CN110995078A - Motor driving circuit and motor driving control method - Google Patents
Motor driving circuit and motor driving control method Download PDFInfo
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- CN110995078A CN110995078A CN201911336128.4A CN201911336128A CN110995078A CN 110995078 A CN110995078 A CN 110995078A CN 201911336128 A CN201911336128 A CN 201911336128A CN 110995078 A CN110995078 A CN 110995078A
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- bridge arm
- motor
- arm circuit
- power device
- circuit
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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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC 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
- 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
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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
- 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
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- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
The present invention relates to a motor drive circuit and a motor drive control method, the motor drive circuit including: an upper bridge arm circuit on one side of the H bridge and a lower bridge arm circuit on the other side of the H bridge; the control end of the other side lower bridge arm circuit is connected with a motor control signal output pin of a control module; the output end of the other side lower bridge arm circuit is connected with one pole of the motor to be controlled; the output end of the lower bridge arm circuit on the other side is also connected with the control end of the upper bridge arm circuit on the single side; the output end of the single-side upper bridge arm circuit is connected with the other pole of the motor to be controlled; according to the motor driving circuit and the motor driving control method, the upper left bridge arm circuit is conducted by controlling the conduction of the lower right bridge arm circuit, so that the motor to be controlled is operated, the control of the direct current brush motor is realized, the pin resources of the control module for controlling the direct current brush motor are reduced, and compared with the traditional control mode of the H bridge circuit, the misconduction of the bridge arm circuits on the same side is avoided.
Description
Technical Field
The invention belongs to the technical field of motor control, and particularly relates to a motor drive circuit and a motor drive control method.
Background
The low-power brush motor is widely applied to intelligent furniture and household appliances at present. The simple electrification makes the motor operation can't satisfy the use of low-power motor in intelligent furniture, household electrical appliances, and most use occasions all require to enable the motor to rotate positively and negatively, regulate speed and detect motor current at present. In the prior art, a power device is used for driving a motor, and an MCU controls the on-off of the power device to control the rotating speed and the forward and reverse rotation of the motor. At least four power devices are needed to control the positive and negative rotation of the motor. In addition, when the power device is controlled, at least two IO ports of the MCU are required to control. The operation of the motor cannot be controlled by one IO port alone. When the motor is controlled to run or the motor is reversely rotated, the probability of the motor to be controlled is increased, and the upper power device and the lower power device are simultaneously conducted to damage a control circuit of the power devices.
Disclosure of Invention
The invention aims to provide a motor drive circuit and a motor drive control method.
In order to solve the above technical problem, the present invention provides a motor driving circuit, including: an upper bridge arm circuit on one side of the H bridge and a lower bridge arm circuit on the other side of the H bridge; the control end of the other side lower bridge arm circuit is connected with a motor control signal output pin of a control module; the output end of the other side lower bridge arm circuit is connected with one pole of the motor to be controlled; the output end of the lower bridge arm circuit on the other side is also connected with the control end of the upper bridge arm circuit on the single side; and the output end of the single-side upper bridge arm circuit is connected with the other pole of the motor to be controlled.
Further, the single-side upper bridge arm circuit is a left upper bridge arm circuit; and the other side lower bridge arm circuit is a right lower bridge arm circuit.
Further, the right lower arm circuit includes: a second control circuit; the second control circuit includes: an NPN-type power device Q2 and a diode D2; wherein the emitter of the power device Q2 is connected to ground; the base electrode of the power device Q2 is connected with a motor control signal output pin of the control module through a current-limiting resistor R4; a resistor R5 is arranged between the emitter of the power device Q2 and the base thereof; the collector of the power device Q2 is connected with one pole of the motor to be controlled; and the cathode of the diode D2 is connected with one pole of the motor to be controlled, and the anode thereof is connected with the ground.
Further, the upper left arm circuit includes: a first control circuit; wherein the first control circuit comprises: a PNP-type power device Q1 and a diode D1; the emitter of the power device Q1 is connected with a power supply VCC; the base electrode of the power device Q1 is connected with a power supply VCC through a current limiting resistor R3 and a voltage dividing resistor R1; the base electrode of the power device Q1 is also connected with the output end of the right lower bridge arm circuit through a current limiting resistor R3 and a voltage dividing resistor R2; the collector of the power device Q1 is connected with the other pole of the motor to be controlled; and the cathode of the diode D1 is connected with the power supply VCC, and the anode thereof is connected with the other pole of the motor to be controlled.
