JPS561790A - Linear-motor control circuit - Google Patents

Linear-motor control circuit

Info

Publication number
JPS561790A
JPS561790A JP7655979A JP7655979A JPS561790A JP S561790 A JPS561790 A JP S561790A JP 7655979 A JP7655979 A JP 7655979A JP 7655979 A JP7655979 A JP 7655979A JP S561790 A JPS561790 A JP S561790A
Authority
JP
Japan
Prior art keywords
coil
sampling
linear motor
output
control circuit
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP7655979A
Other languages
Japanese (ja)
Inventor
Teruaki Emori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7655979A priority Critical patent/JPS561790A/en
Publication of JPS561790A publication Critical patent/JPS561790A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/2855—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Linear Motors (AREA)

Abstract

PURPOSE:To make the highly accurate speed sensing possible by sampling the voltage across the coil terminals of a linear motor at a specified cycle, and preventing the flow of the driving current through the coil during the sampling period. CONSTITUTION:The terminal voltage across a linear motor coil is applied to a differential amplifier 2, thereby a counter electromotive force is detected. The output of the differential amplifier 2 is supplied to a control circuit 5 together with a reference speed Vref, and the control output CONi is intermittently supplied to a holding circuit 6 by a sampling signal SMP, and the output of the holding circuit 6 is given to a linear motor coil 1 by a signal N/FD which is formed by inverting the sampling signal. During the sampling period, the driving current is not flowed through the coil. Therefore, only a speed component is included in the terminal voltage of the coil, and the accuracy in speed sensing can be enhanced.
JP7655979A 1979-06-18 1979-06-18 Linear-motor control circuit Pending JPS561790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7655979A JPS561790A (en) 1979-06-18 1979-06-18 Linear-motor control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7655979A JPS561790A (en) 1979-06-18 1979-06-18 Linear-motor control circuit

Publications (1)

Publication Number Publication Date
JPS561790A true JPS561790A (en) 1981-01-09

Family

ID=13608596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7655979A Pending JPS561790A (en) 1979-06-18 1979-06-18 Linear-motor control circuit

Country Status (1)

Country Link
JP (1) JPS561790A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150687A (en) * 1984-12-24 1986-07-09 Toshiba Corp Moving device
JPS62147985A (en) * 1985-12-20 1987-07-01 Sony Corp Control circuit for linear motor
EP0403684A2 (en) * 1989-06-22 1990-12-27 Rosen, Howard Antenna positioning system
JP2001211687A (en) * 1999-11-30 2001-08-03 Texas Instr Inc <Ti> Circuit and method for determining speed of voice coil
EP2106019A1 (en) * 2008-03-26 2009-09-30 Panasonic Electric Works Co., Ltd. Method for controlling operation of a linear vibration motor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150687A (en) * 1984-12-24 1986-07-09 Toshiba Corp Moving device
JPS62147985A (en) * 1985-12-20 1987-07-01 Sony Corp Control circuit for linear motor
EP0403684A2 (en) * 1989-06-22 1990-12-27 Rosen, Howard Antenna positioning system
EP0403684A3 (en) * 1989-06-22 1991-04-24 Rosen, Howard Antenna positioning system
JP2001211687A (en) * 1999-11-30 2001-08-03 Texas Instr Inc <Ti> Circuit and method for determining speed of voice coil
EP2106019A1 (en) * 2008-03-26 2009-09-30 Panasonic Electric Works Co., Ltd. Method for controlling operation of a linear vibration motor

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