CN208489807U - A kind of brshless DC motor driving control system - Google Patents
A kind of brshless DC motor driving control system Download PDFInfo
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- CN208489807U CN208489807U CN201820920584.8U CN201820920584U CN208489807U CN 208489807 U CN208489807 U CN 208489807U CN 201820920584 U CN201820920584 U CN 201820920584U CN 208489807 U CN208489807 U CN 208489807U
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Abstract
The utility model provides a kind of brshless DC motor driving control system, including power supply control mainboard, motor driving plate and brshless DC motor, metal-oxide-semiconductor Q and switching power unit are provided in power supply control mainboard, the input of switching power unit terminates 220V alternating current, the output end of switching power unit is connect with motor driving plate, metal-oxide-semiconductor Q is set between switching power unit and motor driving plate, control unit is provided in motor driving plate, drive module and protection circuit, control unit is connect with drive module, drive module is connect with brshless DC motor, protection circuit is connect with control unit and brshless DC motor respectively, protecting circuit includes under-voltage/over-voltage protection circuit and current detection circuit；The brshless DC motor driving control system controls the switch of driving plate power supply by metal-oxide-semiconductor Q, and switching speed changes up, and is provided with protection circuit, realizes overcurrent protection, over-and under-voltage protection, open-phase protection and rotation-clogging protection by protection circuit.
Description
Technical field
The utility model relates to a kind of brshless DC motor driving control systems comprising power supply control mainboard, motor drive
Movable plate and brshless DC motor.
Background technique
In motor field, brshless DC motor development is quick and is widely used, and brshless DC motor is widely used in daily
The devices such as life appliance, auto industry, aviation, consumer electronics, medical electronic, industrial automation and instrument.Brshless DC motor
Without using the commutator of mechanical structure, have the advantages that in use compared to brush motor it is very much, for example, can obtain preferably torsion
Square rotary speed property, can dynamic response, high-efficient, the service life is long, and small in size and revolving speed is high etc..In addition, brshless DC motor is more
Excellent torque and outer dimension ratio are particularly suited for it to motor own wt and size than more sensitive occasion.But
It comes with some shortcomings in terms of existing brshless DC motor drive control, for example, 1, circuit protection function is made incomplete, one
There is overcurrent, over-voltage, under-voltage, phase shortage, stall in denier, and brshless DC motor cisco unity malfunction, brshless DC motor is in operation
Once failure is easily damaged motor driving plate.2, by the switch of power source for relay control, relay control is at high cost, opens
It is slow to close speed.
Summary of the invention
For the problems of above-mentioned prior art, controlled the purpose of the utility model is to provide a kind of using metal-oxide-semiconductor
Power switch, provide overcurrent protection, over-and under-voltage protection, open-phase protection and rotation-clogging protection brshless DC motor drive control system
System.
In order to achieve the above objectives, the technical scheme adopted by the utility model is
A kind of brshless DC motor driving control system, including power supply control mainboard, motor driving plate and brushless dc
Machine is provided with metal-oxide-semiconductor Q and switching power unit, the input termination of the switching power unit in the power supply control mainboard
The output end of 220V alternating current, the switching power unit is connect with motor driving plate, provides power supply for motor driving plate, described
Metal-oxide-semiconductor Q is set between switching power unit and motor driving plate, and control unit, driving are provided in the motor driving plate
Module and protection circuit, described control unit is connect with drive module, for outputing control signals to drive module, the driving
Module is connect with brshless DC motor, and the protection circuit is connect with control unit and brshless DC motor respectively, the protection
Circuit includes under-voltage/over-voltage protection circuit and current detection circuit, and the under-voltage/over-voltage protection circuit includes resistance R27, resistance R28, electricity
R41 and capacitor C6 is hindered, the input terminal of the under-voltage/over-voltage protection circuit is connected to one end of resistance R27, one end of the resistance R28
First input interface of the other end of connection resistance R27, the resistance R28 other end and control unit connects, and the one of the resistance R41
The common end of end connection resistance R27 and resistance R28, another termination power cathode, the one end the capacitor C6 connects resistance R28 and control
The common end of first input interface of unit processed, another termination power cathode, the current detection circuit include sampling resistor R7,
Divider resistance R20, divider resistance R21, divider resistance R23 and divider resistance R24, the one end the divider resistance R24 and control are single
The second input interface connection of member, the other end are connect with divider resistance R23, another termination power cathode of divider resistance R23,
The common end of the divider resistance R23 and divider resistance R24 and the third input interface of control unit connect, the divider resistance
The connection of 4th input interface of the one end R20 and control unit, the other end are connect with sampling resistor R7, and the sampling resistor R7 is another
5th input interface of termination power cathode, the one end the divider resistance R21 and control unit connects, the other end and divider resistance
R20 is connected with the common end of the 4th input interface of control unit.
