JPS6443084A - Servo abnormality detection - Google Patents
Servo abnormality detectionInfo
- Publication number
- JPS6443084A JPS6443084A JP62198094A JP19809487A JPS6443084A JP S6443084 A JPS6443084 A JP S6443084A JP 62198094 A JP62198094 A JP 62198094A JP 19809487 A JP19809487 A JP 19809487A JP S6443084 A JPS6443084 A JP S6443084A
- Authority
- JP
- Japan
- Prior art keywords
- command
- current
- motor
- servo
- compares
- 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
Abstract
PURPOSE:To allow a motor to detect servo abnormality for sure, by comparing the sign of positional deviation with the rotating direction of motor in every sampling time and by judging it as servo-abnormal when both of them above are different in more than designated number of sampling attempts. CONSTITUTION:A position command section 100 compares a position command with a position feedback signal and outputs a speed command. A speed control 102 compares a speed command with a speed feedback signal and outputs a current command. A current control circuit 103 compares a current command with a current feedback signal and controls the current of a motor 105. On the other hand, the sign of positional deviation is compared with the rotating direction of the motor in every sampling step. If both of them are continuously different in more than designated number of sampling attempts, it is judged as servo-abnormal. In this way, the servo abnormality can be surely detected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62198094A JPS6443084A (en) | 1987-08-10 | 1987-08-10 | Servo abnormality detection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62198094A JPS6443084A (en) | 1987-08-10 | 1987-08-10 | Servo abnormality detection |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6443084A true JPS6443084A (en) | 1989-02-15 |
Family
ID=16385399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62198094A Pending JPS6443084A (en) | 1987-08-10 | 1987-08-10 | Servo abnormality detection |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6443084A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03230783A (en) * | 1990-02-05 | 1991-10-14 | Kitazawa Valve:Kk | Abnormal state detecting mechanism for stop position for electrically-driven actuator |
JPH03235686A (en) * | 1990-02-09 | 1991-10-21 | Matsushita Electric Ind Co Ltd | Motor controller |
JPH0522977A (en) * | 1991-07-12 | 1993-01-29 | Yaskawa Electric Corp | Detection and prevention of over-running of servo motor |
WO1996033549A1 (en) * | 1995-04-19 | 1996-10-24 | Fanuc Ltd | Method and apparatus for detecting runaway of motor |
JP2010172117A (en) * | 2009-01-23 | 2010-08-05 | Sanyo Electric Co Ltd | Motor speed controller |
CN111211712A (en) * | 2020-01-14 | 2020-05-29 | 之江实验室 | Unmanned aerial vehicle motor driving system and motor fault-tolerant control method |
-
1987
- 1987-08-10 JP JP62198094A patent/JPS6443084A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03230783A (en) * | 1990-02-05 | 1991-10-14 | Kitazawa Valve:Kk | Abnormal state detecting mechanism for stop position for electrically-driven actuator |
JPH03235686A (en) * | 1990-02-09 | 1991-10-21 | Matsushita Electric Ind Co Ltd | Motor controller |
JPH0522977A (en) * | 1991-07-12 | 1993-01-29 | Yaskawa Electric Corp | Detection and prevention of over-running of servo motor |
WO1996033549A1 (en) * | 1995-04-19 | 1996-10-24 | Fanuc Ltd | Method and apparatus for detecting runaway of motor |
JPH08294295A (en) * | 1995-04-19 | 1996-11-05 | Fanuc Ltd | Detection of uncontrolled rotation of motor and uncontrolled rotation detecting apparatus |
US5767646A (en) * | 1995-04-19 | 1998-06-16 | Fanuc Ltd. | Method of and apparatus for detecting anomalous running of motor |
JP2010172117A (en) * | 2009-01-23 | 2010-08-05 | Sanyo Electric Co Ltd | Motor speed controller |
CN111211712A (en) * | 2020-01-14 | 2020-05-29 | 之江实验室 | Unmanned aerial vehicle motor driving system and motor fault-tolerant control method |
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