CN213693521U - Direct current motor positive and negative rotation control circuit - Google Patents
Direct current motor positive and negative rotation control circuit Download PDFInfo
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- CN213693521U CN213693521U CN202022083807.XU CN202022083807U CN213693521U CN 213693521 U CN213693521 U CN 213693521U CN 202022083807 U CN202022083807 U CN 202022083807U CN 213693521 U CN213693521 U CN 213693521U
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Abstract
The utility model provides a direct current motor is control circuit that is just reversing, including direct current motor, host system, signal processing module, H bridge type power drive circuit module, control module signal processing module H bridge type power drive circuit module and direct current motor electricity in proper order is connected, the beneficial effects of the utility model are that: the switch enabling signal and the rotation enabling signal output by the main control module are converted and amplified by the signal processing module and then output driving signals, and the driving signals control the H-bridge type power driving circuit module to further enable the direct current motor to rotate forwards, reversely and brake.
Description
Technical Field
The utility model relates to a control circuit is just reversing, especially involves direct current motor's control circuit is just reversing.
Background
A dc motor refers to a rotating electrical machine that can convert dc electrical energy into mechanical energy or vice versa. The direct current motor can realize the interconversion of direct current electric energy and mechanical energy. When the direct current motor operates, electric energy is converted into mechanical energy, the rotation of the direct current motor is controlled through a driving circuit, and the direct current motor is required to rotate forwards and backwards sometimes. At present, direct current motors on the market are not high in reliability and poor in power performance, relays are still main components, and the relays are abraded due to forward and reverse rotation switching, so that the service life is shortened, and the maintenance cost and the workload are increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the not enough of above-mentioned prior art, provide a direct current motor is control circuit just reversing, solved with high costs, the reliability poor, life weak point and the problem of power.
In order to achieve the above object, the utility model provides a following technical scheme:
a direct current motor positive and negative rotation control circuit includes: the direct current motor also comprises a main control module, a signal processing module and an H-bridge type power driving circuit module, wherein the main control module, the signal processing module, the H-bridge type power driving circuit module and the direct current motor are electrically connected in sequence;
the main control module is used for outputting a switch enabling signal and a rotation enabling signal;
the signal processing module is used for converting the switch enabling signal and the rotation enabling signal output by the control module into a driving signal for driving the direct current motor;
the H-bridge type power driving circuit module is used for driving the direct current motor to rotate forwards, reversely and brake.
As a further improvement of the utility model, the signal processing module includes signal conversion module and signal amplification module, the signal conversion module be used for with switch enable signal with rotation signal conversion is the drive signal of direct current motor work, the signal amplification module be used for with drive signal after the signal conversion module conversion is enlargied, the output of signal conversion module with the input of signal amplification module links to each other.
As a further improvement of the present invention, the driving signal output by the signal conversion module includes a first control signal, a second control signal, a third control signal and a fourth control signal.
As the utility model discloses a further improvement, H bridge type power drive circuit module includes first bridge arm and second bridge arm, establish first sub switch unit and second sub switch unit in proper order in the cluster on the first bridge arm, establish third sub switch unit and fourth sub switch unit in the cluster in proper order on the second bridge arm.
As a further improvement of the present invention, the first sub-switch unit and the connection point of the second sub-switch unit are connected to the first interface of the dc motor, the third sub-switch unit and the connection point of the fourth sub-switch unit are connected to the second interface of the dc motor, and a small capacitor is connected in parallel to both ends of the dc motor, and is used for filtering the high peak value of the higher harmonic wave and reducing the voltage.
As a further improvement of the present invention, the first sub-switch unit, the second sub-switch unit, the third sub-switch unit and the fourth sub-switch unit all adopt N-channel power MOS transistors.
As the utility model discloses a further improvement, every N channel power MOS pipe meets the diode, plays the afterflow effect for components and parts in the protection circuit are not damaged.
As a further improvement of the present invention, the driving signal output end of the signal amplification module is connected to the control end of the H-bridge power driving circuit module.
