WO1988005156A3 - Apparatus and method for indicating the extent of movement of a movable member of an electromagnetic device - Google Patents

Apparatus and method for indicating the extent of movement of a movable member of an electromagnetic device Download PDF

Info

Publication number
WO1988005156A3
WO1988005156A3 PCT/US1987/003207 US8703207W WO8805156A3 WO 1988005156 A3 WO1988005156 A3 WO 1988005156A3 US 8703207 W US8703207 W US 8703207W WO 8805156 A3 WO8805156 A3 WO 8805156A3
Authority
WO
WIPO (PCT)
Prior art keywords
extent
indicating
movement
print wire
signal
Prior art date
Application number
PCT/US1987/003207
Other languages
French (fr)
Other versions
WO1988005156A2 (en
Inventor
John Grayson Mitchell
Original Assignee
Ncr Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ncr Co filed Critical Ncr Co
Priority to DE8888901739T priority Critical patent/DE3767486D1/en
Publication of WO1988005156A2 publication Critical patent/WO1988005156A2/en
Publication of WO1988005156A3 publication Critical patent/WO1988005156A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/30—Control circuits for actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/16—Means for cocking or resetting hammers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means

Abstract

An apparatus (34) for indicating the extent of movement of a print wire (38) of a print device when actuated by the energization of an associated coil (50). The apparatus includes first generating means for generating a first signal dependent on the energizing current for the coil (50), differentiating means for deriving a derivative signal from said first signal, and second generating means for generating an analog signal dependent on the amplitude of a portion of the derivative signal corresponding to a perturbation in the coil energizing current produced as a result of the print wire (38) contacting an associated platen (40). The analog signal is representative of the distance travelled by the print wire (38). The invention can be used to calculate the gap between a print wire and a platen in situations where this gap is inaccessible for measurement by a feeler gauge.
PCT/US1987/003207 1986-12-24 1987-12-04 Apparatus and method for indicating the extent of movement of a movable member of an electromagnetic device WO1988005156A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8888901739T DE3767486D1 (en) 1986-12-24 1987-12-04 METHOD AND DEVICE FOR INDICATING THE MOVEMENT OF A PART OF AN ELECTROMAGNETIC DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US945,995 1986-12-24
US06/945,995 US4907901A (en) 1986-12-24 1986-12-24 Method and apparatus for measuring displacement of a moveable member of an electromagnetic device by using perturbations in the device's energizing current

Publications (2)

Publication Number Publication Date
WO1988005156A2 WO1988005156A2 (en) 1988-07-14
WO1988005156A3 true WO1988005156A3 (en) 1988-08-25

Family

ID=25483804

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1987/003207 WO1988005156A2 (en) 1986-12-24 1987-12-04 Apparatus and method for indicating the extent of movement of a movable member of an electromagnetic device

Country Status (5)

