JPS6464591A - Monitor for motor drive system - Google Patents

Monitor for motor drive system

Info

Publication number
JPS6464591A
JPS6464591A JP21805987A JP21805987A JPS6464591A JP S6464591 A JPS6464591 A JP S6464591A JP 21805987 A JP21805987 A JP 21805987A JP 21805987 A JP21805987 A JP 21805987A JP S6464591 A JPS6464591 A JP S6464591A
Authority
JP
Japan
Prior art keywords
signal
temperature
coil
motor
main current
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
JP21805987A
Other languages
Japanese (ja)
Inventor
Mineyo Morimoto
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.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries 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 Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP21805987A priority Critical patent/JPS6464591A/en
Publication of JPS6464591A publication Critical patent/JPS6464591A/en
Pending legal-status Critical Current

Links

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  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE:To enable detecting a temperature in a motor coil without using a temperature measuring element by computing a coil temperature signal through a DC voltage drop caused by the main current of a static coil in a motor and said main current. CONSTITUTION:The quotient of the DC voltage drop signal (v) of a commutating-pole coil 3 divided by a main current signal (i) taken out from a shunt 4 is computed by a divider 5 to obtain a resistance signal (r). Then, a temperature signal (t) is obtained from said resistance signal (r) by the use of a function unit 6. Because said temperature signal (t) indicates the average temperature of said commutating-pole coil 3, the loaded condition of a DC motor can be always monitored by this means even at a distant place.
JP21805987A 1987-09-02 1987-09-02 Monitor for motor drive system Pending JPS6464591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21805987A JPS6464591A (en) 1987-09-02 1987-09-02 Monitor for motor drive system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21805987A JPS6464591A (en) 1987-09-02 1987-09-02 Monitor for motor drive system

Publications (1)

Publication Number Publication Date
JPS6464591A true JPS6464591A (en) 1989-03-10

Family

ID=16714000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21805987A Pending JPS6464591A (en) 1987-09-02 1987-09-02 Monitor for motor drive system

Country Status (1)

Country Link
JP (1) JPS6464591A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02256839A (en) * 1989-03-29 1990-10-17 Hitachi Ltd Electric throttle valve control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02256839A (en) * 1989-03-29 1990-10-17 Hitachi Ltd Electric throttle valve control device

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