Further, the output end of the right lower bridge arm circuit is connected with the control end of the left upper bridge arm circuit through a diode D11; the anode of the diode D11 is connected with the base of the power device Q1 through a voltage dividing resistor R2 and a current limiting resistor R3; and the cathode of the diode D11 is connected to the output end of the right lower arm circuit.
Further, the motor drive circuit further includes: a right upper bridge arm circuit as an upper bridge arm circuit on the other side and a left lower bridge arm circuit as a lower bridge arm on one side; the control end of the left lower bridge arm circuit is connected with the other motor control signal output pin of the control module; the output end of the left lower bridge arm circuit is connected with one pole of a motor to be controlled; the output end of the left lower bridge arm circuit is also connected with the control end of the right upper bridge arm circuit; and the output end of the upper right bridge arm circuit is connected with the other pole of the motor to be controlled.
Further, the lower left leg circuit includes: a fourth control circuit; the fourth control circuit includes: an NPN-type power device Q4 and a diode D4; wherein the emitter of the power device Q4 is connected to ground; the base electrode of the power device Q4 is connected with a motor control signal output pin of the control module through a current-limiting resistor R14; a resistor R15 is arranged between the emitter of the power device Q4 and the base thereof; the collector of the power device Q4 is connected with one pole of the motor to be controlled; and the cathode of the diode D4 is connected with one pole of the motor to be controlled, and the anode thereof is connected with the ground.
Further, the upper right arm circuit includes: a third control circuit; wherein the third control circuit comprises: a PNP-type power device Q3 and a diode D3; the emitter of the power device Q3 is connected with a power supply VCC; the base electrode of the power device Q3 is connected with a power supply VCC through a current limiting resistor R13 and a voltage dividing resistor R11; the base electrode of the power device Q3 is also connected with the output end of the left lower bridge arm circuit through a current limiting resistor R13 and a voltage dividing resistor R12; the collector of the power device Q3 is connected with the other pole of the motor to be controlled; and the cathode of the diode D3 is connected with the power supply VCC, and the anode thereof is connected with the other pole of the motor to be controlled.
Further, the output end of the left lower bridge arm circuit is connected with the control end of the right upper bridge arm circuit through a diode D22; the anode of the diode D22 is connected with the base of the power device Q3 through a voltage dividing resistor R12 and a current limiting resistor R13; and the cathode of the diode D22 is connected with the output end of the left lower bridge arm circuit.
In another aspect, the present invention further provides a motor driving control method, including: and controlling the conduction of the upper bridge arm circuit on one side of the H bridge to enable the conduction of the lower bridge arm circuit on the other side of the H bridge to further enable the motor to operate.
Further, the single-side upper bridge arm circuit is a left upper bridge arm circuit; the other side lower bridge arm circuit is a right lower bridge arm circuit; the control end of the right lower bridge arm circuit is connected with a motor control signal output pin of a control module; the output end of the right lower bridge arm circuit is connected with one pole of a motor to be controlled; the output end of the right lower bridge arm circuit is also connected with the control end of the left upper bridge arm circuit; and the output end of the upper left bridge arm circuit is connected with the other pole of the motor to be controlled.
Further, the right lower arm circuit includes: a second control circuit; the second control circuit includes: an NPN-type power device Q2 and a diode D2; wherein the emitter of the power device Q2 is connected to ground; the base electrode of the power device Q2 is connected with a motor control signal output pin of the control module through a current-limiting resistor R4; a resistor R5 is arranged between the emitter of the power device Q2 and the base thereof; the collector of the power device Q2 is connected with one pole of the motor to be controlled; and the cathode of the diode D2 is connected with one pole of the motor to be controlled, and the anode thereof is connected with the ground.
Further, the upper left arm circuit includes: a first control circuit; wherein the first control circuit comprises: a PNP-type power device Q1 and a diode D1; the emitter of the power device Q1 is connected with a power supply VCC; the base electrode of the power device Q1 is connected with a power supply VCC through a current limiting resistor R3 and a voltage dividing resistor R1; the base electrode of the power device Q1 is also connected with the output end of the right lower bridge arm circuit through a current limiting resistor R3 and a voltage dividing resistor R2; the collector of the power device Q1 is connected with the other pole of the motor to be controlled; and the cathode of the diode D1 is connected with the power supply VCC, and the anode thereof is connected with the other pole of the motor to be controlled.