Preferably, the brshless DC motor is three-phase brushless dc motor.
Preferably, the drive module includes three P-channel metal-oxide-semiconductors and three N-channel MOS pipes, three P-channel MOS
Pipe is respectively Z1, Z3 and Z5, and three N-channel MOS pipes are respectively Z2, Z4 and Z6, the gate front end of the Z1 and control unit
The connection of first output interface, and it is serially connected with R1 between the two, the gate front end of the Z2 and the second output interface of control unit
Connection, and is serially connected with R2 between the two, and the gate front end of the Z3 and the third output interface of control unit connect, and the two it
Between be serially connected with R3, the gate front end of the Z4 and the 4th output interface of control unit connect, and are serially connected with R4 between the two, institute
5th output interface of the gate front end and control unit of stating Z5 connects, and is serially connected with R5 between the two, before the grid of the Z6
End is connect with the 6th output interface of control unit, and is serially connected with R6 between the two, and the Z1 is connected with the drain electrode of Z2 and conduct
The U phase of three-phase brushless dc motor drives end, and the Z3 is connected with the drain electrode of Z4 and the V phase as three-phase brushless dc motor is driven
Moved end, the Z5 is connected with the drain electrode of Z6 and the W phase as three-phase brushless dc motor drives end, the source of described Z1, Z3 and Z5
Pole is connected with positive pole respectively, and the public negative pole end of described Z2, Z4 and Z6 are electrically connected, and by sampling resistor R7 with
Power cathode series connection.
Preferably, the output signal of control unit is 6 road PWM sine wave signals, it is respectively used to control drive module
The conducting and shutdown of three P-channel metal-oxide-semiconductors and three N-channel MOS pipes.
Preferably, described control unit is MCU chip.
Preferably, further include wireless remote control module and the wireless receiving module that is arranged in power supply control mainboard, it is described
Wireless receiving module receives the signal of wireless remote control module transmitting.
Preferably, the wireless 433M that the wireless receiving module receives wireless remote control module transmitting controls signal, thus
The conducting and shutdown for controlling metal-oxide-semiconductor Q, to control the switch of motor driving plate power supply.
The beneficial effects of the utility model are:
One, it is provided with protection circuit in the motor driving plate of the utility model, overcurrent protection, mistake is realized by protection circuit
Under-voltage protection, open-phase protection and rotation-clogging protection are pressed, once there is brshless DC motor overcurrent, over-voltage, under-voltage, phase shortage, stall, is led to
Overprotection circuit detection threshold value signal returns to control unit shutdown control signal, to protect motor driving plate and brushless straight
Galvanic electricity machine is not damaged.
Two, the output signal of the control unit of the utility model is 6 road PWM sine wave signals, is controlled using sine wave, is solved
It has determined brshless DC motor starting, noise in operating problem.
Three, the utility model controls signal by the 433M that wireless receiving module receives wireless remote control module transmitting, thus
The conducting and shutdown of metal-oxide-semiconductor Q are controlled, to control the switch of motor driving plate power supply, switching speed is fast, at low cost.
