CN102789393A - Virtual simulation method for linkage of aircraft cabin display device and cabin outside scene - Google Patents

Abstract

The invention relates to a virtual simulation method for linkage of an aircraft cabin display device and a cabin outside scene. The method is characterized in that the cabin display device system is embedded in a virtual view system by use of a vpGLStudio plug-in package provided by Vega Prime, and the values of aircraft coordinates (x, y, z) and direction angle and elevation angle (Sigma) of a land marker building or an air flyer relative to the aircraft under the screen coordinates are introduced into GL Studio parameters by calling a VPValuePassToGLS function, so as to display the positional relationship on the screen of the cabin display device and further to achieve the real-time linkage simulation of the display screen in the cabin and the outside flying scene.

Description

The dummy emulation method of a kind of aircraft cabin display and the interlock of passenger cabin outdoor scene

Technical field

The present invention relates to the dummy emulation method of a kind of aircraft cabin display and passenger cabin outdoor scene interlock; Satisfy the actual needs of the inside and outside linkage display flight of aircraft cabin; Utilize virtual reality technology and visualization technique; Made up the emulation of aircraft virtual cockpit and controlled platform, be used for Real-time and Dynamic and reproduce the aircraft simulation flight course.

Background technology

At present, virtual reality technology is widely used, and utilizes virtual reality technology and emulation technology, and exploitation aircraft virtual flight experiment simulation system can effectively improve test, training quality and data analysis capabilities.Big system emulation for as the virtual flight pilot system will produce lot of data, and it is very time-consuming that engineering technical personnel will analyze these data and analytic process seems very uninteresting again.Therefore, in the software implementing course of aircraft simulation flight, all attach great importance to computer simulation technique effect therein both at home and abroad.

In the existing aircraft simulation flight Simulation System design; GDI is adopted in the exploitation of cockpit display system or the OpenGL programming realizes; And the Virtual Cockpit Display System workload is big; And degree true to nature is not high, causes the cockpit display system complexity to descend, and only can satisfy the needs that basic flight simulation parameter shows; Utilize the instrument emulation platform GL Studio of specialty, be difficult to simulation for aircraft cabin environment and flight environment of vehicle thereof, simulation process often lacks the sense of reality of immersion.

Summary of the invention

The technical matters that solves

Weak point for fear of prior art; The present invention proposes the dummy emulation method of a kind of aircraft cabin display and the interlock of passenger cabin outdoor scene, adopts the virtual instrument developing instrument software GL Studio of specialty to combine the method for Vega Prime to come the simulated flight process of virtual emulation aircraft cabin display and outdoor scene interlock.

Technical scheme

The dummy emulation method of a kind of aircraft cabin display and the interlock of passenger cabin outdoor scene is characterized in that step is following:

The what comes into a driver's that step 1 virtual emulation passenger cabin is outer: alternative flight Geographical Environment Background is loaded in the Vega Prime software; According to kinetics equation, work out out the software that the functions control aircraft carries out simulated flight simultaneously;

Step 2 calculate aircraft coordinate under the screen coordinate (x, y, z): in GL Studio emulation passenger cabin in the display screen, screen coordinate with the aircraft body as the coordinate center, the coordinate of aircraft (x, y z) are resolved by following formula and obtain:

$\left\{\begin{array}{c}x=x_g\×\cos \mathrm{\ψ}\cos \mathrm{\θ}+y_g\×\sin \mathrm{\ψ}\sin \mathrm{\θ}+z_g\×(-\sin \mathrm{\θ})\\ y=x_g\×(\cos \mathrm{\ψ}\sin \mathrm{\θ}\sin \mathrm{\ψ}-\sin \mathrm{\ψ}\cos \mathrm{\φ})+y_g\×\\ ({\sin }^2\mathrm{\ψ}\sin \mathrm{\θ}+\cos \mathrm{\ψ}\cos \mathrm{\φ})+z_g\×\left(\cos \mathrm{\θ}\sin \mathrm{\φ}\right)\\ z=x_g\×(\cos \mathrm{\ψ}\sin \mathrm{\θ}+\sin \mathrm{\ψ}\sin \mathrm{\φ})+y_g\×\\ (\sin \mathrm{\ψ}\sin \mathrm{\θ}\sin \mathrm{\φ}-\cos \mathrm{\ψ}\sin \mathrm{\φ})+z_g\×\left(\cos \mathrm{\θ}\cos \mathrm{\φ}\right)\end{array}\right.$

