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Publication numberCN101675593 B
Publication typeGrant
Application numberCN 200880014472
PCT numberPCT/US2008/062384
Publication date2 Jul 2014
Filing date2 May 2008
Priority date2 May 2007
Also published asCN101675577A, CN101675593A, CN101720526A, CN101720526B, CN101730972A, CN101743683A, CN101743683B, DE602008004510D1, EP2151042A1, EP2151061A1, EP2151061B1, EP2153511A1, EP2153511B1, EP2153512A2, EP2153513A1, US7554473, US7719246, US7719248, US7746043, US7821237, US7863828, US7888922, US7894216, US7969125, US8040703, US8120341, US8125805, US20080272744, US20080272745, US20080272746, US20080272747, US20080272748, US20080272755, US20080272756, US20080272757, US20080272758, US20080272945, US20080273356, US20110103111, US20120194143, WO2008137315A1, WO2008137652A1, WO2008137654A1, WO2008137655A1, WO2008137656A2, WO2008137656A3, WO2008137679A1, WO2008137684A1
Publication number200880014472.5, CN 101675593 B, CN 101675593B, CN 200880014472, CN-B-101675593, CN101675593 B, CN101675593B, CN200880014472, CN200880014472.5, PCT/2008/62384, PCT/US/2008/062384, PCT/US/2008/62384, PCT/US/8/062384, PCT/US/8/62384, PCT/US2008/062384, PCT/US2008/62384, PCT/US2008062384, PCT/US200862384, PCT/US8/062384, PCT/US8/62384, PCT/US8062384, PCT/US862384
Inventors约翰·L·梅兰松
Applicant塞瑞斯逻辑公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
Control system using a nonlinear delta-sigma modulator with nonlinear process modeling
CN 101675593 B
Abstract  translated from Chinese
控制系统包括一个非线性Δ∑调节器,而此非线性Δ∑调节器包括一个非线性过程模型,用于模拟诸如非线性设备等信号处理系统中的非线性过程。 The control system includes a nonlinear ΔΣ regulator, and this non-linear ΔΣ regulator includes a non-linear process model to simulate the nonlinear device such as a signal processing system and other nonlinear processes. 该非线性Δ∑调节器包括一个反馈模型,用于模拟受控的非线性过程,并且便于进行频谱整形,将噪声移出非线性过程响应信号的频谱范围内的基本频带。 The nonlinear ΔΣ regulator includes a feedback model for simulating the controlled nonlinear process, and facilitate the spectral shaping of the noise out of the nonlinear process in response to the basic band spectrum signal. 在至少一个实施例中,该非线性Δ∑调节器属于控制系统的一部分,该控制系统控制开关功率转换器的功率因数校正和输出电压。 In at least one embodiment, a portion of the non-linear ΔΣ regulator control device belonging to the system, the control system controls the switching power converter power factor correction and output voltage. 该控制系统对控制功率因数校正和输出电压水平的控制信号的脉冲宽度和周期进行控制。 The control system of the pulse width and cycle control power factor correction and output voltage level of the control signal is controlled. 在至少一个实施例中,该该非线性Δ∑调节器产生一个信号,对该控制信号的脉冲宽度进行控制。 In at least one embodiment, the non-linear ΔΣ regulator which generates a signal, the control signal to control the pulse width.
Claims(24)  translated from Chinese
1.一种信号处理系统,它包含: 一个非线性Λ Σ调节器,其中: 该非线性Λ Σ调节器包括: 一个环路滤波器; 一个与环路滤波器耦合的量化器;以及一个在环路滤波器和量化器之间耦合的反馈通道,其中反馈通道包括一个非线性反馈模型,该模型模拟一个功率因数校正电路的非线性过程的非线性。 A signal processing system, comprising: a nonlinear Λ Σ adjuster, wherein: the non-linear Λ Σ regulator comprises: a loop filter; a quantizer coupled to the loop filter; and an coupling between the loop filter and quantify the feedback path, wherein the feedback path includes a nonlinear feedback model, nonlinear model nonlinear process that simulates a power factor correction circuit.
2.如权利要求1所述的信号处理系统,其中非线性△ Σ调节器在非线性△ Σ调节器的前馈通道中包括一个补偿模块,用来补偿非线性反馈模型的非线性。 2. The signal processing system of claim 1, wherein the non-linear △ Σ regulator includes a compensation module nonlinear △ Σ regulator feedforward path for nonlinear compensation nonlinear feedback model.
3.如权利要求2所述的信号处理系统,其中的补偿模块包括一个与量化器耦合的逆模型,在其中该逆模型模拟非线性反馈模型的逆函数。 3. The signal processing system according to claim 2, wherein the compensation module comprises an inverse quantizer coupled to a model in which the inverse function of the inverse model to simulate the nonlinear feedback model.
4.如权利要求3所述的信号处理系统,其中非线性反馈模型模拟平方函数,而逆模型模拟平方根函数。 The signal processing system according to claim 4., wherein the non-linear function of the square of the feedback model simulation, simulation models and the inverse square root function.
5.如权利要求2所述的信号处理系统,其中补偿模块包含一个或多个量化器元件,用于按照非线性反馈模型的逆函数近似值来确定量化器的输出。 5. A signal processing system according to claim 2, wherein the compensation module comprises one or more elements quantizer for inverse function approximation according Nonlinear feedback model to determine the output of the quantizer.
6.如权利要求1所述的信号处理系统,其中功率因数校正电路的非线性过程包含一个来自时变电压源经过该功率因数校正电路的电感器的能量传递过程。 6. A signal processing system according to claim 1, wherein the power factor correction circuit comprising a non-linear process variable voltage power source via the inductor of the power factor correction circuit of a transfer process from the time.
7.如权利要求6所述的信号处理系统,在运行时,其中非线性△ Σ调节器的量化器产生一个输出信号,该输出信号与控制功率因数校正电路中功率因数调节开关的控制信号的脉冲宽度相关,所述信号处理系统还包括一个功率因数校正控制电路,其中的功率因数校正控制电路包含: 一个以时间离散方式产生时变输入信号的估算值的信号估算器; 一个与信号估算器耦合的初始△ Σ调节器,处理时变输入信号的估算值并产生与控制功率因数调节开关的控制信号的周期相关的输出;以及一个与非线性△ Σ调节器和初始△ Σ调节器耦合的脉冲宽度调节器,产生控制功率因数调节开关的控制信号,其中控制信号的脉冲宽度由非线性△ Σ调节器量化器的输出信号确定,而周期由开关周期信号发生器确定。 7. The signal processing system according to claim 6, in operation, where the nonlinear quantization △ Σ regulator generates an output signal, the output signal and control power factor correction circuit, power factor adjustment of the control signal switch Related pulse width, said signal processing system further comprises a power factor correction control circuit, wherein the power factor correction control circuit comprises: when a time-varying input signal to produce discrete manner estimator estimates signal; a signal estimator Coupled initial △ Σ regulator, when dealing with estimates varying input signal and generates a control signal for controlling the power factor adjustment switching cycles associated output; and coupled to a nonlinear △ Σ regulator and the regulator's initial △ Σ Pulse width modulator generates a control signal to control the power factor adjustment switch, wherein the pulse width of the control signal by the nonlinear △ Σ regulator output signal of the quantizer is determined, and the cycle period is determined by the switching signal generator.
8.一种使用非线性△ Σ调节器处理信号的方法,用于模拟一个非线性系统过程的非线性,该方法包含: 产生一个量化器输出信号; 在非线性△ Σ调节器的反馈回路中的量化器输出信号加上一个非线性函数,以产生一个反馈信号,其中非线性函数模拟该非线性过程的非线性;并且将反馈信号与非线性△ Σ调节器的输入信号结合起来,以产生一个差值信号。 A nonlinear △ Σ regulator signal processing method for simulating a nonlinear system of non-linear process, the method comprising: generating a quantized output signal; nonlinear △ Σ regulator feedback loop The quantizer output signal plus a non-linear function to generate a feedback signal, wherein the non-linear function for the simulation of nonlinear nonlinear process; and a feedback signal and nonlinear △ Σ regulator input signal combined to produce a difference signal.
