JPS5566299A - Ac motor control apparatus - Google Patents
Ac motor control apparatusInfo
- Publication number
- JPS5566299A JPS5566299A JP13768278A JP13768278A JPS5566299A JP S5566299 A JPS5566299 A JP S5566299A JP 13768278 A JP13768278 A JP 13768278A JP 13768278 A JP13768278 A JP 13768278A JP S5566299 A JPS5566299 A JP S5566299A
- Authority
- JP
- Japan
- Prior art keywords
- torque
- frequency component
- motor
- frequency converter
- mechanical system
- 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 Ac Motors In General (AREA)
Abstract
PURPOSE: To suppress a particular frequency component of torque ripples generated by a motor, by selectively amplifying the particular frequency component in the output signal of torque sensor and controlling a frequency converter by said signal.
CONSTITUTION: An induction motor M obtaines power from a frequency converter 8a and drives a load 3 by way of a rotary shaft 2. An angular speed is sensed from the ratary shaft 2 by an angular-speed sensor 9, and a primary current is taken out from the motor M by a current transformer 10, and both signals are input to a torque sensor 11 which calculates the instantaneous torque values. The output thereof enters into a tuning circuit 12, wherein only a frequency component that is equal to the resonant frequency of a mechanical system us amplified, thereby the frequency converter 8a is controlled. Therefore, a particular frequency component in the harmonic-torque ripples contained in the generated torque can be suppressed, and the damping effect can be applied to the resonance of the mechanical system.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13768278A JPS5566299A (en) | 1978-11-08 | 1978-11-08 | Ac motor control apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13768278A JPS5566299A (en) | 1978-11-08 | 1978-11-08 | Ac motor control apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5566299A true JPS5566299A (en) | 1980-05-19 |
Family
ID=15204341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13768278A Pending JPS5566299A (en) | 1978-11-08 | 1978-11-08 | Ac motor control apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5566299A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5935597A (en) * | 1982-08-21 | 1984-02-27 | Mitsubishi Electric Corp | Control system for refrigerator |
JPS59188388A (en) * | 1983-04-07 | 1984-10-25 | Sansha Electric Mfg Co Ltd | Controller of induction motor |
-
1978
- 1978-11-08 JP JP13768278A patent/JPS5566299A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5935597A (en) * | 1982-08-21 | 1984-02-27 | Mitsubishi Electric Corp | Control system for refrigerator |
JPH0514113B2 (en) * | 1982-08-21 | 1993-02-24 | Mitsubishi Electric Corp | |
JPS59188388A (en) * | 1983-04-07 | 1984-10-25 | Sansha Electric Mfg Co Ltd | Controller of induction motor |
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