Country Link
US (1) US4907901A (en)
EP (1) EP0294474B1 (en)
JP (1) JPH01501614A (en)
DE (1) DE3767486D1 (en)
WO (1) WO1988005156A2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1228727B (en) * 1989-03-15 1991-07-03 Bull Hn Information Syst APPARATUS FOR AUTOMATIC ADJUSTMENT OF THE DISTANCE OF A PRINT HEAD FROM THE IMPRESSION SUPPORT.
US5204633A (en) * 1992-02-25 1993-04-20 International Business Machines Corporation Electromagnetic contactor with closure fault indicator
US5250897A (en) * 1992-05-07 1993-10-05 Lsi Logic Corporation Solenoid/slug gap measurement tool for semiconductor equipment and method of measurement
JP2838952B2 (en) * 1992-07-17 1998-12-16 沖電気工業株式会社 Head gap adjustment method for wire dot impact printer device
US5583434A (en) * 1993-07-20 1996-12-10 Martin Marietta Energy Systems, Inc. Method and apparatus for monitoring armature position in direct-current solenoids
US5942892A (en) * 1997-10-06 1999-08-24 Husco International, Inc. Method and apparatus for sensing armature position in direct current solenoid actuators
ES2182400T3 (en) * 1997-12-23 2003-03-01 Siemens Ag INSTALLATION FOR THE CONTROL OF AN ELECTROMECHANICAL REGULATION DEVICE.
US6545852B1 (en) 1998-10-07 2003-04-08 Ormanco System and method for controlling an electromagnetic device
US6406102B1 (en) 1999-02-24 2002-06-18 Orscheln Management Co. Electrically operated parking brake control system
US6211665B1 (en) 1999-04-13 2001-04-03 Alliedsignal Inc. Solenoid motion detection circuit
IT1321181B1 (en) * 2000-05-04 2003-12-30 Magneti Marelli Spa METHOD AND DEVICE FOR ESTIMATING THE POSITION OF A BODY ACTUATOR IN AN ELECTROMAGNETIC ACTUATOR FOR THE CONTROL OF A
JP5019303B2 (en) * 2010-03-03 2012-09-05 Ｓｍｃ株式会社 Electromagnetic valve driving circuit, electromagnetic valve, and electromagnetic valve driving method
DE102012005936B4 (en) * 2012-03-26 2022-11-24 Bürkert Werke GmbH Solenoid valve with a condition monitoring unit and method for condition monitoring of a solenoid valve
CN104180826B (en) * 2013-05-27 2016-12-28 上海汽车集团股份有限公司 The device that in monitoring automobile engine nacelle, pipeline or wire harness are interfered

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740615A (en) * 1971-03-20 1973-06-19 Honeywell Inf Systems Actuating and confirming device for printing electromagnets

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891918A (en) * 1971-03-23 1975-06-24 James F Ellis Linear displacement transducer utilizing an oscillator whose average period varies as a linear function of the displacement
US3956693A (en) * 1974-12-23 1976-05-11 The Garrett Corporation Method and apparatus for testing magnetic sensors using a saturable core and variable load resistors to simulate actual test conditions
US4100480A (en) * 1976-08-20 1978-07-11 Dataproducts Corporation Position and velocity sensors
US4228396A (en) * 1978-05-26 1980-10-14 Dataproducts Corporation Electronic tachometer and combined brushless motor commutation and tachometer system
US4218150A (en) * 1978-11-20 1980-08-19 Vydec, Inc. Matrix printer
US4293888A (en) * 1979-06-25 1981-10-06 International Business Machines Corporation Print hammer drive circuit with compensation for voltage variation
US4284961A (en) * 1979-09-19 1981-08-18 The United States Of America As Represented By The Secretary Of The Air Force Digital position transducer including variable tuning element oscillator
US4353656A (en) * 1980-10-14 1982-10-12 Xerox Corporation Moving coil, multiple energy print hammer system including a closed loop servo
US4480934A (en) * 1982-12-20 1984-11-06 International Business Machines Corporation Ballistic print wire actuator using a telescopic armature
US4547087A (en) * 1983-01-20 1985-10-15 Siemens Aktiengesellschaft Microprocessor-controlled printing mechanism having an opto-electronic sensor
US4523867A (en) * 1983-07-25 1985-06-18 Genicom Corporation Bi-directional drive print wire actuator with forward-velocity and reverse-position closed loop feedback control
US4538930A (en) * 1984-09-24 1985-09-03 Xerox Corporation Adaptive print hammer damper

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740615A (en) * 1971-03-20 1973-06-19 Honeywell Inf Systems Actuating and confirming device for printing electromagnets

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM Technical Disclosure Bulletin, vol. 28, no. 6, November 1985, IBM Corp. (New York, US), "Print head driver protection circuit", pages 2374-2375 *
Research Disclosure, no. 241, May 1984, (Havant, Hampshire, GB), "Matrix printer wire driver tester", page 208 *

Also Published As

Publication number Publication date
JPH01501614A (en) 1989-06-08
EP0294474A1 (en) 1988-12-14
WO1988005156A2 (en) 1988-07-14
DE3767486D1 (en) 1991-02-21
US4907901A (en) 1990-03-13
EP0294474B1 (en) 1991-01-16

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