9.如权利要求8所述的方法,它还包含: 过滤差值信号;以及补偿非线性△ Σ调节器的反馈回路中的非线性函数的应用。 9. A method as claimed in claim 8, further comprising: filtering the difference signal; and compensating nonlinear △ Σ nonlinear function regulator feedback loop.
10.如权利要求9所述的方法,其中过滤差值信号产生一个过滤后的差值信号,而补偿非线性Λ Σ调节器的反馈回路中的非线性函数的应用包括量化过滤后的差值信号,按照非线性函数的逆函数近似值确定一个量化器输出。 10. The method of claim 9, wherein the filtered difference signal to generate a filtered difference signal, and compensating for nonlinearity Λ Σ regulator feedback loop comprises a nonlinear function of the difference between the quantized filtered signal, according to an inverse function of the nonlinear function approximation to determine a quantitative output.
11.如权利要求10所述的方法,其中非线性函数的逆函数近似值包括该非线性函数的导数。 11. The method of claim 10, wherein the approximation of the inverse function of the nonlinear function comprises the derivative of the nonlinear function.
12.如权利要求9所述的方法,其中过滤差值信号产生一个过滤后的差值信号,而补偿非线性△ Σ调节器的反馈回路中的非线性函数的应用包括: 将非线性函数的逆函数应用到过滤后的差值信号上。 12. The method of claim 9, wherein the filtered difference signal to generate a filtered difference signal, compensating nonlinear △ Σ regulator feedback loop application of the nonlinear function comprises: nonlinear function inverse function is applied to the difference signal filtered.
13.如权利要求12所述的方法,其中非线性函数包含一个平方函数。 13. The method of claim 12, wherein the nonlinear function comprises a square function.
14.如权利要求8所述的方法,其中反馈信号与非线性△ Σ调节器的输入信号的结合包括从非线性Λ Σ调节器输入信号减去反馈信号。 14. The method of claim 8, wherein the combined input signal Σ and nonlinear feedback signal △ regulator input signal comprises subtracting the feedback signal from the nonlinear Λ Σ adjusted.
15.如权利要求8所述的方法,它还包含: 将非线性△ Σ调节器的输出信号转换为时间信号,以确定控制信号的脉冲宽度; 产生一个时间离散方式的时变输入信号估算值; 确定开关频率信号,其中开关频率信号对应于信号发生器处理后的估算值; 产生一个脉冲宽度调制过的开关控制信号,用于按照时间信号控制该开关控制信号的脉冲宽度,并按照开关频率信号控制该开关控制信号的频率;并且将该开关控制信号应用到开关功率转换器的开关上,用于控制从该开关功率转换器的电感器进出的能量传递。 15. The method as claimed in claim 8, further comprising: a nonlinear △ Σ regulator converts the output signal of the time signal to determine the pulse width of the control signal; generating a time discrete manner when varying the input signal estimate ; determining a switching frequency signal, wherein the switching frequency of the signal corresponding to the estimate of the signal processing in the generator; generating a pulse width modulated switch control signal for controlling the pulse width in accordance with the time signal of the switching control signal, and in accordance with the switching frequency The switch control signal controls the frequency of the signal; and the switch control signal is applied to the switching power converter switch for control passes from the switching power converter inductor and out of energy.
16.一个向非线性设备提供控制信号的控制系统,其中该非线性设备产生一个与控制信号对应的响应信号,该控制系统包括: 一个非线性Λ Σ调节器,其中: 该非线性Λ Σ调节器包括: 一个环路滤波器; 一个与环路滤波器耦合的量化器;以及一个在环路滤波器和量化器之间耦合的反馈通道,其中反馈通道包括一个非线性反馈模型,该模型模拟非线性设备的非线性设备过程的非线性;以及在运行时,其中的非线性△ Σ调节器产生一个量化器输出信号,至少控制该控制信号的一个信号方式,而非线性△ Σ调节器在响应信号的频谱范围内进行噪声整形。 16. A control system provides control signals to the nonlinear device, wherein the non-linear device generates a control signal corresponding to the response signal, the control system comprising: a non-linear Λ Σ regulator, wherein: the non-linear Λ Σ adjustment comprising: a loop filter; a loop filter coupled to the quantizer; and a feedback path between the loop filter and a quantizer coupled, wherein the feedback channel comprises a nonlinear feedback model that simulate Nonlinear nonlinear device nonlinear process equipment; and at runtime, which is non-linear △ Σ regulator producing a quantized output signal, at least one control signal mode of the control signal, rather than a linear regulator △ Σ response within the spectrum signal noise shaping.
17.如权利要求16所述的信号处理系统,其中的非线性设备包括一个具有功率因数校正电路的开关功率转换器,以及一个模拟该功率因数校正电路的非线性的非线性反馈模型。 17. The signal processing system of claim 16, wherein the non-linear device comprises a switching power converter having power factor correction circuit, and a simulation of nonlinear model nonlinear feedback to the power factor correction circuit.
18.如权利要求17所述的信号处理系统,其中的非线性反馈模型表示一个平方函数。 18. The signal processing system of claim 17, wherein the nonlinear feedback model represents a square function.
19.如权利要求16所述的信号处理系统,其中非线性设备过程控制信号的至少一个信号方式包括非线性设备过程控制信号的脉冲宽度。 19. The signal processing system of claim 16, wherein the non-linear process control device at least one signal signaling device comprising a nonlinear process control signal pulse width.
20.如权利要求16所述的信号处理系统,在运行时其中的非线性△ Σ调节器将噪声移出响应信号的基本频带。 20. The signal processing system of claim 16, wherein the non-linear operation △ Σ regulator out of the base band noise response signal.
21.如权利要求16所述的信号处理系统,其中非线性△ Σ调节器在非线性△ Σ调节器的前馈通道中包括一个补偿模块,用来补偿非线性反馈模型的非线性。 21. The signal processing system of claim 16, wherein the non-linear △ Σ regulator includes a compensation module nonlinear △ Σ regulator feedforward path for nonlinear compensation nonlinear feedback model.
22.—种控制非线性过程的方法,其中非线性过程产生一个输出信号,与控制系统产生的控制信号对应,该方法包括: 接收一个输入信号;使用非线性△ Σ调节器对输入信号进行频谱整形,将噪声移出非线性过程输出信号的基本频带; 产生一个非线性△ Σ调节器输出信号,其数值表示输入信号的频谱整形;以及使用非线性△ Σ调节器输出信号来产生控制信号。 22.- method of controlling the nonlinear process, wherein the control signal corresponding to the non-linear process generates an output signal generated by the control system, the method comprising: receiving an input signal; nonlinear △ Σ regulator input signal spectrum shaping, the non-linear noise removal process output base band signal; generating a nonlinear △ Σ regulator output signal, which value represents the spectral shaping input signal; and the use of non-linear △ Σ regulator output signal to generate a control signal.
23.如权利要求22所述的方法,其中使用非线性△ Σ调节器对输入信号进行频谱整形,将噪声移出非线性过程输出信号的基本频带还包含: 将非线性函数应用到刚刚产生的非线性△ Σ调节器的量化器输出信号上,以产生一个量化器反馈信号; 确定一个代表输入信号和量化器反馈信号之差的差值信号; 过滤该差值信号,产生一个过滤后的差值信号;以及使用补偿函数处理该过滤后的信号,对非线性函数进行补偿。 23. The method of claim 22, wherein the non-linear regulator △ Σ spectral shaping of the input signal, the noise removal process of non-linear output base band signals further comprising: non-linear function is applied to the non just generated the quantizer output signal △ Σ linear regulator, to produce a quantizer feedback signal; determining an input signal representative of the difference between the feedback signal and the quantizer difference signals; filtering the difference signal to produce a filtered difference signal; and a signal processing using the filter function after compensation, the compensation of the nonlinear function.
24.如权利要求22所述的方法,还包含: 将控制信号应用到一个开关功率转换器的开关上,用于控制从该开关功率转换器的电感器进出的能量传递。 24. The method of claim 22, further comprising: a control signal applied to a switching power converter switch, for controlling the transfer from the switching power converter inductor and out of energy.
Description  translated from Chinese

