JPS57116270A - Circuit for detecting abnormality of servomotor - Google Patents

Circuit for detecting abnormality of servomotor

Info

Publication number
JPS57116270A
JPS57116270A JP122281A JP122281A JPS57116270A JP S57116270 A JPS57116270 A JP S57116270A JP 122281 A JP122281 A JP 122281A JP 122281 A JP122281 A JP 122281A JP S57116270 A JPS57116270 A JP S57116270A
Authority
JP
Japan
Prior art keywords
pulse generator
servomotor
abnormality
breakdown
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
JP122281A
Other languages
Japanese (ja)
Inventor
Kazuo Kudo
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP122281A priority Critical patent/JPS57116270A/en
Publication of JPS57116270A publication Critical patent/JPS57116270A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

PURPOSE:To improve working efficiency of the system in position control of an XY table employing the DC servomotor having a pulse generator, by detecting the breakdown or semi-breakdown of the wire of the pulse generator positively, and finding the abnormality of the servomotor in an early stage. CONSTITUTION:The speed feedback from a tachogenerator 4 attached to the DC servomotor 3 and the position feedback from the pulse generator 5 are performed, and feedback signal PFB from the pulse generator 5 is given to an abnormality detecting circuit 6. In said abnormality detecting circuit 6, the breakdown or semi-breakdown of the wire of the pulse generator 5 is judged by the presence or absence of the feedback signal PFB. When the abnormality is detected, an abnormal signal ER is sent to a control circuit 1. In this constitution, since the abnormality of the servomotor (pulse generator 5) can be found in the early stage, the occurrence of the detective products due to misalignment can be prevented, and the working efficiency of the system can be enhanced.
JP122281A 1981-01-09 1981-01-09 Circuit for detecting abnormality of servomotor Pending JPS57116270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP122281A JPS57116270A (en) 1981-01-09 1981-01-09 Circuit for detecting abnormality of servomotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP122281A JPS57116270A (en) 1981-01-09 1981-01-09 Circuit for detecting abnormality of servomotor

Publications (1)

Publication Number Publication Date
JPS57116270A true JPS57116270A (en) 1982-07-20

Family

ID=11495433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP122281A Pending JPS57116270A (en) 1981-01-09 1981-01-09 Circuit for detecting abnormality of servomotor

Country Status (1)

Country Link
JP (1) JPS57116270A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61139215A (en) * 1984-12-07 1986-06-26 ソニー株式会社 Disconnection detecting circuit for control wire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61139215A (en) * 1984-12-07 1986-06-26 ソニー株式会社 Disconnection detecting circuit for control wire

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