The utility model is described in further detail with reference to the accompanying drawings and examples.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of brshless DC motor driving control system in the embodiments of the present invention.
Fig. 2 is a kind of output of the control unit of brshless DC motor driving control system in the embodiments of the present invention
Signal graph.
Fig. 3 is a kind of drive module circuit of brshless DC motor driving control system in the embodiments of the present invention
Figure.
Fig. 4 is a kind of under-voltage/over-voltage protection circuit of brshless DC motor driving control system in the embodiments of the present invention
Figure.
Fig. 5 is a kind of current detection circuit of brshless DC motor driving control system in the embodiments of the present invention
Figure.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, elaborated below with specific embodiment
The more technical details of the utility model.
As shown in Figures 1 to 5, the brshless DC motor driving control system of the present embodiment, including wireless remote control module, nothing
Line receiving module, power supply control mainboard, motor driving plate and brshless DC motor, wherein
Brshless DC motor is three-phase brushless dc motor.
Wireless remote control module is unlimited remote controler, for emitting wireless 433M control signal.
Wireless receiving module is arranged in power supply control mainboard, and wireless receiving module receives the nothing of wireless remote control module transmitting
Line 433M controls signal.
Metal-oxide-semiconductor Q and switching power unit are provided in power supply control mainboard, the input termination 220V of switching power unit is handed over
220V alternating current is converted into 12V DC electricity by galvanic electricity, and the output end of switching power unit is connect with motor driving plate, is motor
Driving plate provides power supply, and metal-oxide-semiconductor Q is set between switching power unit and motor driving plate, is received by wireless receiving module
The 433M of wireless remote control module transmitting controls signal, so that the conducting and shutdown of metal-oxide-semiconductor Q is controlled, to control motor driving plate
The switch of power supply, switching speed is fast, at low cost.
Control unit, drive module and protection circuit are provided in motor driving plate.
Control unit is MCU chip, and MCU chip is connect with drive module, and brshless DC motor on the market uses square wave
Control, starting or noise in operating are big etc., as shown in Fig. 2, the control unit of this implementation is defeated by operation internal sine wave function
6 road PWM sine wave signals are controlled so that drive module drives brshless DC motor using sine wave to drive module out, are solved
Brshless DC motor starting, noise in operating problem.
As shown in figure 3, drive module is connect with three-phase brushless dc motor, drive module include three P-channel metal-oxide-semiconductors and
Three N-channel MOS pipes, three P-channel metal-oxide-semiconductors are respectively Z1, Z3 and Z5, and three N-channel MOS pipes are respectively Z2, Z4 and Z6,
The gate front end of Z1 and the port I/O 1 of control unit connect, and are serially connected with R1 between the two, and the gate front end of Z2 and control are single
The port I/O 2 of member connects, and is serially connected with R2 between the two, and the gate front end of Z3 and the port I/O 3 of control unit connect, and two
R3 is serially connected between person, the gate front end of Z4 and the port I/O 4 of control unit connect, and are serially connected with R4 between the two, the grid of Z5
Pole front end and the port I/O 5 of control unit connect, and are serially connected with R5 between the two, the gate front end of Z6 and the I/O of control unit
Port 6 connects, and is serially connected with R6 between the two, and Z1 is connected with the drain electrode of Z2 and the U phase as three-phase brushless dc motor drives
End, Z3 is connected with the drain electrode of Z4 and the V phase as three-phase brushless dc motor drives end, and Z5 is connected with the drain electrode of Z6 and as three
The W phase of phase brushless DC motor drives end, and U phase drives end, V phase that end and W phase is driven to drive end for straight with three-phase brushless respectively
The three-phase windings coil of galvanic electricity machine is electrically connected, and the source electrode of Z1, Z3 and Z5 are connected with positive pole respectively, the public affairs of Z2, Z4 and Z6
Negative pole end is electrically connected altogether, and is connected by the sampling resistor R7 in 0.05 Europe with power cathode, the port I/O of control unit
1, the port I/O 2, the port I/O 3,6 output driving module of the port I/O 4, the port I/O 5 and the port I/O control signal.
