JPS576589A - Controlling system utilizing pulse width modulation - Google Patents
Controlling system utilizing pulse width modulationInfo
- Publication number
- JPS576589A JPS576589A JP7779180A JP7779180A JPS576589A JP S576589 A JPS576589 A JP S576589A JP 7779180 A JP7779180 A JP 7779180A JP 7779180 A JP7779180 A JP 7779180A JP S576589 A JPS576589 A JP S576589A
- Authority
- JP
- Japan
- Prior art keywords
- period
- positive
- inverse
- sections
- motor
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
- H02P7/04—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors by means of a H-bridge circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Feedback Control In General (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE:To reduce power loss and a current ripple, and to obtain high speed resolution by a method wherein the amount denied by the positive and inverse pulse voltage by each other is restrained at the minimum value while being divided into two portions for every period and is applied to a motor. CONSTITUTION:Positive and inverse pulse voltage are applied to the DC motor 32 by using four transistors Tr 11-14, and speed is controlled by the difference. In this case, comparison signals VS and controlling input Vr2, Vr1 are each compared to a fundamental triangular wave VBO at a fixed period, four I-IV sections are formed for every each period, and the positive and inverse direction voltage sections I, III are each generated two by two for one period. The Trs 11, 14 and the Trs 12, 13, for example, are each ON in the sections I, III, the motor is turned forward by the difference section, the width of the section I is changed to great or small size by the controlling input Vr1 and speed is controlled. Accordingly, since the amount denied by a positive period and an inverse period can be restrained at the minimum, the power loss and the current ripple are reduced, and speed resolution can be increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7779180A JPS576589A (en) | 1980-06-11 | 1980-06-11 | Controlling system utilizing pulse width modulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7779180A JPS576589A (en) | 1980-06-11 | 1980-06-11 | Controlling system utilizing pulse width modulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS576589A true JPS576589A (en) | 1982-01-13 |
Family
ID=13643800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7779180A Pending JPS576589A (en) | 1980-06-11 | 1980-06-11 | Controlling system utilizing pulse width modulation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS576589A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0208508A2 (en) * | 1985-07-02 | 1987-01-14 | Pioneer Electronic Corporation | Pulse-width modulation drive circuit |
| JPS63149703A (en) * | 1986-12-12 | 1988-06-22 | Fujitsu Ltd | Pulse width control circuit |
-
1980
- 1980-06-11 JP JP7779180A patent/JPS576589A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0208508A2 (en) * | 1985-07-02 | 1987-01-14 | Pioneer Electronic Corporation | Pulse-width modulation drive circuit |
| JPS63149703A (en) * | 1986-12-12 | 1988-06-22 | Fujitsu Ltd | Pulse width control circuit |
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