JPS6426383A - Motor drive circuit under closed loop control - Google Patents
Motor drive circuit under closed loop controlInfo
- Publication number
- JPS6426383A JPS6426383A JP62181975A JP18197587A JPS6426383A JP S6426383 A JPS6426383 A JP S6426383A JP 62181975 A JP62181975 A JP 62181975A JP 18197587 A JP18197587 A JP 18197587A JP S6426383 A JPS6426383 A JP S6426383A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- deviation
- feedback
- drive circuit
- motor drive
- 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
Links
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
PURPOSE:To enable the operator to detect the contact state of a signal conductor of an encoder, by comparing the absolute value of a deviation between a feedback signal and a command value signal with a reference value. CONSTITUTION:A deviation amplifier 1 gives a motor 3 a deviation signal between a command value signal V1 of a rotating position of a motor and a feedback position signal V2 through a power amplifier 2. An output signal of a rotary encoder 4 is converted into a feedback signal V2 with a pulse train signal generation circuit 5 and an up-down counter 6. On the other hand, a deviation amplifier 71 takes the deviation between the command value signal V1 and the feedback signal V2. Then the absolute value taken from an absolute value circuit 72 is compared with a reference value Vr by a comparator 73. The output of the comparator 73 becomes an abnormal detection signal such as for disconnection, unconnectedness, etc., of a signal conductor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62181975A JPS6426383A (en) | 1987-07-21 | 1987-07-21 | Motor drive circuit under closed loop control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62181975A JPS6426383A (en) | 1987-07-21 | 1987-07-21 | Motor drive circuit under closed loop control |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6426383A true JPS6426383A (en) | 1989-01-27 |
Family
ID=16110140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62181975A Pending JPS6426383A (en) | 1987-07-21 | 1987-07-21 | Motor drive circuit under closed loop control |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6426383A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002374692A (en) * | 2001-06-15 | 2002-12-26 | Hitachi Ltd | Permanent magnet motor controller |
JP2007505020A (en) * | 2003-09-10 | 2007-03-08 | コネ コーポレイション | Elevator control |
-
1987
- 1987-07-21 JP JP62181975A patent/JPS6426383A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002374692A (en) * | 2001-06-15 | 2002-12-26 | Hitachi Ltd | Permanent magnet motor controller |
JP2007505020A (en) * | 2003-09-10 | 2007-03-08 | コネ コーポレイション | Elevator control |
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