The brshless DC motor driving control system of this implementation is connected by control unit control with three-phase brushless dc motor
The conducting and shutdown of the drive module (i.e. three P-channel metal-oxide-semiconductors and three N-channel MOS pipes) connect, so that it is straight to control three-phase brushless
The energization and power-off of galvanic electricity machine, the operation of three-phase brushless dc motor need to detect the position signal of rotor by current phase,
By controlling the conducting and shutdown of each power switch tube that connect with armature winding, thus control stator winding energization and
It powers off, under energized state, rotating excitation field is generated on stator, dragging rotor rotation, with the rotation of rotor, position sensor is not
Disconnected ground sending signal, to change the energized state of armature, so that the current direction in the conductor under same magnetic pole is constant, because
This, so that it may generating constant torque makes three-phase brushless dc motor get into smooth.
Protection circuit is connect with control unit and three-phase brushless dc motor respectively, for obtaining three-phase brushless dc motor
Sampling overcurrent parameter, over-voltage parameter, under-voltage parameter, phase shortage parameter and rotation blocking parameter when work, return to control unit, protection
Circuit includes under-voltage/over-voltage protection circuit and current detection circuit.
As shown in figure 4, under-voltage/over-voltage protection circuit includes resistance R27, resistance R28, resistance R41 and capacitor C6, owes over-voltage and protect
The input terminal of protection circuit is connected to one end of resistance R27, i.e. resistance R27 termination 12V power supply, and one end of the resistance R28 connects
The port I/O 7 of the other end of connecting resistance R27, the resistance R28 other end and control unit connects, and one end of resistance R41 connects resistance
The common end of R27 and resistance R28, another termination power cathode, the one end capacitor C6 connect the end I/O of resistance R28 and control unit
The common end of mouth 7, another termination power cathode, detecting C point voltage when the port I/O 7 of control unit is more than or lower than given
When threshold value, it is judged as over-voltage or under-voltage, shutdown 6 road PWM sine wave signals output, when C is detected in the port I/O 7 of control unit
When point voltage reaches recovery value, then start to export, VC=12*R41/(R27+R41)。
As shown in figure 5, current detection circuit includes divider resistance R20, divider resistance R21, above-mentioned sampling resistor R7, divides
The port I/O 8 of piezoresistance R23 and divider resistance R24, the one end divider resistance R24 and control unit connects, the other end and partial pressure electricity
Hinder R23 connection, another termination power cathode of divider resistance R23, the common end and control of divider resistance R23 and divider resistance R24
The port I/O 9 of unit connects, and the port I/O 10 of the one end divider resistance R20 and control unit connects, and the other end is adopted by above-mentioned
Sample resistance R7 is concatenated with power cathode, and the port I/O 11 of the one end divider resistance R21 and control unit connects, the other end and partial pressure
Resistance R20 is connected with the common end of the port I/O 10 of control unit, the port I/O 7, the port I/O 8, the port I/O 9, the port I/O 10
It is all the input port of control unit with the port I/O 11.
The overcurrent protection of brshless DC motor driving control system, open-phase protection and rotation-clogging protection working principle are as follows:
A, overcurrent protection
By flowing through the current transformation of sampling resistor R7 into voltage, then pass through R23 and R24, R20 and R21 electric resistance partial pressure, A
Point voltage is compared with B point voltage, is transferred to the current threshold of single-chip microcontroller in house software setting, when current value is more than setting
After threshold value, procedure judges are hardware overcurrent, immediately turn off the output of 6 road PWM sine wave signals, just can be extensive until re-powering
It is multiple.Overcurrent protection is all worked during entire motor control, and overcurrent protection response is fast, can timely be cut when overcurrent occurs
Disconnected output, reduces damage risk.