使用带非线性过程模型的非线性ΛΣ调节器的控制系统 Use with nonlinear process models ΛΣ regulator nonlinear control systems

[0001] 优先权要求和相关专利申请 [0001] The priority claim and related patent applications

[0002] 本专利申请要求依据35 USC§ 119 (e)和37 CFR§ 1.78享有2007年5月2日递交名为“功率因数校正(PFC)控制器装置和方法”的60/915,547号美国临时专利申请的权益,其通过引用被整体纳入本专利申请。 [0002] This patent application claims based on 35 USC§ 119 (e) and 37 CFR§ 1.78 enjoys 60 May 2, 2007 filed called "power factor correction (PFC) controller means and methods" of / 915,547 the benefit of U.S. Provisional Patent Application, which is integrally incorporated by reference in the present patent application.

技术领域 Technical Field

[0003] 一般来说,本发明涉及信号处理领域,更具体地讲,本发明涉及使用非线性Λ Σ调节器的控制系统,该系统利用非线性反馈模型模拟非线性过程。 [0003] Generally, the present invention relates to the field of signal processing, and more particularly, the present invention relates to the use of non-linear Λ Σ regulator control system that nonlinear feedback model to simulate nonlinear process.

背景技术 Background

[0004] 许多电子系统使用非线性过程产生输出信号。 [0004] Many electronic systems use nonlinear processes produce an output signal. 例如,伺服控制系统和功率转换系统等设备系统经常使用非线性过程。 For example, the servo control system and power conversion systems and other equipment systems often use non-linear process. 功率转换系统通常使用开关功率转换器将交流(AC)电压转换为直流(DC)电压或进行DC至DC转换。 Switching power conversion systems typically use an AC power converter (AC) voltage into a direct current (DC) voltage or DC to DC converter. 开关功率转换器通常包括一个非线性能量传递过程,向负载提供经过功率因数校正的能量。 Switching power converter typically includes a non-linear energy transfer to a load of energy through power factor correction.

[0005] 图1所不为一台设备和控制系统100,它包括有一个开关功率转换器102和一台设备104。 [0005] FIG. 1 is not a device and a control system 100, which includes a switching power converter 102 and a device 104. 例如,设备104是一个伺服控制系统或一个供电系统。 For example, the device 104 is a servo control system or a power supply system. 开关功率转换器102向负载112提供恒压电源。 The switching power converter 102 to provide constant power to the load 112. 开关功率转换器102按照非线性过程在断续电流模式下工作。 Switching power converter 102 according to the non-linear processes work in discontinuous current mode. 一个全二极管桥式整流器103对交流电源101提供的交流电压Vin(t)进行整流,产生经过整流的时变输入电压Vx (t)。 A full-bridge diode rectifier 103 pairs of AC power source 101 provides an AC voltage Vin (t) is rectified through the rectifier to produce varying input voltage Vx (t). 开关功率转换器102的开关108调节经整流的时变输入电压Vx (t)通过电感器110到电容器106的能量传递。 When the switch 102 of the switching power converter 108 adjust the rectified input voltage becomes Vx (t) through an inductor 110 to the capacitor 106 of the energy transfer. 峰值输入电流iin与开关108的'接通时间'成正比,而传递的能量与'接通时间'的平方成正比。 Peak input current iin and the switch 108 'on-time' is proportional to the energy transfer is proportional to the square of the 'on-time' of. 因此,能量传递过程是非线性过程的一个实施例。 Therefore, the energy transfer process is a nonlinear process embodiment. 在至少一个实施例中,控制信号Cs是一个脉冲宽度调制信号,而开关108是一个η-通道场效应晶体管,当Cs的脉冲宽度处于高电平时导通。 In at least one embodiment, the control signal Cs is a pulse width modulated signal, the switch 108 is a field effect transistor channel η-, Cs when the pulse width is turned at a high level. 此外,开关108的'接通时间'是由控制信号Cs的脉冲宽度决定的。 Further, the switch 108 'on-time' is the pulse width of the control signal Cs decision. 因此,传递的能量与控制信号Cs的脉冲宽度的平方成正比。 Thus, the energy transfer is proportional to the square of the control signal Cs of the pulse width. 二极管111防止反向电流流进电感器110。 Diode 111 prevents reverse current flowing into the inductor 110. 从电感器110传递来的能量储存在电容器106中。 Stored in the capacitor 106 from 110 the inductor to the energy transfer. 向负载112提供电流时,电容器106的电容足以保持大致恒定的电压Vc。 112 provides current to the load, the capacitance of capacitor 106 is sufficient to maintain a substantially constant voltage Vc. 在至少一个实施例中,开关功率转换器102是一种升压型转换器,即电压V。 In at least one embodiment, the switching power converter 102 is a boost converter, the voltage V. 比峰值输入电压Vx (t)大。 (T) is greater than the peak input voltage Vx.

[0006] 设备和控制系统100还包括一个开关状态控制器114。 [0006] The device and control system 100 also includes a switch state controller 114. 开关状态控制器114产生控制信号Cs,其目的是使用开关功率转换器102将所需的能量传递到电容器106,进而传递到负载112上。 State controller 114 generates the switch control signal Cs, the aim is to use the switching power converter 102 to the desired energy transfer to the capacitor 106, and then transmitted to the load 112. 所需的能量取决于负载112的电压和电流要求。 The energy required depends on the load voltage and current requirements 112. 为了使功率因数校正接近I,开关状态控制器114设法控制输入电流iin,使输入电流iin能够追踪到输入电压Vx (t)的变化,而同时保持电容器电压V。 In order to make the power factor correction proximity I, trying to switch state controller 114 controlling the input current iin, input current iin can be traced to the input voltage Vx (t) changes, while maintaining the capacitor voltage V. 的恒定。 Constant.

