CN108054978B - Motor control system - Google Patents
Motor control system Download PDFInfo
- Publication number
- CN108054978B CN108054978B CN201711421991.0A CN201711421991A CN108054978B CN 108054978 B CN108054978 B CN 108054978B CN 201711421991 A CN201711421991 A CN 201711421991A CN 108054978 B CN108054978 B CN 108054978B
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- resistor
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- switch
- switching tube
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- 238000001514 detection method Methods 0.000 claims abstract description 55
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000011896 sensitive detection Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
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- 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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/02—Details of stopping control
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
The invention discloses a motor control system, which comprises a motor detection circuit, a first switch circuit, a second switch circuit, a valve holding braking circuit, a thermosensitive detection circuit and a controller, wherein the motor detection circuit is connected with the first switch circuit; the detection end of the motor detection circuit is connected with the power end of the motor, and the output end of the motor detection circuit is respectively connected with the controlled ends of the first switch circuit and the second switch circuit; the input end of the first switching circuit is connected with a power supply, the output end of the first switching circuit is connected with the opening end of the guarantee braking circuit, and the holding valve of the holding valve braking circuit is arranged on a rotor of the motor; the input end of the second switch circuit is connected with the power supply, the output end of the second switch circuit is connected with the thermosensitive detection circuit, the output end of the thermosensitive circuit is connected with the control end of the controller, and the control end of the controller is connected with the controlled end of the motor. The scheme switches the functions of temperature monitoring and rotor braking according to the use state of the motor, and is intelligent and energy-saving.
Description
Technical Field
The invention relates to the technical field of electromechanical control, in particular to a motor control system.
Background
The motor is commonly called as a motor and refers to an electromagnetic device for realizing electric energy conversion or transmission according to the law of electromagnetic induction. The driving torque is generated, and the driving torque is used as a power source of electrical appliances or various machines and has very important function in various devices. In the running process of the motor, if the motor breaks down or is in a high-temperature environment, the motor is easy to burn out, and in some equipment, after the motor stops, the rotor of the motor needs to be braked; the existing technology is not intelligent enough in realizing the functions. Therefore, how to intelligently monitor the temperature of the motor when the motor is electrified and rotated and brake the rotor of the motor when the motor is powered off is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to solve the technical problem of how to provide a motor control system which can provide over-temperature protection when a motor is started and provide braking when the motor is closed.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a motor control system comprises a motor detection circuit, a first switch circuit, a second switch circuit, a valve holding brake circuit, a thermosensitive detection circuit and a controller; the detection end of the motor detection circuit is connected with the power end of the motor, and the output end of the motor detection circuit is respectively connected with the controlled ends of the first switch circuit and the second switch circuit; the input end of the first switching circuit is connected with a power supply, the output end of the first switching circuit is connected with the opening end of the valve holding braking circuit, and the valve holding of the valve holding braking circuit is arranged on a rotor of the motor; the input end of the second switch circuit is connected with the power supply, the output end of the second switch circuit is connected with the thermosensitive detection circuit, the output end of the thermosensitive circuit is connected with the input end of the controller, and the control end of the controller is connected with the controlled end of the motor.
Preferably: the motor detection circuit comprises a first resistor and a second resistor, wherein the first end of the first resistor is connected with a power supply end of a motor, the second end of the first resistor is grounded with the first end of the second resistor, the second end of the second resistor is grounded, and the second end of the first resistor is the output end of the motor detection circuit.
Preferably: the first switch circuit comprises a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first switch tube and a second switch tube; the first end of the third resistor is connected with the second end of the first resistor, the second end of the third resistor is connected with the controlled end of the first switch tube, the output end of the first switch tube is grounded, and the fourth resistor is connected in parallel with the controlled end and the output end of the first switch tube; the input end of the first switch tube is connected with the controlled end of the second switch tube, the output end of the second switch tube is connected with the first end of the sixth resistor, the input end of the second switch tube is connected with the first end of the seventh resistor, the second end of the seventh resistor is connected with a power supply end, the first end of the fifth resistor is connected with the controlled end of the second switch tube, and the second end of the fifth resistor is connected with a high potential end.
Preferably: the second switch circuit comprises an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a third switch tube and a fourth switch tube; the first end of the eighth resistor is connected with the second end of the first resistor, the second end of the eighth resistor is connected with the controlled end of the third switching tube, the output end of the third switching tube is grounded, and two ends of the ninth resistor are connected in parallel to the controlled end and the output end of the third switching tube; the collector of the third switching tube is connected with a high potential end, the first end of the tenth resistor is connected with the controlled end of the fourth switching tube, the second end of the tenth resistor is connected with the collector of the third switching tube, the input end of the fourth switching tube is connected with a power supply, the first end of the eleventh resistor is connected with the controlled end of the fourth switching tube, and the second end of the eleventh resistor is connected with the output end of the fourth switching tube.