Wherein: (x _g, y _g, z _g) be the geographical position coordinates of aircraft under earth coordinates; θ is the flight parameter angle of pitch of aircraft under earth coordinates; ψ is the flight parameter crab angle of aircraft under earth coordinates; φ is the flight parameter angle of pitch of aircraft under earth coordinates, and ψ is the flight parameter roll angle of aircraft under earth coordinates;

Step 3: calculate landmark thing or the position of the relative aircraft of airflight thing under the screen coordinate, the deflection of landmark thing or the relative aircraft of airflight thing

landmark thing or airflight thing are with respect to the elevation angle σ of aircraft:

$\mathrm{\σ}=\arctan \frac{z_t-z}{{(x_t-x)}^2+{(y_t-y)}^2}$

Wherein: ψ is the crab angle of aircraft under earth coordinates,

Be the deflection of landmark thing under earth coordinates or the relative aircraft of airflight thing, σ be under earth coordinates landmark thing or airflight thing with respect to the elevation angle of aircraft, (x _t, y _t, z _t) be landmark thing or the coordinate of airflight thing under earth coordinates;

Step 4 is accomplished the inside and outside what comes into a driver's linkage simulation of passenger cabin: the vpGLStudio plug-in unit that provides through Vega Prime embeds the cockpit display system in the virtual views system; Call VPValuePassToGLS () function the aircraft coordinate (x under the screen coordinate; Y; Z), the numerical value of deflection of landmark thing or the relative aircraft of airflight thing

and elevation angle σ imports in the parameter of GL Studio; On the passenger cabin indicator screen, to show both position relations, realize the real-time linkage simulation of interior display screen of passenger cabin and outside flight scene.

Beneficial effect

The dummy emulation method of a kind of aircraft cabin display that the present invention proposes and the interlock of passenger cabin outdoor scene; Virtual reality emulation as core technology adopts the computer graphic image technology; According to the emulation purpose, structure dummy vehicle and reproduction flight environment of vehicle can reach simulated effect very true to nature; Objective, reproduce simulation process in real time, can for aircraft flight emulation, flight path observation, experimentation ex-post analysis etc. provide a kind of intuitively, simulation means easily.

Description of drawings

Fig. 1: controlling aircraft is carried out the flight simulation design sketch

Fig. 2: four built on stilts middle flying object display frames in the passenger cabin

Fig. 3: passenger cabin outer four built on stilts middle flying object effect synoptic diagram

Embodiment

Combine embodiment, accompanying drawing that the present invention is further described at present:

1) sets up the motion model of aircraft,, write self-defining mode of motion according to kinetics equation; The flying speed that the substitution aircraft is known, motor power, resistance; Flight path angle, lift, speed roll angle; Parameter numerical value such as course angle, the state vector of the real-time parameter of aircraft in the flight course that calculates.Utilize Vega Prime software that aircraft and self-defined motion model are bound.In VP, be provided with simultaneously and add various weather and flight Geographical Environment Background, the simulated flight process of controlling aircraft, its effect is as shown in Figure 1.

When 2) carrying out graphic presentation, need convert aircraft, landmark thing or the isoparametric position coordinates of airflight thing into screen coordinate.Under the known geographic coordinate system, aircraft and four built on stilts in the position coordinates of flying objects, calculate through formula and can obtain under the screen coordinate system aircraft and four built on stilts middle flying object (A under the aircraft coordinate and screen coordinate ₁, A ₂, A ₃, A ₄) deflection

And elevation angle σ.Its concrete parameter is as shown in table 1.

The coordinate of table 1 aircraft and airflight thing and relative angle relation

Wherein, aerocraft flying parameter is that pitching angle theta is that 5 °, crab angle ψ are that 20 ° and roll angle φ are 10 °.Inside and outside effect such as the Fig. 2 and shown in Figure 3 that shows four built on stilts middle flying objects of passenger cabin.

