JPS57151296A - Speed controller of induction motor - Google Patents
Speed controller of induction motorInfo
- Publication number
- JPS57151296A JPS57151296A JP56036121A JP3612181A JPS57151296A JP S57151296 A JPS57151296 A JP S57151296A JP 56036121 A JP56036121 A JP 56036121A JP 3612181 A JP3612181 A JP 3612181A JP S57151296 A JPS57151296 A JP S57151296A
- Authority
- JP
- Japan
- Prior art keywords
- counter
- motor
- induction motor
- converter
- thyristor
- 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 semipermanently provide the lifetime of an induction motor by controlling the motor with a thyristor controller, and controlling the thyristor with a circuit with includes a counter and a D/A converter. CONSTITUTION:When an induction motor which drives a scraper or the like for a needle making machine is controlled by a thyristor controller, a control circuit is formed of a pulse generator 1, counters 2, 4 and a D/A converter 6. The initial voltage value is outputted from the counter 4 by an operation start signal, then a signal is inputted to the ounter 4 from the counter 2 at every t seconds to counter down the counter 2 by the divided minimum voltage to finally reach 0V, and a thyristor controller is controlled through the converter 6. Accordingly, the motor speed is uniformalized in variation in the speed and is gradually lowered, and the lifetime of the motor can be increased without maintenance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56036121A JPS57151296A (en) | 1981-03-13 | 1981-03-13 | Speed controller of induction motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56036121A JPS57151296A (en) | 1981-03-13 | 1981-03-13 | Speed controller of induction motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57151296A true JPS57151296A (en) | 1982-09-18 |
Family
ID=12460942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56036121A Pending JPS57151296A (en) | 1981-03-13 | 1981-03-13 | Speed controller of induction motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57151296A (en) |
-
1981
- 1981-03-13 JP JP56036121A patent/JPS57151296A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE8105093L (en) | KIT AND DEVICE FOR SPEED CONTROL OF AN AC MOTOR | |
ES8100985A1 (en) | Windshield wiper control circuit | |
KR840000328A (en) | Homing control method of moving part and its device | |
ATE37751T1 (en) | METHOD FOR CONTROLLING THE DRIVE MOTOR OF A BELL RINGING MACHINE AND DEVICE FOR CARRYING OUT THE METHOD. | |
JPS57151296A (en) | Speed controller of induction motor | |
JPS57160380A (en) | Regenerative braking device for inverter | |
JPS576576A (en) | Power supply for inverter | |
FR2441314A1 (en) | Electric fence with voltage monitor - discontinues pulses when voltage exceeds given variable threshold | |
JPS5531512A (en) | Controlling method of spark machining | |
JPS57153590A (en) | Controlling circuit for induction motor | |
JPS5513689A (en) | Speed controller of motor | |
JPS56141790A (en) | Speed controlling device for electricmotor | |
JPS56121833A (en) | Idling speed controller for engine | |
JPS57187717A (en) | Digital speed controller | |
JPS52154020A (en) | Control system for induction motor by plurality of pulse duration modulated variable frequency inverter | |
JPS57142184A (en) | Controlling method for inverter | |
JPS56150984A (en) | Controller for stopping position of motor | |
JPS5749381A (en) | Control of servo motor | |
SU550756A1 (en) | Device for controlling a thyristor-pulse converter | |
KR880011628A (en) | Electronic driving circuit | |
JPS54145913A (en) | Motor speed controller | |
JPS53149615A (en) | Driving device of step motor | |
GB1529210A (en) | Safety supply circuit for washing machine drum driving motors | |
SU875565A1 (en) | Device for regulating dc electric motor rotational speed | |
JPS57151286A (en) | Digital speed controller |