Preferably: the thermosensitive detection circuit comprises a thermistor, a twelfth resistor and a thirteenth resistor; the thermistor is connected with the twelfth resistor in parallel, the first end of the twelfth resistor is grounded, and the second end of the twelfth resistor is connected with the first end of the thirteenth resistor.
Preferably: the thermistor is realized by an NTC thermistor.
Preferably: the first switching tube and the third switching tube are both realized by NPN type triodes, the second switching tube is realized by NMOS tubes, and the fourth switching tube is realized by PMOS tubes.
By adopting the technical scheme, the motor control system is realized by the motor detection circuit, the first switch circuit, the second switch circuit, the valve holding brake circuit, the thermosensitive detection circuit, the detection circuit and the controller. Detecting whether the motor is electrified to operate or not through a voltage detection circuit, wherein when the motor operates, a first switching circuit is switched off, a second switching circuit is switched on, a thermosensitive circuit operates, the temperature of the motor is monitored, and the motor is controlled through a controller; when the motor is powered off and stops, the second switch circuit is cut off, the first switch circuit is switched on, the valve holding braking circuit is started, and the motor is braked. This technical scheme passes through the motor outage, carries out temperature control or excess temperature protection's control to the motor, and is intelligent effective, the power saving.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a motor control system of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of a motor control system according to the present invention.
In the figure, the motor detection circuit comprises a 1-motor detection circuit, a 2-first switch circuit, a 3-second switch circuit, a 4-holding valve brake circuit, a 5-thermal sensitive circuit, a 6-voltage division circuit, a 7-controller, an 8-motor, an RT-thermal resistor, a Q1-first switch tube, a Q2-second switch tube, a Q3-third switch tube, a Q4-fourth switch tube, a R1-first resistor, a R2-second resistor, a R3-third resistor, a R4-fourth resistor, a R5-fifth resistor, a R6-sixth resistor, a R7-seventh resistor, a R8-eighth resistor, a R9-ninth resistor, a R10-tenth resistor, a R11-eleventh resistor, a R12-twelfth resistor, and a R13-thirteenth resistor.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, the technical scheme of the present invention provides a motor control system, which includes a motor detection circuit 1, a first switch circuit 2, a second switch circuit 3, a valve holding brake circuit 4, a heat-sensitive detection circuit and a controller 7; the detection end of the motor detection circuit 1 is connected with the power end of the motor 8, and the output end of the motor detection circuit 1 is respectively connected with the controlled ends of the first switch circuit 2 and the second switch circuit; the input end of the first switching circuit 2 is connected with a power supply, the output end of the first opening circuit is connected with the opening end of the valve holding brake circuit, and the valve holding of the valve holding brake circuit 4 is arranged on a rotor of the motor 8; the input end of the second switch circuit 3 is connected with a power supply, the output end of the second switch circuit is connected with a thermosensitive detection circuit, the output end of the thermosensitive circuit 5 is connected with the control end of a controller 7, the control end of the controller 7 is connected with the controlled end of a motor 8, wherein
Motor detection circuit 1: when the motor 8 is powered on, a starting signal is sent to the first switch circuit 2 and the second switch circuit 3;
first switch circuit 2: when the opening signal is received, the valve holding brake circuit 4 is cut off to a power supply; when the opening signal is not received, the holding valve braking circuit 4 is switched on to the power supply;
second switching circuit 3: when receiving the opening signal, switching on the heat-sensitive detection circuit to the power supply; when the opening signal is not received, the thermosensitive detection circuit is cut off to the power supply;
the valve holding braking circuit 4 is used for braking the rotor of the motor 8 when being communicated with a power supply; .
A thermosensitive detection circuit for detecting the internal temperature of the motor 8 through a thermistor RT when the thermosensitive detection circuit is connected with a power supply;
and the controller 7 receives a voltage signal of a detection point of the thermosensitive detection circuit, and controls the motor 8 to stop running when the motor 8 is over-temperature.
By adopting the technical scheme, the motor control system is realized by the motor detection circuit 1, the first switch circuit 2, the second switch circuit 3, the holding valve braking circuit 4, the thermosensitive detection circuit, the detection circuit and the controller 7. Whether the motor 8 is electrified to operate or not is detected through a voltage detection circuit, when the motor 8 operates, the first switch circuit 2 is switched off, the second switch circuit 3 is switched on, the thermosensitive circuit 5 operates, the temperature of the motor 8 is monitored, and the motor 8 is controlled through the controller 7; when the motor 8 is powered off and stops, the second switch circuit 3 is switched off, the first switch circuit 2 is switched on, and the valve holding brake circuit 4 is switched on to brake the motor 8. This technical scheme passes through motor 8 outage, carries out temperature control or overtemperature prote's control to motor 8, and is intelligent effective, the power saving.