B, rotation-clogging protection
Rotation-clogging protection realized by detection back-emf (Ke), three-phase total current, when there is one to be more than setting in the two
After threshold value, it is judged as rotation-clogging protection, shutdown 6 road PWM sine wave signals output.If stall number is not more than setting value, motor
Restarting；Conversely, program shutdown output, restores after powering on.
Counter electromotive force calculates: a phase of three-phase brushless dc motor is connect with the probe of oscillograph, ground connects three-phase brushless direct current
A certain phase in the other two-phase of motor, rotation load, measures back emf waveform.An intermediate sine wave is taken, its peak is measured
Value Vpp and frequency f, P are motor number of pole-pairs.
Three-phase total current: detection returns to control unit by the electric current of sampling resistor R7.
C, open-phase protection
Electric current by detecting sampling resistor R7 returns to control unit and is compared, when electric current is less than the minimum of setting
Value is judged as phase shortage, and shutdown 6 road PWM sine wave signals output, if phase shortage number is not more than in setting value, motor opens again
It is dynamic；Conversely, re-powering could restore.
The brshless DC motor driving control system of the present embodiment is provided with protection circuit in motor driving plate, passes through guarantor
Protection circuit realizes overcurrent protection, over-and under-voltage protection, open-phase protection and rotation-clogging protection, once occur brshless DC motor overcurrent,
Over-voltage, under-voltage, phase shortage, stall turn off 6 road PWM sine waves letter by protecting circuit detection threshold value signal to return to control unit
Number output, so that motor driving plate and brshless DC motor be protected not to be damaged.
Although the utility model is to be described with reference to specific embodiments, this description is not meant to the utility model
It is construed as limiting.Referring to the description of the utility model, other variations of the disclosed embodiments are all for those skilled in the art
It is anticipated that, such variation should belong in appended claims limited range.
Claims (7)
1. a kind of brshless DC motor driving control system, including power supply control mainboard, motor driving plate and brshless DC motor,
It is characterized in that, be provided with metal-oxide-semiconductor Q and switching power unit in the power supply control mainboard, the switching power unit it is defeated
Enter to terminate 220V alternating current, the output end of the switching power unit is connect with motor driving plate, provides electricity for motor driving plate
Source, the metal-oxide-semiconductor Q are set between switching power unit and motor driving plate, and it is single that control is provided in the motor driving plate
Member, drive module and protection circuit, described control unit is connect with drive module, for outputing control signals to drive module,
The drive module is connect with brshless DC motor, and the protection circuit is connect with control unit and brshless DC motor respectively,
The protection circuit includes under-voltage/over-voltage protection circuit and current detection circuit, and the under-voltage/over-voltage protection circuit includes resistance R27, electricity
Resistance R28, resistance R41 and capacitor C6, the input terminal of the under-voltage/over-voltage protection circuit are connected to one end of resistance R27, the resistance
First input interface of the other end of one end connection resistance R27 of R28, the resistance R28 other end and control unit connects, the electricity
Hinder the common end of one end connection the resistance R27 and resistance R28 of R41, another termination power cathode, the one end capacitor C6 connection electricity
The common end of the first input interface of R28 and control unit, another termination power cathode are hindered, the current detection circuit includes adopting
Sample resistance R7, divider resistance R20, divider resistance R21, divider resistance R23 and the one end divider resistance R24, the divider resistance R24
It is connect with the second input interface of control unit, the other end is connect with divider resistance R23, another termination of divider resistance R23
Power cathode, the third input interface connection of the common end and control unit of the divider resistance R23 and divider resistance R24, institute
The 4th input interface for stating the one end divider resistance R20 and control unit connects, and the other end is connect with sampling resistor R7, the sampling
5th input interface of another termination power cathode of resistance R7, the one end the divider resistance R21 and control unit connects, the other end
It is connect with the common end of divider resistance R20 and the 4th input interface of control unit.
2. brshless DC motor driving control system according to claim 1, which is characterized in that the brshless DC motor
For three-phase brushless dc motor.