Further, the output end of the right lower bridge arm circuit is connected with the control end of the left upper bridge arm circuit through a diode D11; the anode of the diode D11 is connected with the base of the power device Q1 through a voltage dividing resistor R2 and a current limiting resistor R3; and the cathode of the diode D11 is connected to the output end of the right lower arm circuit.
Further, the single-side upper bridge arm circuit is a left upper bridge arm circuit; the other side lower bridge arm circuit is a right lower bridge arm circuit; the control end of the left lower bridge arm circuit is connected with the other motor control signal output pin of the control module; the output end of the left lower bridge arm circuit is connected with one pole of a motor to be controlled; the output end of the left lower bridge arm circuit is also connected with the control end of the right upper bridge arm circuit; and the output end of the upper right bridge arm circuit is connected with the other pole of the motor to be controlled.
Further, the lower left leg circuit includes: a fourth control circuit; the fourth control circuit includes: an NPN-type power device Q4 and a diode D4; wherein the emitter of the power device Q4 is connected to ground; the base electrode of the power device Q4 is connected with a motor control signal output pin of the control module through a current-limiting resistor R14; a resistor R15 is arranged between the emitter of the power device Q4 and the base thereof; the collector of the power device Q4 is connected with one pole of the motor to be controlled; and the cathode of the diode D4 is connected with one pole of the motor to be controlled, and the anode thereof is connected with the ground.
Further, the upper right arm circuit includes: a third control circuit; wherein the third control circuit comprises: a PNP-type power device Q3 and a diode D3; the emitter of the power device Q3 is connected with a power supply VCC; the base electrode of the power device Q3 is connected with a power supply VCC through a current limiting resistor R13 and a voltage dividing resistor R11; the base electrode of the power device Q3 is also connected with the output end of the left lower bridge arm circuit through a current limiting resistor R13, a voltage dividing resistor R12 and a diode D22; the collector of the power device Q3 is connected with the other pole of the motor to be controlled; and the cathode of the diode D3 is connected with the power supply VCC, and the anode thereof is connected with the other pole of the motor to be controlled.
Further, the output end of the left lower bridge arm circuit is connected with the control end of the right upper bridge arm circuit through a diode D22; the anode of the diode D22 is connected with the base of the power device Q3 through a voltage dividing resistor R12 and a current limiting resistor R13; and the cathode of the diode D22 is connected with the output end of the left lower bridge arm circuit.
The motor driving circuit and the motor driving control method have the advantages that the upper left bridge arm circuit is conducted by controlling the conduction of the lower right bridge arm circuit, so that the motor to be controlled is operated, the control on the direct current brush motor is realized, the pin resources outside a control module for controlling the direct current brush motor are reduced, and compared with the traditional control mode of the H-bridge circuit, the misconduction of the bridge arm circuits on the same side is avoided.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a functional block diagram of a first control circuit and a second control circuit of the motor drive circuit of the present invention;
fig. 2 is a circuit diagram of a first control circuit and a second control circuit of the motor drive circuit of the present invention;
FIG. 3 is a functional block diagram of third and fourth control circuits of the motor drive circuit of the present invention;
fig. 4 is a circuit diagram of a third control circuit and a fourth control circuit of the motor drive circuit of the present invention.
Wherein:
a first control circuit 11, a second control circuit 12, a third control circuit 13, and a fourth control circuit 14.
Detailed Description
The structure of the present invention will now be described in further detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the present embodiment 1 provides a motor drive circuit including: a left upper bridge arm circuit and a right lower bridge arm circuit; the control end of the right lower bridge arm circuit is connected with a motor control signal output pin INA of a control module; the output end of the right lower bridge arm circuit is connected with one pole of a motor to be controlled; the output end of the right lower bridge arm circuit is also connected with the control end of the left upper bridge arm circuit; and the output end of the upper left bridge arm circuit is connected with the other pole of the motor to be controlled.
Specifically, in the embodiment, the right lower bridge arm circuit is controlled to be conducted to cause the left upper bridge arm circuit to be conducted, so that the motor to be controlled is operated, the control over the direct current brush motor is realized, the resource of pins outside a control module for controlling the direct current brush motor is reduced, and compared with a traditional control mode of an H bridge circuit, the misconduction of the bridge arm circuit on the same side is avoided.
As shown in fig. 2, the output end of the right lower bridge arm circuit is connected to the control end of the left upper bridge arm circuit through a diode D11; the anode of the diode D11 is connected with the control end of the upper left bridge arm circuit; and the cathode of the diode D11 is connected to the output end of the right lower arm circuit.