The beneficial effects of the utility model are that, through adopting host system, the direct current motor positive and negative control circuit of signal processing module and H bridge type power drive circuit module, make host system when receiving direct current motor rotation signal, output rotation enable signal and switch enable signal and send to signal processing module, carry out the conversion through signal processing module and amplify the back with drive signal transmission to H bridge type power drive circuit module, and then make direct current motor according to host system's signal control direct current motor's corotation, reversal or braking. The direct current motor control circuit can meet the requirements of various direct current motors, saves the cost to a certain extent, and can achieve high working efficiency, high accuracy and lower power consumption.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below.
Fig. 1 is a structural diagram of a forward/reverse rotation control circuit of a dc motor according to the present invention;
fig. 2 is a structural diagram of an H-bridge power driving circuit module according to an embodiment of the present invention.
Detailed Description
The following detailed description will be made with reference to the accompanying drawings.
As shown in fig. 1, the forward and reverse rotation control circuit of a dc motor includes: the direct current motor driving device comprises a main control module, a signal processing module H bridge type power driving circuit module and a direct current motor, wherein the main control module, the signal processing module H bridge type power driving circuit module and the direct current motor are sequentially and electrically connected.
The main control module is used for outputting a rotation enabling signal and a switch enabling signal.
Specifically, the main control module may include but is not limited to a programmable control chip such as a single chip microcomputer and a micro main control unit.
The signal processing module is used for converting the received rotation enabling signal and the switch enabling signal into a driving signal for driving the direct current motor. The signal processing module comprises a signal conversion module and a signal amplification module, the signal processing module is used for converting the switch enabling signal and the rotation signal into a driving signal for driving the direct current motor to work, the signal amplification module is used for amplifying the driving signal converted by the signal conversion module, and the output end of the signal conversion module is connected with the input end of the signal amplification module.
Furthermore, the driving signal output by the signal amplification module includes a first control signal, a second control signal, a third control signal and a fourth control signal.
Specifically, the control signal of the main control module is converted and amplified by the signal conversion module and the signal amplification module of the signal processing module to generate a driving signal for controlling the H-bridge power driving circuit module.
The H-bridge type power driving circuit module is used for driving the direct current motor to work and braking the direct current motor in forward rotation, reverse rotation and reverse rotation. The H-bridge type power driving circuit module comprises a first bridge arm and a second bridge arm. The first bridge arm is provided with a first sub-switch unit and a second sub-switch unit in series, and the second bridge arm is provided with a third sub-switch unit and a fourth sub-switch unit in series. The connection point of the first control sub-switch unit and the second sub-switch unit is a first interface connected with the direct current motor, and the connection point of the third sub-switch unit and the fourth sub-switch unit is a second interface connected with the direct current motor. And a small capacitor is connected in parallel at two ends of the direct current motor and is used for filtering higher harmonic waves and reducing the high peak value of voltage.
Furthermore, the first sub-switch unit, the second sub-switch unit, the third sub-switch unit and the fourth sub-switch unit of the H-bridge power driving circuit module can adopt MOS transistors with large input impedance, high switching speed and no secondary breakdown phenomenon, and all adopt N-channel power MOS transistors, and have the advantages of good frequency response of carriers, large transconductance, capability of increasing conduction current, reducing conduction resistance, reducing area, being capable of achieving cost reduction and the like. And the driving signal of the signal processing module is connected with the control end of the H-bridge type power driving circuit module. Specifically, the H-bridge power driving circuit module includes four diodes connected in parallel with the four N-channel power MOS transistors, and provides a freewheeling circuit for the coil winding. The fly-wheel diode is connected with the small capacitor of the motor in parallel, and is used for reducing the peak voltage generated by the motor of the inductive component, so that the inductive component can work stably.
When the direct current motor rotates forwards, the main control module outputs a forward rotation signal of the rotation enabling signal and transmits the forward rotation signal to the signal conversion module, the signal conversion module converts the forward rotation signal and outputs a forward rotation driving signal, the signal amplification module amplifies the forward rotation driving signal and transmits the amplified forward rotation driving signal to the H-bridge power driving circuit module, the H-bridge power driving circuit module controls the first sub-switch unit and the fourth sub-switch unit to be switched on, the third sub-switch unit and the fourth sub-switch unit are switched off, and the direct current motor rotates forwards, namely, performs reverse rotation braking.