[0007] 能量从电感器110传递到电容器106的过程即为一个非线性过程。 [0007] the energy transfer to the process of the inductor 110 from the capacitor 106 is a non-linear process. 峰值输入电流iin与控制信号Cs (即开关108的'接通'(导通)时间)的脉冲宽度成正比,而传递到电容器106的能量与控制信号Cs的脉冲宽度的平方成正比,与控制信号Cs的周期成反比。 Peak input current iin and the control signal Cs (i.e., switch 108 is 'ON' (conduction) time) of the pulse width is proportional to the square of the energy delivered to the control signal Cs of the capacitor 106 of pulse widths, and control Cs is inversely proportional to the period of the signal. 因此能量在电感器110和电容器106之间的传递过程本来就是非线性的。 So the energy transfer process between the inductor 110 and the capacitor 106 has always been linear. 由于开关功率转换器102的能量传递过程是非线性的,产生保持功率校正、效率和稳定输出功率的控制信号Cs自然就更为困难。 Since the switching power converter 102 energy transfer process is non-linear, the correction power generation to maintain efficiency and stable output power control signal Cs naturally more difficult.

发明内容 DISCLOSURE

[0008] 在本发明的一个实施例中,信号处理系统包括一个非线性Λ Σ调节器。 [0008] In one embodiment of the present invention, the signal processing system comprises a non-linear Λ Σ regulator. 该非线性Δ Σ调节器包括一个环路滤波器、一个与环路滤波器耦合的量化器以及一个在环路滤波器和量化器之间耦合的反馈通道,其中反馈通道包括一个非线性反馈模型,该模型模拟了功率因数校正电路非线性过程的非线性。 The nonlinear Δ Σ regulator comprises a loop filter, a loop filter coupled to the quantizer and a feedback path between the loop filter and a quantizer coupled, wherein the feedback path includes a nonlinear feedback model The model simulates the nonlinear power factor correction circuit nonlinear process.

[0009] 在本发明的另一个实施例中,一种信号处理方法使用了非线性Λ Σ调节器来模拟非线性系统过程的非线性,该方法包括量化器输出信号的生成。 [0009] In another embodiment of the present invention, a signal processing method using a non-linear Λ Σ regulator to simulate nonlinear systems of nonlinear process, the method includes generating a quantized output signal. 该方法还包括将非线性函数应用到非线性△ Σ调节器反馈回路中的量化器输出信号,以产生反馈信号,其中非线性函数模拟非线性过程的非线性,并将反馈信号与非线性△ Σ调节器的输入信号结合起来,产生一个差值信号。 The method also includes the non-linear function is applied to the nonlinear △ Σ regulator feedback loop quantizer output signal to generate a feedback signal, wherein the non-linear function for the simulation of nonlinear nonlinear process, and the feedback signal and nonlinear △ Σ regulator combined input signal to produce a difference signal.

[0010] 在本发明的另一个实施例中,一个包括非线性Λ Σ调节器的控制系统向非线性设备提供控制信号,而非线性设备在其中产生一个响应信号,对此控制信号进行响应。 [0010] In another embodiment of the present invention, includes non-linear Λ Σ regulator control system provides control signals to the non-linear devices, and non-linear device which generates a response signal, which control signal in response. 该非线性△ Σ调节器包括一个环路滤波器、一个与环路滤波器耦合的量化器以及一个在环路滤波器和量化器之间耦合的反馈通道,其中反馈通道包括一个非线性反馈模型,该模型模拟非线性设备的非线性设备过程的非线性。 The nonlinear △ Σ regulator comprises a loop filter, a loop filter coupled to the quantizer and a feedback path between the loop filter and a quantizer coupled, wherein the feedback path includes a nonlinear feedback model The model simulates the nonlinear device nonlinear nonlinear device process. 在运行时,该非线性△ Σ调节器产生一个量化器输出信号,至少控制该控制信号的一个信号方式,而且非线性△ Σ调节器在响应信号的频谱范围进行噪声整形。 At run time, the non-linear △ Σ regulator producing a quantized output signal, a signal of the mode control signal is at least controlled, and the nonlinear △ Σ regulator signal in response to the spectral range of noise shaping.

[0011] 在本发明的另一个实施例中,一种控制非线性过程的方法包括输入信号的接收,在该控制方法中,非线性过程产生一个响应控制系统所产生的控制信号的输出信号。 [0011] In another embodiment of the present invention, a method for controlling non-linear process, including input received signal, the control method, the nonlinear process generates an output signal in response to control signals generated by the control system. 该方法还包括通过非线性△ Σ调节器对输入信号进行频谱整形,将噪声移出非线性过程输出信号的基本频带,并且产生一个非线性△ Σ调节器输出信号,其数值表示输入信号的频谱整形。 The method further comprises a non-linear △ Σ regulator input signal spectral shaping the noise out of the base band nonlinear process output signal and produces a non-linear △ Σ regulator output signal, which value represents the spectral shaping input signal . 该方法还包括使用非线性Λ Σ调节器输出信号来产生控制信号。 The method also includes the use of non-linear Λ Σ regulator output signal to generate a control signal.

附图说明 Brief Description

[0012] 参考附图可以更好地理解本发明,还可以使熟悉该技术领域者明白本发明的各种目的、特征和优点。 [0012] may be better understood with reference to the accompanying drawings of the present invention also allows those who are familiar with the art to understand the invention for various purposes, features and advantages. 在这些附图中使用相同参考号代表相同或相似要素。 Using the same reference numerals represent the same or similar elements in the drawings.

[0013] 图1 (标为先前技术)所示为一个带有功率因数校正级的开关功率转换器。 [0013] Figure 1 (labeled prior art) shows a power factor correction stage with the switching power converter.

[0014] 图2所示为一个带有非线性Λ Σ调节器的非线性系统。 [0014] Figure 2 shows a regulator with nonlinear Λ Σ nonlinear systems.

[0015] 图3所示为一个非线性Λ Σ调节器。 [0015] FIG. 3 is a non-linear Λ Σ regulator.

[0016] 图4所示为一台设备和控制系统。 [0016] Figure 4 shows a device and a control system.

[0017] 图5所示为一个开关状态控制器。 [0017] Figure 5 shows a switching state controller.

[0018] 图6所示为一个带有平方非线性系统反馈模型的非线性Λ Σ调节器。 [0018] FIG. 6 is a non-linear system with a quadratic nonlinear Λ feedback model Σ regulator.

[0019] 图7所示为一个模拟非线性Λ Σ调节器的程序。 [0019] Figure 7 shows an analog nonlinear Λ Σ regulator program.

[0020] 图8所示为开关状态控制器输入信号随时间变化的曲线图。 [0020] Figure 8 shows the switching state controller input signal versus time graph.

[0021] 图9所示为非线性Λ Σ调节器输出信号随时间变化的曲线图。 [0021] FIG. 9 is a non-linear Λ Σ regulator output signal versus time curve. [0022] 图10所示为设备能量传递随时间变化的曲线。 [0022] Figure 10 shows the transfer curve of the time-varying energy device.