Further, the right lower arm circuit includes: a second control circuit 12; the second control circuit 12 includes: an NPN-type power device Q2 and a diode D2; wherein the emitter of the power device Q2 is connected to ground; the base electrode of the power device Q2 is connected with a motor control signal output pin INA of the control module through a current-limiting resistor R4; a resistor R5 is arranged between the emitter of the power device Q2 and the base thereof; the collector of the power device Q2 is connected with one pole of the motor to be controlled; and the cathode of the diode D2 is connected with one pole of the motor to be controlled, and the anode thereof is connected with the ground.
Further, the upper left arm circuit includes: a first control circuit 11; wherein the first control circuit 11 includes: a PNP-type power device Q1 and a diode D1; the emitter of the power device Q1 is connected with a power supply VCC; the base electrode of the power device Q1 is connected with a power supply VCC through a current limiting resistor R3 and a voltage dividing resistor R1; the base electrode of the power device Q1 is also connected with the output end of the right lower bridge arm circuit through a current limiting resistor R3, a voltage dividing resistor R2 and a diode D11; the collector of the power device Q1 is connected with the other pole of the motor to be controlled; and the cathode of the diode D1 is connected with the power supply VCC, and the anode thereof is connected with the other pole of the motor to be controlled.
Specifically, after the control end of the second control circuit receives a motor control signal output pin INA signal, the NPN-type power device Q2 is turned on, the motor to be controlled and the cathode of the diode D11 are grounded, at this time, the power source VCC, the resistor R1, and the resistor R2 are turned on with ground, according to a resistor voltage division formula, the node voltage at the intersection of the resistor R1, the resistor R2, and the resistor R3 is 1/2VCC, at this time, the control end of the first control circuit 11 is equivalent to inputting an effective signal, so that the PNP-type power device Q1 is turned on, the source VCC, the power device Q1, the motor, and the power device Q2 are turned on with ground, and the motor starts to operate (in this embodiment, it is assumed that the motor is rotated forward.
Specifically, the diode D11 is used for eliminating the voltage influence of the back electromotive force of the motor on the control terminal of the first control circuit, increasing the stability of the circuit, and eliminating the motor stall caused by the back electromotive force of the motor causing the control terminal of the first control circuit to input an invalid signal.
Specifically, the current limiting resistor R3 is used to reduce the input current at the control port of the power device Q1, protect the safe environment of the power device Q1, and increase the circuit stability.
As shown in fig. 3, the motor drive circuit further includes: a right upper bridge arm circuit and a left lower bridge arm circuit; the control end of the left lower bridge arm circuit is connected with the other motor control signal output pin INB of the control module; the output end of the left lower bridge arm circuit is connected with one pole of a motor to be controlled; the output end of the left lower bridge arm circuit is also connected with the control end of the right upper bridge arm circuit; and the output end of the upper right bridge arm circuit is connected with the other pole of the motor to be controlled.
Specifically, when the motor needs to be controlled to rotate forward and backward, the upper right bridge arm circuit and the lower left bridge arm circuit are added on the basis of the upper left bridge arm circuit and the lower right bridge arm circuit, that is, the motor rotates forward or backward through the upper left bridge arm circuit and the lower right bridge arm circuit, and rotates backward or forward through the upper right bridge arm circuit and the lower left bridge arm circuit.
As shown in fig. 4, the output end of the left lower bridge arm circuit is connected to the control end of the right upper bridge arm circuit through a diode D22; the anode of the diode D22 is connected with the control end of the upper right bridge arm circuit; and the cathode of the diode D22 is connected with the output end of the left lower bridge arm circuit.
Further, the lower left leg circuit includes: a fourth control circuit 14; the fourth control circuit 14 includes: an NPN-type power device Q4 and a diode D4; wherein the emitter of the power device Q4 is connected to ground; the base electrode of the power device Q4 is connected with a motor control signal output pin INB of the control module through a current-limiting resistor R14; a resistor R15 is arranged between the emitter of the power device Q4 and the base thereof; the collector of the power device Q4 is connected with one pole of the motor to be controlled; and the cathode of the diode D4 is connected with one pole of the motor to be controlled, and the anode thereof is connected with the ground.
