GB1178239A - Electric motor regulating systems. - Google Patents
Electric motor regulating systems.Info
- Publication number
- GB1178239A GB1178239A GB5837266A GB5837266A GB1178239A GB 1178239 A GB1178239 A GB 1178239A GB 5837266 A GB5837266 A GB 5837266A GB 5837266 A GB5837266 A GB 5837266A GB 1178239 A GB1178239 A GB 1178239A
- Authority
- GB
- United Kingdom
- Prior art keywords
- load
- change
- signal
- output
- speed
- 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.)
- Expired
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
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/2855—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Metal Rolling (AREA)
Abstract
1,178,239. Automatic control of speed. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Dec. 18, 1967 [Dec. 30, 1966], No.58372/66. Heading G3R. In an electric motor control system, e.g. in a rolling mill, in which compensation is made for load current, the speed of response to a suddenly applied load is improved by making the system responsive to a measurement of the load torque or force when its rate of change is high, and to a measurement of the armature current when the rate of change of that is low. This is done by passing the load signal (from a shaft torque measurer or load cell on the rolls) through an RC high pass filter F1<SP>1</SP> and the current signal through a low pass filter F2<SP>1</SP>, the filters being complementary. To obtain a particular response characteristic the output from one filter, or from both combined, may be passed through a further RC network Cvt, Rvt1, Rvt2, the values of which are related to the armature inductance and resistance, and the required response time. The combined compensating signals are applied to a thyristor bridge motor control circuit, whose other inputs are a speed reference SP, a D. C. tachometer feedback Rus1, a damping signal via a capacitor Cus, and a linearizing feedback from the output of the thyristor bridge. In a modification of the compensating circuit Fig. 3 (not shown) the load signal is applied through a multiplier the factor of which is varied by a motor driven potentiometer responsive to the difference between the output of the multiplier and the armature current signal, both applied through low pass filters. This causes the two signals to be automatically matched in magnitude during low rates of change, but for high rates of change the load signal is passed on unchanged.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5837266A GB1178239A (en) | 1966-12-30 | 1966-12-30 | Electric motor regulating systems. |
| FR1550643D FR1550643A (en) | 1966-12-30 | 1967-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5837266A GB1178239A (en) | 1966-12-30 | 1966-12-30 | Electric motor regulating systems. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1178239A true GB1178239A (en) | 1970-01-21 |
Family
ID=10481438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5837266A Expired GB1178239A (en) | 1966-12-30 | 1966-12-30 | Electric motor regulating systems. |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1550643A (en) |
| GB (1) | GB1178239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0102623A1 (en) * | 1982-09-08 | 1984-03-14 | Imec Corporation | A current sensing circuit for motor controls |
-
1966
- 1966-12-30 GB GB5837266A patent/GB1178239A/en not_active Expired
-
1967
- 1967-12-29 FR FR1550643D patent/FR1550643A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0102623A1 (en) * | 1982-09-08 | 1984-03-14 | Imec Corporation | A current sensing circuit for motor controls |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1550643A (en) | 1968-12-20 |
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