具体实施方式 DETAILED DESCRIPTION

[0023] 控制系统包括一个非线性Λ Σ调节器,而此非线性Λ Σ调节器包括一个非线性过程模型,用于模拟诸如非线性设备等信号处理系统中的非线性过程。 [0023] The control system includes a non-linear Λ Σ regulator, and this nonlinearity Λ Σ regulator comprises a non-linear process model to simulate the nonlinear process equipment, such as non-linear signal processing system. 该非线性△ Σ调节器产生一个或多个信号,例如可用于控制非线性过程。 The nonlinear △ Σ regulator generates one or more signals, for example, can be used to control the nonlinear process. 常规的△ Σ调节器对△ Σ调节器的输出进行频谱整形,将噪声移出△ Σ调节器输出信号的基本频带,而不是在非线性过程响应信号的频谱范围进行噪声频谱整形。 Conventional △ Σ △ Σ regulator to regulate the output spectrum shaping the noise out of the △ Σ regulator output signal of base band, rather than in the non-linear process response spectrum signal noise spectral shaping. 在至少一个实施例中,该非线性Λ Σ调节器包括一个反馈模型,用于模拟受控的非线性过程,并且便于进行频谱整形,将噪声移出非线性过程响应信号的频谱范围中的基本频带。 In at least one embodiment, the non-linear Λ Σ regulator comprises a feedback model for simulating the controlled non-linear process, and facilitate spectral shaping, nonlinear process in response to the noise removal spectrum in the base band signal . [0024] 在至少一个实施例中,该非线性△ Σ调节器属于控制开关功率转换器功率因数校正和输出电压的控制系统的一部分。 [0024] In at least one embodiment, the non-linear portion is below △ Σ regulator control switching power converter power factor correction and output voltage control system. 在至少一个实施例中,该开关功率转换器包括一个调节能量从功率因数校正级传递到负载以及调节开关功率转换器输出电压的开关。 In at least one embodiment, the switching power converter comprises a regulating energy transfer from the power factor correction stage to the load and adjusting the output voltage switching power converter switch. 该开关的导通性受到一个由控制系统产生的脉冲宽度调制控制信号的控制,该控制系统包括一个非线性△ Σ调节器。 Continuity of the switch is controlled by a control system produced pulse width modulation control signal, the control system includes a nonlinear △ Σ regulator. 该控制系统对控制功率因数校正和输出电压水平的控制信号的脉冲宽度和周期进行控制。 The control system of the pulse width and cycle control power factor correction and output voltage level of the control signal is controlled. 在至少一个实施例中,该非线性△ Σ调节器产生一个信号以对控制信号的脉冲宽度进行控制,而另一个子系统产生一个信号对控制信号的周期进行控制。 In at least one embodiment, the non-linear △ Σ regulator generates a control signal to control the pulse width of the signal, and the other subsystem generates a signal for controlling the cycle of the control signal.

[0025] 图2所示为一台设备和控制系统200。 [0025] Figure 2 shows a device and a control system 200. 该设备和控制系统200包括控制系统202和设备206。 The equipment and the control system 200 includes a control system 202 and device 206. 控制系统202产生一个控制信号Cs控制设备206的非线性过程204。 Nonlinear process control system 202 generates a control signal Cs control device 206 204. 为了响应控制信号Cs,该非线性过程204产生一个响应信号Rs。 In response to a control signal Cs, the non-linear process 204 generates a response signal Rs. 在至少一个实施例中,该非线性过程204是一个平方函数。 In at least one embodiment, the non-linear process 204 is a square function. 例如,在至少一个实施例中,设备206是一个功率转换器,而非线性过程204代表从输入级到负载210的一个能量传递过程。 For example, in at least one embodiment, device 206 is a power converter, and 204 denotes a nonlinear process to the load from the input stage 210 of an energy transfer process. 负载212可以是任何负载,且包括另一个功率传递级。 Load 212 may be any load, and further comprising power transfer level. 控制系统202包括一个非线性Λ Σ调节器208,而该非线性Λ Σ调节器208包括一个非线性模型210对非线性过程204的非线性进行模拟。 Control system 202 includes a non-linear Λ Σ regulator 208, and the non-linear Λ Σ regulator 208 includes a non-linear model the nonlinear process 204 210 pairs of non-linear simulation. 如下文详述,控制系统202使用非线性Λ Σ调节器208产生控制信号Cs。 As detailed below, the control system 202 uses a nonlinear Λ Σ regulator 208 generates a control signal Cs.

[0026] 在至少一个实施例中,控制系统202产生控制信号Cs,使响应信号Rs的频谱进行噪声整形,即噪声从响应信号Rs的基本频带移出并进入带外频谱。 [0026] In at least one embodiment, the control system 202 generates control signals Cs, so that the response signal Rs noise spectral shaping, i.e. noise is removed from the spectrum and into the band of the base band response signal Rs. 许多设备具有固有的低通频率响应。 Many devices have inherently low-pass frequency response. 因此,噪声整形去除低频噪声并防止噪声转为控制信号Cs的一部分。 Therefore, noise shaping to remove a portion of the low frequency noise and prevent noise into the control signal Cs. 将噪声移出响应信号Rs的基本频带可从响应信号Rs消除不必要的信号,该信号可以对负载212的运行产生不良影响和/或寄生耦合到设备206的其它电路中。 The response signal Rs of the noise out of the base band signal to eliminate unwanted response signal Rs, the load signal can adversely affect the operation of 212 and / or parasitic coupling to other circuits in the device 206. 非线性过程模型210通过模拟非线性过程204,有利于响应信号Rs的噪声整形。 Nonlinear process model simulation of nonlinear processes 204 through 210, in favor of the response signal Rs noise shaping.

[0027] 图3所示为非线性Λ Σ调节器300,是非线性Λ Σ调节器208的一个实施例。 [0027] Figure 3 is a non-linear Λ Σ regulator 300, the regulator 208 nonlinearity Λ Σ an embodiment. 非线性λ Σ调节器300在非线性Λ Σ调节器300的反馈通道304中包括一个'非线性系统'反馈模型302。 Nonlinear λ Σ regulator 300 in the non-linear Λ Σ regulator feedback channel 304 300 includes a 'non-linear systems' feedback model 302. 反馈模型302模拟非线性过程204的非线性。 Feedback nonlinear process simulation model 302 204 nonlinearity. 在至少一个实施例中,反馈模型302用f(x)表示。 In at least one embodiment, the feedback model 302 is represented by f (x). 非线性Λ Σ调节器输出信号y(n)经过延时306反馈,而反馈模型302按照f (y(nl))处理延时的量化器输出信号y(n_l)。 Nonlinear Λ Σ regulator output signal y (n) through the feedback delay 306, and 302 in accordance with the feedback model f (y (nl)) processing delay quantizer output signal y (n_l). 并合器308确定代表反馈模型302输出f(y(nl))和输入信号χ (η)之差的信号差d (n)。 And close 308 to determine the representative feedback model 302 output f (y (nl)) and the input signal χ (η) the difference between the signal difference d (n). kth谐波环路滤波器310滤去信号差d (η),产生环路滤波器输出信号u (η),其中k是大于等于I的整数,而k的数值是一个设计选择。 loop filter 310 kth harmonic filtered difference signal d (η), the loop filter produces an output signal u (η), where k is an integer of I or greater, and the value of k is a design choice. 一般来说,增大k的数值会减小基本频带的噪声并增大带外噪声。 In general, increasing the value of k will reduce noise and increase the basic band-band noise. [0028] 非线性Λ Σ调节器300包括非线性补偿模块312。 [0028] The non-linear Λ Σ regulator 300 includes a non-linear compensation module 312. 然而,在至少一个实施例中,非线性补偿模块不作为非线性△ Σ调节器300的一部分。 However, in at least one embodiment, the non-linear compensation module is not part of the nonlinear △ Σ regulator 300. 非线性补偿模块312补偿由非线性反馈模型302引入的非线性。 Nonlinear compensation module 312 to compensate the nonlinear feedback model 302 introduced nonlinear. 在至少一个实施例中,非线性补偿模块312使用补偿函数f1 (x)处理环路滤波器输出信号u (η),该函数是反馈模型302函数f(x)的逆函数,例如,如果f(x) =X2^Ijr1(X) = X1720量化器314量化补偿模块312的输出,以确定非线性Λ Σ调节器300的输出信号y(n)。 In at least one embodiment, the non-linear compensation module 312 using the compensation function f1 (x) Treatment of the loop filter output signal u (η), the function model 302 is a feedback function f (x) inverse function, for example, if f (x) = X2 ^ Ijr1 (X) = X1720 quantizer 314 outputs the quantized compensation module 312 to determine the nonlinear Λ Σ regulator output signal y (n) 300 of. 在至少一个实施例中,补偿模块312的补偿函数F1(X)是非线性系统反馈模型302的逆函数的估算值。 In at least one embodiment, the compensation module compensation function of F1 312 (X) is an estimate of a nonlinear system feedback model 302 inverse function. 在至少一个实施例中,非线性Λ Σ调节器300的前馈通道311中的补偿函数F1(X)可以为所有频率提供噪声整形。 In at least one embodiment, feedforward nonlinear adjustment path Λ Σ 300 311 compensation function F1 (X) to provide noise shaping for all frequencies. 在至少一个实施例中,一个不完全补偿函数(即近似PU))在所有频率中允许有更多噪声。 In at least one embodiment, an incomplete compensation function (i.e., approximately PU)) allows all frequencies have more noise. 在至少一个实施例中,补偿函数F1(X)为非线性Λ Σ调节器300提供稳定性。 In at least one embodiment, the compensation function F1 (X) is non-linear Λ Σ regulator 300 to provide stability.