Further, the upper right arm circuit includes: a third control circuit 13; wherein the third control circuit 13 comprises: a PNP-type power device Q3 and a diode D3; the emitter of the power device Q3 is connected with a power supply VCC; the base electrode of the power device Q3 is connected with a power supply VCC through a current limiting resistor R13 and a voltage dividing resistor R11; the base electrode of the power device Q3 is also connected with the output end of the left lower bridge arm circuit through a current limiting resistor R13, a voltage dividing resistor R12 and a diode D22; the collector of the power device Q3 is connected with the other pole of the motor to be controlled; and the cathode of the diode D3 is connected with the power supply VCC, and the anode thereof is connected with the other pole of the motor to be controlled.
Specifically, after the control end of the fourth control circuit 14 receives the motor control signal output pin INB signal, the NPN-type power device Q4 is turned on, the motor to be controlled and the cathode of the diode D22 are grounded, the power source VCC, the resistor R11, and the resistor R12 are turned on to ground, the node voltage at the intersection of the resistor R11, the resistor R12, and the resistor R13 is 1/2VCC according to a resistor voltage division formula, the control end of the third control circuit 13 is equivalent to an input valid signal, the PNP-type power device Q3 is turned on, the source VCC, the power device Q3, the motor, and the power device Q4 are turned on to ground, and the motor starts to operate (in this embodiment, it is assumed that the motor is inverted at this time).
Specifically, the diode D22 is used for eliminating the voltage influence of the back electromotive force of the motor on the control terminal of the third control circuit, increasing the stability of the circuit, and eliminating the motor stall caused by the back electromotive force of the motor causing the control terminal of the third control circuit to input an invalid signal.
Specifically, the current limiting resistor R13 is used to reduce the input current at the control port of the power device Q3, protect the safe environment of the power device Q3, and increase the circuit stability.
Specifically, according to the technical scheme of the embodiment, the motor can realize a speed regulation function, when speed regulation and fixed speed are needed, only the INA signal and the INB signal need to be changed into the PWM waveform, the motor is driven by controlling the power device through the PWM waveform, the speed of the motor can be regulated by regulating the duty ratio of the PWM waveform, and the fixed speed can be realized by setting the accurate duty ratio.
Specifically, in the present embodiment, the power device may be a power device such as a transistor, a MOSFET, an IGBT, or the like, which controls the switch, but is not limited to the above-mentioned power device.
Example 2
On the basis of embodiment 1, the present embodiment 2 provides a motor drive control method including: and a group of two bridge arm circuits are arranged in a staggered mode, and one bridge arm circuit is controlled to be conducted, so that the other bridge arm circuit is conducted, and the motor is operated.
Specifically, the motor driving control method adopts different bridge arm staggered control modes, and controls one bridge arm circuit to be conducted to enable the other bridge arm circuit to be conducted so as to enable the motor to operate.
Further, the motor drive control method further includes: and the other two bridge arm circuits are arranged in a staggered mode, and one bridge arm circuit is controlled to be conducted to enable the other bridge arm circuit to be conducted, so that the motor can run.
Specifically, when the motor needs to be controlled to rotate forward and backward, the other two bridge arm circuits are added on the basis of the one two bridge arm circuits, namely, the motor rotates forward or backward through the staggered arrangement of the one two bridge arm circuits, and the motor rotates backward or forward through the other two bridge arm circuits.
Further, a set of two bridge arm circuits includes: a left upper bridge arm circuit and a right lower bridge arm circuit; the control end of the right lower bridge arm circuit is connected with a motor control signal output pin of a control module; the output end of the right lower bridge arm circuit is connected with one pole of a motor to be controlled; the output end of the right lower bridge arm circuit is also connected with the control end of the left upper bridge arm circuit; and the output end of the upper left bridge arm circuit is connected with the other pole of the motor to be controlled.
Further, the output end of the right lower bridge arm circuit is connected with the control end of the left upper bridge arm circuit through a diode D11; the anode of the diode D11 is connected with the control end of the upper left bridge arm circuit; the cathode of the diode D11 is connected with the output end of the right lower bridge arm circuit; the right lower leg circuit includes: a second control circuit; the second control circuit includes: an NPN-type power device Q2 and a diode D2; wherein the emitter of the power device Q2 is connected to ground; the base electrode of the power device Q2 is connected with a motor control signal output pin of the control module through a current-limiting resistor R4; a resistor R5 is arranged between the emitter of the power device Q2 and the base thereof; the collector of the power device Q2 is connected with one pole of the motor to be controlled; the cathode of the diode D2 is connected with one pole of the motor to be controlled, and the anode thereof is connected with the ground; the upper left arm circuit includes: a first control circuit; wherein the first control circuit comprises: a PNP-type power device Q1 and a diode D1; the emitter of the power device Q1 is connected with a power supply VCC; the base electrode of the power device Q1 is connected with a power supply VCC through a current limiting resistor R3 and a voltage dividing resistor R1; the base electrode of the power device Q1 is also connected with the output end of the right lower bridge arm circuit through a current limiting resistor R3, a voltage dividing resistor R2 and a diode D11; the collector of the power device Q1 is connected with the other pole of the motor to be controlled; and the cathode of the diode D1 is connected with the power supply VCC, and the anode thereof is connected with the other pole of the motor to be controlled.