3) flight parameters such as the coordinate of the earth coordinates of transmission aircraft and airflight thing and pitching angle theta, crab angle ψ, roll angle φ are given VP, carry out assignment, the what comes into a driver's that the analog simulation passenger cabin is outer; Transmit the aircraft coordinate (x under the body axis system; Y; Z), deflection of landmark thing or the relative aircraft of airflight thing

and elevation angle σ give GL Studio; Emulation shows both position relations on the passenger cabin indicator screen, realizes the real-time linkage simulation of interior display screen of passenger cabin and outside flight scene basically.

Claims (1)

1. the dummy emulation method of aircraft cabin display and passenger cabin outdoor scene interlock is characterized in that step is following:

The what comes into a driver's that step 1 virtual emulation passenger cabin is outer: alternative flight Geographical Environment Background is loaded in the Vega Prime software; According to kinetics equation, work out out the software that the functions control aircraft carries out simulated flight simultaneously;

Step 2 calculate aircraft coordinate under the screen coordinate (x, y, z): in GL Studio emulation passenger cabin in the display screen, screen coordinate with the aircraft body as the coordinate center, the coordinate of aircraft (x, y z) are resolved by following formula and obtain:

$\left\{\begin{array}{c}x=x_g\×\cos \mathrm{\ψ}\cos \mathrm{\θ}+y_g\×\sin \mathrm{\ψ}\sin \mathrm{\θ}+z_g\×(-\sin \mathrm{\θ})\\ y=x_g\×(\cos \mathrm{\ψ}\sin \mathrm{\θ}\sin \mathrm{\ψ}-\sin \mathrm{\ψ}\cos \mathrm{\φ})+y_g\×\\ ({\sin }^2\mathrm{\ψ}\sin \mathrm{\θ}+\cos \mathrm{\ψ}\cos \mathrm{\φ})+z_g\×\left(\cos \mathrm{\θ}\sin \mathrm{\φ}\right)\\ z=x_g\×(\cos \mathrm{\ψ}\sin \mathrm{\θ}+\sin \mathrm{\ψ}\sin \mathrm{\φ})+y_g\×\\ (\sin \mathrm{\ψ}\sin \mathrm{\θ}\sin \mathrm{\φ}-\cos \mathrm{\ψ}\sin \mathrm{\φ})+z_g\×\left(\cos \mathrm{\θ}\cos \mathrm{\φ}\right)\end{array}\right.$

Wherein: (x _g, y _g, z _g) be the geographical position coordinates of aircraft under earth coordinates; θ is the flight parameter angle of pitch of aircraft under earth coordinates; ψ is the flight parameter crab angle of aircraft under earth coordinates; φ is the flight parameter angle of pitch of aircraft under earth coordinates, and ψ is the flight parameter roll angle of aircraft under earth coordinates;

Step 3: calculate landmark thing or the position of the relative aircraft of airflight thing under the screen coordinate, the deflection of landmark thing or the relative aircraft of airflight thing landmark thing or airflight thing are with respect to the elevation angle σ of aircraft:

$\mathrm{\σ}=\arctan \frac{z_t-z}{{(x_t-x)}^2+{(y_t-y)}^2}$

Wherein: ψ is the crab angle of aircraft under earth coordinates,

Be the deflection of landmark thing under earth coordinates or the relative aircraft of airflight thing, σ be under earth coordinates landmark thing or airflight thing with respect to the elevation angle of aircraft, (x _t, y _t, z _t) be landmark thing or the coordinate of airflight thing under earth coordinates;

Step 4 is accomplished the inside and outside what comes into a driver's linkage simulation of passenger cabin: the vpGLStudio plug-in unit that provides through Vega Prime embeds the cockpit display system in the virtual views system; Call VPValuePassToGLS () function the aircraft coordinate (x under the screen coordinate; Y; Z), the numerical value of deflection of landmark thing or the relative aircraft of airflight thing

and elevation angle σ imports in the parameter of GL Studio; On the passenger cabin indicator screen, to show both position relations, realize the real-time linkage simulation of interior display screen of passenger cabin and outside flight scene.

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