[0029] 在至少一个实施例中,非线性补偿模块312纳为量化器314的一部分,而不是作为量化过程之外的独立过程。 [0029] In at least one embodiment, the non-linear compensation module 312 is satisfied that the quantization part 314, rather than as a separate process outside of the quantization process. 补偿模块312使量化器314按照量化补偿函数对环路输出信号u(η)进行量化。 Compensation module 312 314 in accordance with the quantization quantized output signal of the loop compensation function u (η) be quantified. 在至少一个实施例中,量化器补偿函数根据反馈模型302的导数df(x)确定非线性△ Σ调节器的输出信号y(n)。 In at least one embodiment, the quantization unit compensation function to determine the nonlinear △ Σ regulator output signal y (n) according to the feedback model 302 derivative df (x). 例如,如果非线性系统反馈模型302的函数f(x)等于X2,则量化器的补偿函数是2x。 For example, if the nonlinear system model 302 feedback function f (x) is equal to X2, the quantizer compensation function is 2x. 量化器补偿函数可估算为X。 Quantizer compensation function can be estimated as X. 量化器314的决定点则为x+/_V2o Quantizer decision point 314, compared with x + / _ V2o

[0030] 图4表示一台设备和控制系统400,这是设备和控制系统200的一个实施例。 [0030] FIG. 4 shows a device and a control system 400, which is a device and a control system 200 embodiments. 该设备和控制系统400包括一个开关功率转换器402和一台设备404。 The equipment and the control system 400 includes a switching power converter 402 and a device 404. 设备404代表设备206的一个实施例。 Equipment 404 206 on behalf of an embodiment of the device. 开关功率转换器402按照非线性过程在断续电流模式下工作。 Switching power converter 402 according to the non-linear processes operate in discontinuous current mode. 开关功率转换器402的开关408调节经整流的时变输入电压Vx (t)通过电感器410到电容器406的能量传递。 Switching power converter 402 when switch 408 becomes adjusted rectified input voltage Vx (t) through an inductor 410 to the capacitor 406 of the energy transfer. 峰值输入电流iin与开关408的'接通时间'成正比,而传递的能量与'接通时间'的平方成正比。 Peak input current iin and switch 'on-time' is proportional to the 408, and the energy transfer is proportional to the square of 'on-time' of. 在至少一个实施例中,控制信号Csi是一个脉冲宽度调制信号,而开关408是一个η-通道场效应晶体管,当Csi的脉冲宽度处于高电平时导通。 In at least one embodiment, the control signal Csi is a pulse width modulated signal, the switch 408 is a η- channel field effect transistor, when the pulse width Csi turned at a high level. 因此,开关408的'接通时间'是由控制信号Cs i的脉冲宽度决定的。 Thus, the switch 408 'on-time' is controlled by a pulse width signal Cs i decided. 所以,传递的能量与控制信号Csi的脉冲宽度的平方成正比。 Therefore, the energy transfer is proportional to the square of the control signal Csi pulse width. 因此,能量传递过程是一个平方过程,并代表非线性过程205的一个实施例。 Therefore, the energy transfer process is a process of square and represents a non-linear process of Example 205. 二极管412防止反向电流流进电感器410。 Diode 412 prevents reverse current flow into the inductor 410. 从电感器410传递来的能量储存在电容器406中。 Stored in the capacitor 406 from the inductor 410 to the energy transfer. 向负载412提供电流时,电容器406的电容足以保持大致恒定的电压Va。 Current is supplied to the load 412, the capacitance of the capacitor 406 is sufficient to maintain a substantially constant voltage Va. 在至少一个实施例中,开关功率转换器402是一种升压型转换器,即电压Va比峰值输入电压Vx (t)大。 In at least one embodiment, the switching power converter 402 is a boost converter, the voltage Va than the peak input voltage Vx (t) large.

[0031] 设备和控制系统400还包括一个开关状态控制器414,它代表控制系统202的一个实施例。 [0031] and control system 400 also includes a switch state controller 414, which represents an embodiment of a control system 202. 开关状态控制器414对控制信号Csi的脉冲宽度PW和周期T进行控制。 State controller switch 414 control signal Csi pulse width T PW and period control. 因此开关状态控制器414控制着开关功率转换器402的非线性过程,使得所需的能量被传递给电容器406。 Therefore, the state controller 414 controls the switch switching power converter 402 nonlinear process, making the required energy is transferred to the capacitor 406. 所需的能量取决于负载412的电压和电流要求。 The energy required depends on the load voltage and current requirements 412. 控制信号的占空比Csi经过设置,以保持所需的电容器电压Va和负载电压\,而且在至少一个实施例中,控制信号Csi的占空比D等于['/(να+')]。 The duty cycle of the control signal Csi been set to maintain a desired capacitor voltage and the load voltage Va \, and in at least one embodiment, the control signal Csi duty ratio D is equal to ['/ (να +')]. 当输入电压Vx(t)增大时,能量传递在这一时段也增大。 When the input voltage Vx (t) increases, the energy transfer is also increased in this period. 为了调节传递的能量并将功率因数保持在接近1,开关状态控制器414改变控制信号Csi的周期,使得输入电流iin能够追踪到输入电压Vx (t)的变化,并使输出电容器电压Va保持恒定。 In order to adjust the energy and the power factor is maintained close to a pass, the controller 414 changes the switching state of the control signal Csi period, so that the input current iin can be traced to the input voltage Vx (t) changes, and the output capacitor to maintain a constant voltage Va . 因此,当输入电压Vx (t)增大时,开关状态控制器414将增大控制信号Csi的周期T ;而当输入电压Vx(t)减小时,开关状态控制器414将减小控制信号Csi的周期。 Therefore, when the input voltage Vx (t) increases, will increase state control switch 414 control signal Csi cycle T; and when the input voltage Vx (t) decreases, the state controller switch 414 will reduce the control signal Csi cycle. 同时,控制信号Csi的脉冲宽度PW经过调节,以保持恒定的占空比D,并使电容器电压Va保持恒定。 At the same time, the pulse width of the control signal Csi PW regulated to maintain a constant duty ratio D, capacitor voltage Va and kept constant. 在至少一个实施例中,开关状态控制器414以远高于输入电压Vx(t)的频率更新控制信号CS1。 In at least one embodiment, state controller switches 414 much higher than the input voltage Vx (t) of the frequency update control signal CS1. 输入电压Vx⑴的频率一般为50至60Hz。 Vx⑴ input voltage frequency is generally 50 to 60Hz. 例如,控制信号Csi的频率1/T介于25kHz与IOOkHz之间。 For example, the control signal Csi frequency between 25kHz and IOOkHz 1 / T between. 等于或高于25kHz的频率避免了音频干扰,等于或低于IOOkHz的频率避免了有较大影响的开关无效性,同时又能保持良好的功率因数校正,比如0.9和I之间的功率因数校正,且电容器电压Va保持近似的恒定值。 Equal to or higher than the frequency of 25kHz to avoid audio interference, equal to or lower than the frequency of IOOkHz avoid a greater impact of switching invalidity while maintaining good power factor correction, power factor correction such as between 0.9 and I , and the capacitor voltage Va remains approximately constant value.