Further, another set of two bridge arm circuits includes: a right upper bridge arm circuit and a left lower bridge arm circuit; the control end of the left lower bridge arm circuit is connected with the other motor control signal output pin of the control module; the output end of the left lower bridge arm circuit is connected with one pole of a motor to be controlled; the output end of the left lower bridge arm circuit is also connected with the control end of the right upper bridge arm circuit; and the output end of the upper right bridge arm circuit is connected with the other pole of the motor to be controlled.
Further, the output end of the left lower bridge arm circuit is connected with the control end of the right upper bridge arm circuit through a diode D22; the anode of the diode D22 is connected with the control end of the upper right bridge arm circuit; the cathode of the diode D22 is connected with the output end of the left lower bridge arm circuit; the lower left leg circuit includes: a fourth control circuit; the fourth control circuit includes: an NPN-type power device Q4 and a diode D4; wherein the emitter of the power device Q4 is connected to ground; the base electrode of the power device Q4 is connected with a motor control signal output pin of the control module through a current-limiting resistor R14; a resistor R15 is arranged between the emitter of the power device Q4 and the base thereof; the collector of the power device Q4 is connected with one pole of the motor to be controlled; the cathode of the diode D4 is connected with one pole of the motor to be controlled, and the anode thereof is connected with the ground; the upper right arm circuit includes: a third control circuit; wherein the third control circuit comprises: a PNP-type power device Q3 and a diode D3; the emitter of the power device Q3 is connected with a power supply VCC; the base electrode of the power device Q3 is connected with a power supply VCC through a current limiting resistor R13 and a voltage dividing resistor R11; the base electrode of the power device Q3 is also connected with the output end of the left lower bridge arm circuit through a current limiting resistor R13, a voltage dividing resistor R12 and a diode D22; the collector of the power device Q3 is connected with the other pole of the motor to be controlled; and the cathode of the diode D3 is connected with the power supply VCC, and the anode thereof is connected with the other pole of the motor to be controlled.
Specifically, the specific implementation processes of the upper left bridge arm circuit, the lower right bridge arm circuit, and the upper right bridge arm circuit and the lower left bridge arm circuit are referred to the relevant discussion of embodiment 1, and are not described herein again.
To sum up, the motor driving circuit and the motor driving control method of the embodiment cause the upper left bridge arm circuit to be conducted by controlling the conduction of the lower right bridge arm circuit, so that the motor to be controlled operates, thereby realizing the control of the dc brushed motor, reducing the pin resources of the control module for controlling the dc brushed motor, and avoiding the misconduction of the bridge arm circuits on the same side compared with the traditional control mode of the H-bridge circuit.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (18)
1. A motor drive circuit, comprising:
an upper bridge arm circuit on one side of the H bridge and a lower bridge arm circuit on the other side of the H bridge; wherein
The control end of the other side lower bridge arm circuit is connected with a motor control signal output pin of a control module;
the output end of the other side lower bridge arm circuit is connected with one pole of the motor to be controlled;
the output end of the lower bridge arm circuit on the other side is also connected with the control end of the upper bridge arm circuit on the single side; and
and the output end of the single-side upper bridge arm circuit is connected with the other pole of the motor to be controlled.
2. The motor drive circuit according to claim 1,
the single-side upper bridge arm circuit is a left upper bridge arm circuit;
and the other side lower bridge arm circuit is a right lower bridge arm circuit.
3. The motor drive circuit according to claim 2,
the right lower leg circuit includes: a second control circuit;
the second control circuit includes: an NPN-type power device Q2 and a diode D2; wherein
The emitter of the power device Q2 is connected to ground;
the base electrode of the power device Q2 is connected with a motor control signal output pin of the control module through a current-limiting resistor R4;
a resistor R5 is arranged between the emitter of the power device Q2 and the base thereof;
the collector of the power device Q2 is connected with one pole of the motor to be controlled; and
the cathode of the diode D2 is connected to one pole of the motor to be controlled, and the anode thereof is connected to ground.