3. brshless DC motor driving control system according to claim 2, which is characterized in that the drive module includes
Three P-channel metal-oxide-semiconductors and three N-channel MOS pipes, three P-channel metal-oxide-semiconductors are respectively Z1, Z3 and Z5, three N-channel MOS pipes point
Not Wei Z2, Z4 and Z6, the first output interface of the gate front end of the Z1 and control unit connects, and is serially connected between the two
The gate front end of R1, the Z2 and the second output interface of control unit connect, and are serially connected with R2 between the two, the grid of the Z3
The connection of the third output interface of pole front end and control unit, and it is serially connected with R3 between the two, the gate front end of the Z4 and control
4th output interface of unit connects, and is serially connected with R4 between the two, and the 5th of the gate front end of the Z5 and control unit is defeated
Outgoing interface connection, and it is serially connected with R5 between the two, the gate front end of the Z6 and the 6th output interface of control unit connect, and
The drain electrode for being serially connected with R6, the Z1 and Z2 between the two is connected and the U phase as three-phase brushless dc motor drives end, the Z3
It is connected with the drain electrode of Z4 and the V phase as three-phase brushless dc motor drives end, the Z5 is connected with the drain electrode of Z6 and as three
The W phase of phase brushless DC motor drives end, and the source electrode of described Z1, Z3 and Z5 are connected with positive pole respectively, described Z2, Z4 and Z6
Public negative pole end be electrically connected, and connected with power cathode by the sampling resistor R7.
4. brshless DC motor driving control system according to claim 3, which is characterized in that described control unit it is defeated
Signal is 6 road PWM sine wave signals out, is respectively used to the three P-channel metal-oxide-semiconductors and three N-channel MOS pipes of control drive module
Conducting and shutdown.
5. brshless DC motor driving control system according to claim 1, which is characterized in that described control unit is
MCU chip.
6. brshless DC motor driving control system according to claim 1, which is characterized in that further include wireless remote control mould
Block and the wireless receiving module being arranged in power supply control mainboard, the wireless receiving module receive wireless remote control module transmitting
Signal.
7. brshless DC motor driving control system according to claim 6, which is characterized in that the wireless receiving module
The wireless 433M for receiving wireless remote control module transmitting controls signal, so that the conducting and shutdown of metal-oxide-semiconductor Q is controlled, to control electricity
The switch of machine driving plate power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820920584.8U CN208489807U (en) | 2018-06-14 | 2018-06-14 | A kind of brshless DC motor driving control system |
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| CN201820920584.8U CN208489807U (en) | 2018-06-14 | 2018-06-14 | A kind of brshless DC motor driving control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021012866A1 (en) * | 2019-07-25 | 2021-01-28 | 珠海格力电器股份有限公司 | Motor overvoltage protection circuit, undervoltage protection circuit, voltage protection circuit and motor |
| CN112421574A (en) * | 2020-10-26 | 2021-02-26 | 湖南全康电子科技有限公司 | Overcurrent and short circuit protection circuit and method of brushless DC motor for cleaning robot |
| CN112737425A (en) * | 2020-12-25 | 2021-04-30 | 兰州飞行控制有限责任公司 | Direct current brushless motor drive circuit based on CPLD control |
-
2018
- 2018-06-14 CN CN201820920584.8U patent/CN208489807U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021012866A1 (en) * | 2019-07-25 | 2021-01-28 | 珠海格力电器股份有限公司 | Motor overvoltage protection circuit, undervoltage protection circuit, voltage protection circuit and motor |
| CN112421574A (en) * | 2020-10-26 | 2021-02-26 | 湖南全康电子科技有限公司 | Overcurrent and short circuit protection circuit and method of brushless DC motor for cleaning robot |
| CN112737425A (en) * | 2020-12-25 | 2021-04-30 | 兰州飞行控制有限责任公司 | Direct current brushless motor drive circuit based on CPLD control |
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