[0032] 图5所示为开关状态控制器500,它代表开关状态控制器414的一个实施例。 [0032] FIG. 5 shows the switch state controller 500, which represents the state of the switch controller 414 of one embodiment. 开关状态控制器500产生控制信号CS1,以对开关功率转换器402的非线性能量传递过程进行控制。 State controller switch 500 generates control signals CS1, with the switching power converter 402 of nonlinear energy transfer process control. 非线性Δ Σ调节器300接收到输入信号V (η),该输入信号显示控制信号Csi在下一周期所需的能量传递,以保持所需的负载电压非线性Λ Σ调节器300处理该输入信号V (η),并产生量化器输出信号QPW。 Nonlinear Δ Σ adjuster 300 receives input signal V (η), the input signal in the next display control signal Csi energy transfer cycles required to maintain the required load voltage nonlinearity Λ Σ regulator 300 processes the input signal V (η), and generates quantized output signal QPW. 非线性Λ Σ调节器300的非线性反馈模型302(图3)模拟开关功率转换器402的非线性能量传递过程,使得量化器的输出信号Qpw发出的控制信号Csi脉冲宽度与电容器406所需能量传递以保持负载电压'的恒定。 Pulse width control signal Csi capacitor nonlinear Λ Σ regulator nonlinear feedback model 300 302 (FIG. 3) analog switching power converter 402 of nonlinear energy transfer process, so that the quantization of the output signal emitted by 406 Qpw energy needed transfer to maintain the load voltage "constant. 输入信号v(n)将结合图4进行更详细的讨论。 Input signal v (n) in conjunction with FIG. 4 is discussed in more detail.

[0033] 在至少一个实施例中,输入信号Vx (t)是整流电压,因此随着时间变化而上升和下降。 [0033] In at least one embodiment, the input signal Vx (t) is the rectified voltage, and therefore changes with the rise and fall time. 开关状态控制器500追踪输入信号Vx(t)的变化并调节控制信号Csi的周期,使之随输入信号Vx(t)的增大而增大,并随输入信号Vx(t)的减小而减小。 500 switch status tracking input signal Vx (t) changes in the controller and adjust the control signal Csi cycle, so that with the input signal Vx (t) increases and decreases with the input signal Vx (t) rather decreases. 为了确定控制信号Csi的每个周期,开关状态控制器500包括一个输入信号估算器502,该估算器估算控制信号Csi在每个周期的输入电压Vx (t)的瞬时值,并产生一个估算的电压值e (η)。 In order to determine the control signal Csi each cycle, the state controller 500 includes an estimate of a switch input signal estimator 502, the estimator estimates the instantaneous value of the control signal Csi each cycle input voltage Vx (t), and the resulting the voltage value e (η). 估算器502的输入信号Vx可以是输入电压Vx(t)的实际值或比例值或者是输入电压Vx(t)的取样值。 Estimating the input signal Vx 502 may be an input voltage Vx (t) or the ratio of the actual value or a value input voltage Vx (t) of sample values. 开关状态控制器500包括一个常规△ Σ调节器504,用于处理估算电压值e(n)并将估算的电压值e(n)转换为量化器输出信号QT。 State controller 500 includes a conventional switching regulator △ Σ 504 for processing a voltage estimate value e (n) and the estimated voltage value e (n) is converted to an output signal of the quantizer QT. 量化器输出信号Qt代表一个控制信号Csi周期,用于输入电压Vx(t)的估算值。 Qt quantizer output signal representative of a control signal Csi period, for an input voltage Vx (t) estimate. 常规Δ Σ调节器的典型设计和运行请参见Schreier和Temes的著作Understanding Delta-Sigma DataConverters (了解Δ Σ 数据转换器),IEEE Press,2005,ISBN 0-471-46585-2ο General Δ Σ regulator typical design and operation, see Schreier and Temes's book Understanding Delta-Sigma DataConverters (Learn Δ Σ data converters), IEEE Press, 2005, ISBN 0-471-46585-2ο

[0034] 开关状态控制器500包括一个脉冲宽度调节器506,该调节器将量化器输出信号Qpw(η)转换为脉冲宽度,并且将量化器输出信号Qt(η)转换为控制信号Csi的周期,其中η可以是表示相关变量的特定实例的数字。 [0034] The state controller switch 500 includes a pulse width modulator 506, the regulator of the quantized output signal Qpw (η) into a pulse width, and the quantized output signal Qt (η) is converted to a control signal Csi cycle where η can be a number representing a particular instance of the relevant variables. 为了进行此转换,在至少一个实施例中,脉冲宽度调节器506包括一个计数器。 To perform this conversion, in at least one embodiment, the pulse width modulator 506 includes a counter. 量化器输出信号QPW(n)显示脉冲控制信号Csi的计数,而量化器输出信号Qt(η)显不控制信号Csi的周期计数。 Quantizer output signal QPW (n) displays pulse control signal Csi counts quantified output signal Qt (η) was not a control signal Csi cycle count. 脉冲宽度调节器506将量化器输出信号Qpw(η)和量化器输出信号Qt(η)的计数转换为控制信号Csi的相应脉冲宽度和周期。 Pulse width modulator 506 quantized output signal Qpw (η) and the quantized output signal Qt (η) of the count to a control signal Csi corresponding pulse width and period. 在至少一个实施例中,开关状态控制器500使用数字技术执行。 In at least one embodiment, state controller 500 switches execution using digital technology. 在其它实施例中,开关状态控制器500可使用模拟或者数字与模拟混合技术执行。 In other embodiments, the state controller switch 500 can use analog or digital and analog mixed technical implementation.