4. The motor drive circuit according to claim 3,
the upper left arm circuit includes: a first control circuit; wherein
The first control circuit includes: a PNP-type power device Q1 and a diode D1; wherein
The emitter of the power device Q1 is connected with a power supply VCC;
the base electrode of the power device Q1 is connected with a power supply VCC through a current limiting resistor R3 and a voltage dividing resistor R1;
the base electrode of the power device Q1 is also connected with the output end of the right lower bridge arm circuit through a current limiting resistor R3 and a voltage dividing resistor R2;
the collector of the power device Q1 is connected with the other pole of the motor to be controlled; and
the diode D1 has its cathode connected to the power source VCC and its anode connected to the other pole of the motor to be controlled.
5. The motor drive circuit according to claim 4,
the output end of the right lower bridge arm circuit is connected with the control end of the left upper bridge arm circuit through a diode D11;
the anode of the diode D11 is connected with the base of the power device Q1 through a voltage dividing resistor R2 and a current limiting resistor R3; and
and the cathode of the diode D11 is connected with the output end of the right lower bridge arm circuit.
6. Motor drive circuit according to claims 1&2,
the motor drive circuit further includes: a right upper bridge arm circuit as an upper bridge arm circuit on the other side and a left lower bridge arm circuit as a lower bridge arm on one side; wherein
The control end of the left lower bridge arm circuit is connected with the other motor control signal output pin of the control module;
the output end of the left lower bridge arm circuit is connected with one pole of a motor to be controlled;
the output end of the left lower bridge arm circuit is also connected with the control end of the right upper bridge arm circuit; and
and the output end of the upper right bridge arm circuit is connected with the other pole of the motor to be controlled.
7. The motor drive circuit according to claim 6,
the lower left leg circuit includes: a fourth control circuit;
the fourth control circuit includes: an NPN-type power device Q4 and a diode D4; wherein
The emitter of the power device Q4 is connected to ground;
the base electrode of the power device Q4 is connected with a motor control signal output pin of the control module through a current-limiting resistor R14;
a resistor R15 is arranged between the emitter of the power device Q4 and the base thereof;
the collector of the power device Q4 is connected with one pole of the motor to be controlled; and
the cathode of the diode D4 is connected to one pole of the motor to be controlled, and the anode thereof is connected to ground.
8. The motor drive circuit according to claim 7,
the upper right arm circuit includes: a third control circuit; wherein
The third control circuit includes: a PNP-type power device Q3 and a diode D3; wherein
The emitter of the power device Q3 is connected with a power supply VCC;
the base electrode of the power device Q3 is connected with a power supply VCC through a current limiting resistor R13 and a voltage dividing resistor R11;
the base electrode of the power device Q3 is also connected with the output end of the left lower bridge arm circuit through a current limiting resistor R13 and a voltage dividing resistor R12;
the collector of the power device Q3 is connected with the other pole of the motor to be controlled; and
the diode D3 has its cathode connected to the power source VCC and its anode connected to the other pole of the motor to be controlled.
9. The motor drive circuit according to claim 8,
the output end of the left lower bridge arm circuit is connected with the control end of the right upper bridge arm circuit through a diode D22;
the anode of the diode D22 is connected with the base of the power device Q3 through a voltage dividing resistor R12 and a current limiting resistor R13; and
and the cathode of the diode D22 is connected with the output end of the left lower bridge arm circuit.
10. A motor drive control method characterized by comprising:
and controlling the conduction of the upper bridge arm circuit on one side of the H bridge to enable the conduction of the lower bridge arm circuit on the other side of the H bridge to further enable the motor to operate.
11. The motor drive control method according to claim 10,
the single-side upper bridge arm circuit is a left upper bridge arm circuit;
the other side lower bridge arm circuit is a right lower bridge arm circuit; wherein
The control end of the right lower bridge arm circuit is connected with a motor control signal output pin of a control module;
the output end of the right lower bridge arm circuit is connected with one pole of a motor to be controlled;
the output end of the right lower bridge arm circuit is also connected with the control end of the left upper bridge arm circuit; and
and the output end of the upper left bridge arm circuit is connected with the other pole of the motor to be controlled.