Referring to fig. 2, specifically: the motor detection circuit 1 comprises a first resistor R1 and a second resistor R2, wherein a first end of the first resistor R1 is connected with a power supply end of the motor 8, a second end of the first resistor R1 is grounded with a first end of the second resistor R2, a second end of the second resistor R2 is grounded, and a second end of the first resistor R1 is an output end of the motor detection circuit 1.
Specifically, the method comprises the following steps: the first switch circuit 2 comprises a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first switch tube Q1 and a second switch tube Q2; a first end of the third resistor R3 is connected with a second end of the first resistor R1, a second end of the third resistor R3 is connected with a controlled end of the first switch tube Q1, an output end of the first switch tube Q1 is grounded, and the fourth resistor R4 is connected in parallel with the controlled end and the output end of the first switch tube Q1; an input end of the first switch tube Q1 is connected with a controlled end of the second switch tube Q2, an output end of the second switch tube Q2 is connected with a first end of a sixth resistor R6, an input end of the second switch tube Q2 is connected with a first end of a seventh resistor R7, a second end of the seventh resistor R7 is connected with a power supply end, a first end of the fifth resistor R5 is connected with a controlled end of the second switch tube Q2, and a second end of the fifth resistor R5 is connected with a high potential end.
It should be noted that, when the motor 8 is turned on, the controlled terminal of the first switch tube Q1 is at a high potential, the first switch tube Q1 is turned on, the controlled terminal of the second switch is pulled low, the second switch tube Q2 is turned off, and the battery holding valve is not powered. When the motor 8 is turned off, the controlled end of the first switch tube Q1 is at a low potential, the first switch tube Q1 is switched off, the controlled end of the second switch tube Q2 is at a high potential, the second switch tube Q2 is switched on, and the electromagnetic holding valve is communicated with a power supply to work.
Specifically, the method comprises the following steps: the second switch circuit 3 comprises an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a third switch tube Q3 and a fourth switch tube Q4; a first end of the eighth resistor R8 is connected with a second end of the first resistor R1, a second end of the eighth resistor R8 is connected with a controlled end of the third switching tube Q3, an output end of the third switching tube Q3 is grounded, and two ends of the ninth resistor R9 are connected in parallel with the controlled end and the output end of the third switching tube Q3; the collector of the third switching tube Q3 is connected to the high potential terminal, the first terminal of the tenth resistor R10 is connected to the controlled terminal of the fourth switching tube Q4, the second terminal of the tenth resistor R10 is connected to the collector of the third switching tube Q3, the input terminal of the fourth switching tube Q4 is connected to the power supply, the first terminal of the eleventh resistor R11 is connected to the controlled terminal of the fourth switching tube Q4, and the second terminal of the eleventh resistor R11 is connected to the output terminal of the fourth switching tube Q4.
Specifically, the method comprises the following steps: the thermosensitive detection circuit comprises a thermistor RT, a twelfth resistor R12 and a thirteenth resistor R13; the thermistor RT is connected in parallel with the twelfth resistor R12, a first end of the twelfth resistor R12 is grounded, and a second end of the twelfth resistor R12 is connected to a first end of the thirteenth resistor R13.
Specifically, the method comprises the following steps: the thermistor RT is realized by an NTC thermistor.
Specifically, the method comprises the following steps: the first switching tube Q1 and the third switching tube Q3 are implemented by NPN transistors, the second switching tube Q2 is implemented by an NMOS tube, and the fourth switching tube Q4 is implemented by a PMOS tube.