When the direct current motor rotates reversely, the main control module outputs a reverse rotation signal of the rotation enabling signal and transmits the reverse rotation signal to the signal conversion module, the signal conversion module converts the reverse rotation signal and outputs a reverse rotation driving signal, the signal amplification module amplifies the reverse rotation driving signal and then transmits the amplified reverse rotation driving signal to the H bridge type power driving circuit module, the H bridge type power driving circuit module controls the third sub-switch unit and the fourth sub-switch unit to be switched on, the first sub-switch unit and the second sub-switch unit are switched off, and the direct current motor rotates reversely, namely, the direct current motor brakes in a forward rotation mode.
When the direct current motor stops rotating, the main control module outputs a switch enabling signal, the signal processing module sends the output switch enabling signal to the H-bridge type power driving circuit module through the driving signal which is converted and amplified by the signal conversion module and the signal amplification module, and then the direct current motor stops rotating.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (8)
1. A direct current motor positive and negative rotation control circuit includes: direct current motor, its characterized in that still includes: the direct current motor driving circuit comprises a main control module, a signal processing module and an H-bridge type power driving circuit module, wherein the main control module, the signal processing module, the H-bridge type power driving circuit module and the direct current motor are electrically connected in sequence;
the main control module is used for outputting a switch enabling signal and a rotation enabling signal;
the signal processing module is used for converting the switch enabling signal and the rotation enabling signal into a driving signal for driving the direct current motor to work;
the H-bridge type power driving circuit module is used for driving the direct current motor to rotate forwards, reversely and brake.
2. The direct current motor forward and reverse rotation control circuit according to claim 1, wherein the signal processing module includes a signal conversion module and a signal amplification module, the signal conversion module is configured to convert the switch enable signal and the rotation signal into a driving signal for driving the direct current motor to operate, the signal amplification module is configured to amplify the driving signal converted by the signal conversion module, and an output end of the signal conversion module is connected to an input end of the signal amplification module.
3. The direct current motor forward and reverse rotation control circuit according to claim 2, wherein the driving signal output by the signal conversion module comprises a first control signal, a second control signal, a third control signal and a fourth control signal.
4. The direct current motor forward and reverse rotation control circuit according to claim 1, wherein the H-bridge power driving circuit module comprises a first bridge arm and a second bridge arm, a first sub-switch unit and a second sub-switch unit are sequentially connected in series on the first bridge arm, and a third sub-switch unit and a fourth sub-switch unit are sequentially connected in series on the second bridge arm.
5. The direct current motor positive and negative rotation control circuit according to claim 4, wherein a connection point of the first sub-switch unit and the second sub-switch unit is a first interface connected with the direct current motor, a connection point of the third sub-switch unit and the fourth sub-switch unit is a second interface connected with the direct current motor, a small capacitor is connected in parallel with two ends of the direct current motor, and the small capacitor is used for filtering higher harmonics and reducing high peak value of voltage.
6. The direct current motor positive and negative rotation control circuit according to claim 5, wherein the first sub-switch unit, the second sub-switch unit, the third sub-switch unit and the fourth sub-switch unit all adopt N-channel power MOS transistors.
7. The direct current motor positive and negative rotation control circuit of claim 6, wherein each N-channel power MOS transistor is connected in parallel with a diode to play a role of freewheeling for protecting components in the circuit from being damaged.
8. The direct current motor positive and negative rotation control circuit according to claim 2, wherein the driving signal output end of the signal amplification module is connected with the control end of the H-bridge power driving circuit module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022083807.XU CN213693521U (en) | 2020-09-22 | 2020-09-22 | Direct current motor positive and negative rotation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022083807.XU CN213693521U (en) | 2020-09-22 | 2020-09-22 | Direct current motor positive and negative rotation control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213693521U true CN213693521U (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022083807.XU Active CN213693521U (en) | 2020-09-22 | 2020-09-22 | Direct current motor positive and negative rotation control circuit |
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|---|---|
| CN (1) | CN213693521U (en) |
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- 2020-09-22 CN CN202022083807.XU patent/CN213693521U/en active Active
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