12. The motor drive control method according to claim 11,
the right lower leg circuit includes: a second control circuit;
the second control circuit includes: an NPN-type power device Q2 and a diode D2; wherein
The emitter of the power device Q2 is connected to ground;
the base electrode of the power device Q2 is connected with a motor control signal output pin of the control module through a current-limiting resistor R4;
a resistor R5 is arranged between the emitter of the power device Q2 and the base thereof;
the collector of the power device Q2 is connected with one pole of the motor to be controlled; and
the cathode of the diode D2 is connected to one pole of the motor to be controlled, and the anode thereof is connected to ground.
13. The motor drive control method according to claim 12,
the upper left arm circuit includes: a first control circuit; wherein
The first control circuit includes: a PNP-type power device Q1 and a diode D1; wherein
The emitter of the power device Q1 is connected with a power supply VCC;
the base electrode of the power device Q1 is connected with a power supply VCC through a current limiting resistor R3 and a voltage dividing resistor R1;
the base electrode of the power device Q1 is also connected with the output end of the right lower bridge arm circuit through a current limiting resistor R3 and a voltage dividing resistor R2;
the collector of the power device Q1 is connected with the other pole of the motor to be controlled; and
the diode D1 has its cathode connected to the power source VCC and its anode connected to the other pole of the motor to be controlled.
14. The motor drive control method according to claim 13,
the output end of the right lower bridge arm circuit is connected with the control end of the left upper bridge arm circuit through a diode D11;
the anode of the diode D11 is connected with the base of the power device Q1 through a voltage dividing resistor R2 and a current limiting resistor R3; and
and the cathode of the diode D11 is connected with the output end of the right lower bridge arm circuit.
15. The motor drive control method according to claim 10 or 11,
the single-side upper bridge arm circuit is a left upper bridge arm circuit;
the other side lower bridge arm circuit is a right lower bridge arm circuit; wherein
The control end of the left lower bridge arm circuit is connected with the other motor control signal output pin of the control module;
the output end of the left lower bridge arm circuit is connected with one pole of a motor to be controlled;
the output end of the left lower bridge arm circuit is also connected with the control end of the right upper bridge arm circuit; and
and the output end of the upper right bridge arm circuit is connected with the other pole of the motor to be controlled.
16. The motor drive control method according to claim 15,
the lower left leg circuit includes: a fourth control circuit;
the fourth control circuit includes: an NPN-type power device Q4 and a diode D4; wherein
The emitter of the power device Q4 is connected to ground;
the base electrode of the power device Q4 is connected with a motor control signal output pin of the control module through a current-limiting resistor R14;
a resistor R15 is arranged between the emitter of the power device Q4 and the base thereof;
the collector of the power device Q4 is connected with one pole of the motor to be controlled; and
the cathode of the diode D4 is connected to one pole of the motor to be controlled, and the anode thereof is connected to ground.
17. The motor drive control method according to claim 16,
the upper right arm circuit includes: a third control circuit; wherein
The third control circuit includes: a PNP-type power device Q3 and a diode D3; wherein
The emitter of the power device Q3 is connected with a power supply VCC;
the base electrode of the power device Q3 is connected with a power supply VCC through a current limiting resistor R13 and a voltage dividing resistor R11;
the base electrode of the power device Q3 is also connected with the output end of the left lower bridge arm circuit through a current limiting resistor R13, a voltage dividing resistor R12 and a diode D22;
the collector of the power device Q3 is connected with the other pole of the motor to be controlled; and
the diode D3 has its cathode connected to the power source VCC and its anode connected to the other pole of the motor to be controlled.
18. The motor drive control method according to claim 17,
the output end of the left lower bridge arm circuit is connected with the control end of the right upper bridge arm circuit through a diode D22;
the anode of the diode D22 is connected with the base of the power device Q3 through a voltage dividing resistor R12 and a current limiting resistor R13; and
and the cathode of the diode D22 is connected with the output end of the left lower bridge arm circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911336128.4A CN110995078A (en) | 2019-12-23 | 2019-12-23 | Motor driving circuit and motor driving control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911336128.4A CN110995078A (en) | 2019-12-23 | 2019-12-23 | Motor driving circuit and motor driving control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078856A (en) * | 2021-03-15 | 2021-07-06 | 天津市天波科达科技有限公司 | Circuit device and brush motor |
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| CN201336643Y (en) * | 2008-11-28 | 2009-10-28 | 上海第二工业大学 | DC motor driving circuit with protection function for input false signal |
| US20160111989A1 (en) * | 2014-10-17 | 2016-04-21 | Rohm Co., Ltd. | Fan motor driving means, driving method, and cooling device and electronic equipment using the same |
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