JPS558202A - Method of controlling dc braking - Google Patents
Method of controlling dc brakingInfo
- Publication number
- JPS558202A JPS558202A JP7797978A JP7797978A JPS558202A JP S558202 A JPS558202 A JP S558202A JP 7797978 A JP7797978 A JP 7797978A JP 7797978 A JP7797978 A JP 7797978A JP S558202 A JPS558202 A JP S558202A
- Authority
- JP
- Japan
- Prior art keywords
- braking
- current standard
- signal
- respect
- amplifier amp2
- 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
- Stopping Of Electric Motors (AREA)
Abstract
PURPOSE: To restrict the abrupt variation of the decelerating torque of an induction motor against braking torgue increasing rapidly in the vicinity of low speed by continuously reducing the current standard at DC braking time.
CONSTITUTION: When a signal f of reverse polarity with respect to the current standard of a signal e is applied to an arithmetic amplifier AMP2, an exponential fucntion singal of reverse polarity with respect to the standard e is applied through a resistor R23 to the amplifier AMP 2 by the operation of a resistor R22 and a capacitor C21 at the input of the amplifier AMP2 to thus cause the amplifier AMP2 to produce an output signal of exponential continuous signal as a DC braking current standard. When an induction motor is thus decelerated by means of DC braking, the current standard is continuously reduced with respect to the braking torgue abruptly increasing in the vicinity of low speed thereof to thereby restrict the abruptly increasing braking torque.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7797978A JPS558202A (en) | 1978-06-29 | 1978-06-29 | Method of controlling dc braking |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7797978A JPS558202A (en) | 1978-06-29 | 1978-06-29 | Method of controlling dc braking |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS558202A true JPS558202A (en) | 1980-01-21 |
Family
ID=13648996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7797978A Pending JPS558202A (en) | 1978-06-29 | 1978-06-29 | Method of controlling dc braking |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS558202A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5950302A (en) * | 1982-09-14 | 1984-03-23 | Metoroole:Kk | Device for measuring wide range dimension |
JPS60162491A (en) * | 1984-02-03 | 1985-08-24 | Matsushita Electric Ind Co Ltd | Braking device of motor |
JPH03253282A (en) * | 1990-02-28 | 1991-11-12 | Fuji Electric Co Ltd | Direct-current damping of induction motor by use of inverter |
JP2006060875A (en) * | 2004-08-17 | 2006-03-02 | Fuji Electric Fa Components & Systems Co Ltd | Method of controlling motor drive unit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5239688U (en) * | 1975-09-13 | 1977-03-19 |
-
1978
- 1978-06-29 JP JP7797978A patent/JPS558202A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5239688U (en) * | 1975-09-13 | 1977-03-19 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5950302A (en) * | 1982-09-14 | 1984-03-23 | Metoroole:Kk | Device for measuring wide range dimension |
JPH0256601B2 (en) * | 1982-09-14 | 1990-11-30 | Metorooru Kk | |
JPS60162491A (en) * | 1984-02-03 | 1985-08-24 | Matsushita Electric Ind Co Ltd | Braking device of motor |
JPH03253282A (en) * | 1990-02-28 | 1991-11-12 | Fuji Electric Co Ltd | Direct-current damping of induction motor by use of inverter |
JP2006060875A (en) * | 2004-08-17 | 2006-03-02 | Fuji Electric Fa Components & Systems Co Ltd | Method of controlling motor drive unit |
JP4539224B2 (en) * | 2004-08-17 | 2010-09-08 | 富士電機システムズ株式会社 | Control method of motor drive device |
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