JPS5763457A - Diagnosis system for capstain tachometer - Google Patents

Diagnosis system for capstain tachometer

Info

Publication number
JPS5763457A
JPS5763457A JP55138657A JP13865780A JPS5763457A JP S5763457 A JPS5763457 A JP S5763457A JP 55138657 A JP55138657 A JP 55138657A JP 13865780 A JP13865780 A JP 13865780A JP S5763457 A JPS5763457 A JP S5763457A
Authority
JP
Japan
Prior art keywords
tachometer
motor
circuit
fixed speed
voltage
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.)
Granted
Application number
JP55138657A
Other languages
Japanese (ja)
Other versions
JPH02787B2 (en
Inventor
Hiroaki Saijo
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 JP55138657A priority Critical patent/JPS5763457A/en
Publication of JPS5763457A publication Critical patent/JPS5763457A/en
Publication of JPH02787B2 publication Critical patent/JPH02787B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To provide a diagnosis system for a motor system which is driven at a fixed speed by feeding back the speed signal of a digital tachometer, whereby the tachometer is diagnosed whether it is good or bad by tachometer pulses of 2 phases to be generated by the motor which is applied with a fixed voltage. CONSTITUTION:The rotation of a capstan motor 19 at the time of normal running at a fixed speed is detected by a tachometer circuit 15 and tachometer pulses are fed back to a comparator circuit 16 through a cycle time interval count circuit 14 and the motor is caused to run at a fixed speed by giving differential signals obtained by the comparison with fixed speed signals into a capstan drive circuit 11. The motor's torque is also controlled by feeding back the motor current through a current feedback circuit 12. At the time of diagnosis, the motor is caused to run at a fixed speed depending on a load when a fixed voltage is applied to the drive circuit 11 by changing over switches 17, 18 and also by feeding back the voltage through a voltage feedback circuit 13. Under this condition, the diagnosis of the tachometer is carried out by counting the duty ratio and phase difference is carried out by counting the duty ratio and phase difference of tachometer pulses of 2 phases. A, B with the count circuit 14 and by judging them with the comparator circuit 16.
JP55138657A 1980-10-06 1980-10-06 Diagnosis system for capstain tachometer Granted JPS5763457A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55138657A JPS5763457A (en) 1980-10-06 1980-10-06 Diagnosis system for capstain tachometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55138657A JPS5763457A (en) 1980-10-06 1980-10-06 Diagnosis system for capstain tachometer

Publications (2)

Publication Number Publication Date
JPS5763457A true JPS5763457A (en) 1982-04-16
JPH02787B2 JPH02787B2 (en) 1990-01-09

Family

ID=15227092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55138657A Granted JPS5763457A (en) 1980-10-06 1980-10-06 Diagnosis system for capstain tachometer

Country Status (1)

Country Link
JP (1) JPS5763457A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109651U (en) * 1987-01-06 1988-07-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109651U (en) * 1987-01-06 1988-07-14

Also Published As

Publication number Publication date
JPH02787B2 (en) 1990-01-09

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