The invention forms a motor control system through a motor detection circuit 1, a first switch circuit 2, a second switch circuit 3, a valve holding brake circuit 4, a thermosensitive detection circuit, a detection circuit and a controller 7. Whether the motor 8 is started or not is judged through the motor detection circuit 1, and the first switch circuit 2 and the second switch circuit 3 are respectively used for controlling the valve holding brake circuit 4 and the switch of the human detection circuit, so that the switching between two states is realized, the motor 8 is more intelligently protected, and energy and power are saved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (5)
1. A motor control system characterized by: the brake system comprises a motor detection circuit, a first switch circuit, a second switch circuit, a valve holding brake circuit, a thermosensitive detection circuit and a controller; the detection end of the motor detection circuit is connected with the power end of the motor, and the output end of the motor detection circuit is respectively connected with the controlled ends of the first switch circuit and the second switch circuit; the input end of the first switching circuit is connected with a power supply, the output end of the first switching circuit is connected with the opening end of the valve holding braking circuit, and the valve holding of the valve holding braking circuit is arranged on a rotor of the motor; the input end of the second switch circuit is connected with a power supply, the output end of the second switch circuit is connected with a thermosensitive detection circuit, the output end of the thermosensitive detection circuit is connected with the input end of the controller, the control end of the controller is connected with the controlled end of the motor, and the first switch circuit comprises a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first switch tube and a second switch tube; the first end of the third resistor is connected with the second end of the first resistor, the second end of the third resistor is connected with the controlled end of the first switching tube, the emitting electrode of the first switching tube is grounded, and the fourth resistor is connected in parallel with the controlled end of the first switching tube and the emitting electrode; the collector of the first switch tube is connected with the controlled end of the second switch tube, the output end of the second switch tube is connected with the first end of the sixth resistor, the input end of the second switch tube is connected with the first end of the seventh resistor, the second end of the seventh resistor is connected with a power supply end, the first end of the fifth resistor is connected with the controlled end of the second switch tube, and the second end of the fifth resistor is connected with a high potential end; the second switch circuit comprises an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a third switch tube and a fourth switch tube; a first end of the eighth resistor is connected with a second end of the first resistor, a second end of the eighth resistor is connected with a controlled end of the third switching tube, an emitter of the third switching tube is grounded, and two ends of the ninth resistor are connected in parallel with the controlled end and the emitter of the third switching tube; the collector of the third switching tube is connected with a high potential end, the first end of the tenth resistor is connected with the controlled end of the fourth switching tube, the second end of the tenth resistor is connected with the collector of the third switching tube, the input end of the fourth switching tube is connected with a power supply, the first end of the eleventh resistor is connected with the controlled end of the fourth switching tube, and the second end of the eleventh resistor is connected with the output end of the fourth switching tube.
2. The motor control system of claim 1, wherein: the motor detection circuit comprises a first resistor and a second resistor, wherein the first end of the first resistor is connected with a power supply end of a motor, the second end of the first resistor is connected with the first end of the second resistor, the second end of the second resistor is grounded, and the second end of the first resistor is the output end of the motor detection circuit.
3. The motor control system of claim 1, wherein: the thermosensitive detection circuit comprises a thermistor, a twelfth resistor and a thirteenth resistor; the thermistor is connected with the twelfth resistor in parallel, the first end of the twelfth resistor is grounded, and the second end of the twelfth resistor is connected with the first end of the thirteenth resistor.
4. The motor control system of claim 3, wherein: the thermistor is realized by an NTC thermistor.
5. The motor control system of claim 1, wherein: the first switching tube and the third switching tube are both realized by NPN type triodes, the second switching tube is realized by NMOS tubes, and the fourth switching tube is realized by PMOS tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711421991.0A CN108054978B (en) | 2017-12-25 | 2017-12-25 | Motor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711421991.0A CN108054978B (en) | 2017-12-25 | 2017-12-25 | Motor control system |
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| Publication Number | Publication Date |
|---|---|
| CN108054978A CN108054978A (en) | 2018-05-18 |
| CN108054978B true CN108054978B (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711421991.0A Active CN108054978B (en) | 2017-12-25 | 2017-12-25 | Motor control system |
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| Country | Link |
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| CN (1) | CN108054978B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120093B (en) * | 2018-09-17 | 2019-08-06 | 江苏金彭集团有限公司 | A kind of motor of electric motor car and its control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045907U (en) * | 1989-01-24 | 1989-10-11 | 潘荣章 | Automatic protector for electrical motor |
| JP2006280057A (en) * | 2005-03-28 | 2006-10-12 | Seiko Epson Corp | Motor control method and motor controller |
| CN202634337U (en) * | 2012-04-19 | 2012-12-26 | 扬州恒春电子有限公司 | Three-phase motor brake apparatus for electric actuator |
| CN206401436U (en) * | 2016-12-28 | 2017-08-11 | Tcl通力电子（惠州）有限公司 | Battery temperature controls circuit and electronic equipment |
-
2017
- 2017-12-25 CN CN201711421991.0A patent/CN108054978B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045907U (en) * | 1989-01-24 | 1989-10-11 | 潘荣章 | Automatic protector for electrical motor |
| JP2006280057A (en) * | 2005-03-28 | 2006-10-12 | Seiko Epson Corp | Motor control method and motor controller |
| CN202634337U (en) * | 2012-04-19 | 2012-12-26 | 扬州恒春电子有限公司 | Three-phase motor brake apparatus for electric actuator |
| CN206401436U (en) * | 2016-12-28 | 2017-08-11 | Tcl通力电子（惠州）有限公司 | Battery temperature controls circuit and electronic equipment |
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| CN108054978A (en) | 2018-05-18 |
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