[0035] 对于图3、4和5,当非线性Δ Σ调节器300作为开关状态控制器(如开关状态控制器500(图5))的一部分使用时,为了保持功率因数的校正,输入信号ν(η)与(l_(Vx(t)/Vci).Κ成正比。“Vx(t)”和“VC1 ”如图4所述。“K”是一个常数,表示负载412的功率需求,由一个比例积分补偿器(未显示)决定,该补偿器将负载电压'(图4)与标准电压进行比较,并将输出电压误差的积分和比例函数组合确定为反馈信号。比例积分补偿器的一个例子请参见Alexander Prodi0的著作Compensator Designand Stability Assessment for FastVoltage Loops of Power Factor CorrectionRectif iers (功率因数校正整流器的快速电压环路的补偿器设计与稳定性评价),IEEE Transactions on Power Electronics (IEEE电力电子学汇刊)2007年9月,第22卷,第5册,以及Erickson和Maksomovi0的著作,Fundamentals of Power Electronics (功率电子基础),第2 版,Boston, MA:Kluwer, 2000年。对输入信号v(n)进行限制以确保开关功率转换器402在断续电流模式下运行。 [0035] For the 3, 4 and 5, when the nonlinear Δ Σ regulator 300 as the switch state controller (e.g. switch state controller 500 (FIG. 5)) the use of a part, in order to maintain the power factor correction, the input signal ν (η) and (l_ (Vx (t) / Vci) .Κ proportional. "Vx (t)" and "VC1" as shown in Figure 4. "K" is a constant representing the power requirements of the load 412, is determined by a proportional integral compensator (not shown), which will load voltage compensator '(FIG. 4) is compared with a reference voltage, and outputs a combination of integral and proportional function is determined as a feedback voltage error signal proportional integral compensator See an example of the writings of Alexander Prodi0 Compensator Designand Stability Assessment for FastVoltage Loops of Power Factor CorrectionRectif iers (compensator design and stability evaluation of power factor correction rectifiers fast voltage loop), IEEE Transactions on Power Electronics (IEEE Power Electronics Transactions) in September 2007, Volume 22, Volume 5, and Erickson and Maksomovi0 writings, Fundamentals of Power Electronics (power electronics-based), 2nd edition, Boston, MA:. Kluwer, 2000 on the input signal v (n) restrictions to ensure that the switching power converter 402 runs in discontinuous current mode.

[0036] 图6所示为非线性Λ Σ调节器600,是非线性Λ Σ调节器300的一个实施例。 [0036] Figure 6 is a nonlinear Λ Σ regulator 600, is a non-linear regulator 300 Λ Σ embodiment. 开关功率转换器402的非线性能量传递过程可以模拟成平方函数χ2。 The switching power converter 402 of nonlinear energy transfer process can be modeled as a square function χ2. 非线性△ Σ调节器600包括一个非线性系统反馈模型602,用X2表示。 Nonlinear △ Σ regulator 600 includes a nonlinear system feedback model 602, represented by X2. 因此,反馈模型602的输出是下一循环的量化器输出信号QPW(n)的平方,即[Qpff (n-1) J20非线性Λ Σ调节器600与非线性Λ Σ调节器300 —样,包括一个独立于量化器314的补偿模块604。 Therefore, the output feedback model 602 is quantized output signal QPW next cycle (n) of the square, that [Qpff (n-1) J20 nonlinear Λ Σ regulator 600 and nonlinear Λ Σ regulator 300-- like, It includes a separate compensation module 314 to quantizer 604. 非线性补偿模块604使用平方根函数x1/2处理环路滤波器310的输出信号u (η)。 Nonlinear compensation module 604 a square root function x1 / 2 processing loop filter 310 output signal u (η). 补偿模块604的输出c (η)通过量化器314进行量化,从而产生量化器输出信号QPW(n)。 Compensation module 604 outputs c (η) quantized by the quantizer 314 to produce the quantized output signal QPW (n).

[0037] 图7所示为一个Mathematica®程序,该程序模拟非线性Λ Σ调节器300用于非线性反馈模型302以及非线性补偿模块312的函数f(x) = χ2,该函数作为量化器补偿函数使用,表不x+/-1/^的量化器决定点给出f (χ)的更改导数。 [0037] FIG. 7 is a Mathematica® program that simulate non-linear Λ Σ regulator 300 for nonlinear feedback model 302, and non-linear compensation module function f 312 a (x) = χ2, which function as quantizer compensation function is used, the table does not x +/- 1 / ^ quantizer decision point gives f (χ) changes in derivatives. 该Mathmatica®程序可从Wolfram Research, Inc.获得,其总部位于伊利诺斯州香槟市。 The Mathmatica® program is available from Wolfram Research, Inc. acquisition, which is headquartered in Champaign, Illinois.

[0038] 图8所示为开关状态控制器输入信号V (η)随时间变化的曲线图800。 [0038] Figure 8 shows the switching state controller input signal V (η) versus time graph 800. 该开关状态控制器的输入信号ν(η)随时间变化呈线性,可跟踪时变输入电SVx(t)的变化,使得开关功率转换器402的能量传递可跟踪输入电压Vx (t)的变化。 Input signal ν (η) of the switch state controller changes linearly with time, when can track changes in variable input SVx (t) so that the switching power converter 402 of the energy transfer can track the input voltage Vx (t) changes .

[0039] 图9所示为非线性Λ Σ调节器600(图6)的非线性Λ Σ调节器输出信号Qpw(η)随时间变化的曲线图900 。 [0039] Figure 9 is a nonlinear Λ Σ regulator 600 (FIG. 6) of the non-linear Λ Σ regulator output signal Qpw (η) versus time graph 900. 非线性△ Σ调节器600进行一次平方根运算,使得输出信号Qpff (η)的平均值如虚线902所示,是开关状态控制器输入信号V (η)的平方根。 Average of the nonlinear △ Σ regulator 600 to conduct a square root operation, so that the output signal Qpff (η) as shown in the dashed line 902, is the switch state controller input signal V (η) of the square root.

[0040] 图10所示为曲线图1000,显示当非线性过程203有一个X2变换函数时,设备206的非线性过程204对曲线图900所示输入图案资料群集的响应信号Rs。 [0040] FIG. 10 is a graph 1000, shows that when there is a non-linear process 203 X2 transform function, nonlinear process equipment 206 204 Rs a plot of the response signal input pattern data shown in the cluster 900. 由于非线性Λ Σ调节器600包括了模拟开关功率转换器402的能量传递过程平方的非线性系统反馈模型602,响应信号Rs如虚线1002。 Because of the nonlinear Λ Σ regulator 600 includes a switching power converter 402 analog energy transfer square nonlinear feedback system model 602, the response signal Rs as a dotted line 1002.

[0041] 所示,是线性的。 [0041] shown, it is linear. 因此,该非线性Λ Σ调节器包括一个反馈模型,用于模拟受控的非线性过程,并且便于进行频谱整形,将噪声移出非线性过程响应信号的频谱范围中的基本频带。 Therefore, the non-linear Λ Σ regulator comprises a feedback model to simulate nonlinear process controlled and facilitate spectrum shaping the noise out of the nonlinear process in response to the spectral range of the base band signal.

[0042] 尽管已经对本发明作了详细描述,但应明白,在不偏离所附权利要求中定义的本发明之范围和精神情况下仍可以进行多种变化、替代和更改。 [0042] Despite the detailed description of the invention, it should be understood from the scope and spirit of the situation in the appended claims without departing from the invention as defined in the can still be various changes, substitutions and alterations.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US634481116 Mar 20005 Feb 2002Audio Logic, Inc.Power supply compensation for noise shaped, digital amplifiers
Non-Patent Citations
Reference
1Steven Dunlap等.Design of a delta-digma modulated switching power supply.《IEEE》.1998,第1卷190-192,图5,7.
Classifications
International ClassificationH03M3/04
Cooperative ClassificationH02M1/4225, Y02B70/126, Y02P80/112, H03M3/476
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