CN110518839A - The bldc controller of logic-based device - Google Patents
The bldc controller of logic-based device Download PDFInfo
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- CN110518839A CN110518839A CN201910943332.6A CN201910943332A CN110518839A CN 110518839 A CN110518839 A CN 110518839A CN 201910943332 A CN201910943332 A CN 201910943332A CN 110518839 A CN110518839 A CN 110518839A
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- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 7
- 239000003381 stabilizer Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
Abstract
The invention discloses a kind of bldc controllers of logic-based device comprising has H-bridge drive circuit, Hall sensor, Schmidt trigger and power supply module, H-bridge drive circuit is connect with brshless DC motor, to realize the driving and commutation of DC brushless motor;Hall sensor is mounted on brshless DC motor, to detect the rotor-position of DC brushless motor and export commutation signal;Schmidt trigger receives the commutation signal of Hall sensor output, and controls the conducting of driving power pipe and cut-off of H-bridge drive circuit;Power supply module is connect with H-bridge drive circuit, Hall sensor, Schmidt trigger respectively.It is matched by logical device Schmidt trigger with Hall sensor, realize driving and the commutation control of brshless DC motor, compared to MCU, DSP or dedicated motor chip is used, logical device Schmidt trigger is cheap, to reduce the cost of brushless DC motor control system.
Description
Technical field
The present invention relates to motor control technology field more particularly to a kind of bldc controllers of logic-based device.
Background technique
As the development of novel permanent magnetic material, microelectronics, automatic control technology and power electronic technique, especially power are opened
The development of device is closed, the development of brshless DC motor (BrushlessDirectCurrentMotor, abbreviation BLDC) achieves huge
Quantum leap.In past 10 years, brshless DC motor has become in the market leading, but brshless DC motor
Driver must all be matched, be also about the drive control device of brshless DC motor at present it is various, in the market about motor
Probably there are two types of types for drive control device, and one is currently based on MCU, DSP etc. there is the central control unit of programing function to match
It closes power device and realizes motor driven;One is be used as control using the motor special chip for being integrated with software programming function and drive
Moving cell, cooperation power device realize motor driven.
However, DSP etc. has the central control unit or motor special chip of programing function whether based on MCU,
Its price is all very high, and the cost so as to cause entire brushless DC motor control system is very high, is unfavorable for motor control
The development of industry processed.In addition, DC brushless motor in starting and operating, due to equipment fault or loads violent variation, it is past
Toward the case where there is current of electric and substantially exceed rated value, burnt so as to cause the power driver module or motor of motor.
Summary of the invention
Technical problem to be solved by the present invention lies in a kind of bldc controller of logic-based device is provided, pass through logic
Device is matched with Hall sensor, and driving and the commutation control of brshless DC motor may be implemented.
In order to solve the above technical problems, the present invention uses technical solution as described below:
A kind of bldc controller of logic-based device comprising have H-bridge drive circuit, Hall sensor, Schmidt's touching
Hair device and power supply module, the H-bridge drive circuit are connect with brshless DC motor, to realize the driving of DC brushless motor with
Commutation;The Hall sensor is mounted on the brshless DC motor, to detect the rotor-position of DC brushless motor simultaneously
Export commutation signal;The Schmidt trigger receives the commutation signal of Hall sensor output, and according to the commutation signal
Control the conducting of driving power pipe and cut-off of the H-bridge drive circuit;The power supply module respectively with the H-bridge drive circuit,
Hall sensor, Schmidt trigger connection are the H-bridge drive circuit, Hall sensor, Schmidt trigger power supply.
Preferably, the power supply module includes the first DC voltage-stabilizing module, the second DC voltage-stabilizing module and third direct current
Voltage stabilizing module, the first DC voltage-stabilizing module comprising have resistance-capacitance depressurization unit, full-bridge rectification unit, filter unit and steady
Unit is pressed, the input terminal of the first DC voltage-stabilizing module is electrically connected with city, for being depressured, being rectified to alternating current, filtered
And steady pressure treatment, and export the first stable DC voltage in output end and provide operating voltage for the H-bridge drive circuit;It is described
Second DC voltage-stabilizing module, input terminal are connect with the output end of the first DC voltage-stabilizing module, for straight to described first
Galvanic electricity pressure is depressured, is filtered and steady pressure treatment, and exporting the second stable DC voltage in output end is the hall sensing
Device and Schmidt trigger provide operating voltage;The third DC voltage-stabilizing module, input terminal and second DC voltage-stabilizing
The output end of module connects, and for carrying out pressure stabilizing, filtering and voltage division processing to second DC voltage, and exports in output end
Stable third DC voltage provides bias voltage for Schmidt trigger, and the Schmidt trigger is according to the bias voltage
Control the conducting of enabled switching tube and cut-off of the H-bridge drive circuit.
Preferably, the mains input side of the DC brushless motor is provided with a clamp circuit.
Preferably, the clamp circuit include double diode D3 and double diode D4, the double diode D3 with it is described
The power input positive terminal of DC brushless motor connects, and the power input of the double diode D4 and the DC brushless motor is negative
Extreme connection.
Preferably, the double diode D3 and double diode D4 uses BAS28 model double diode.
Preferably, the Schmidt trigger is 6 channel Schmidt triggers of HEF40106 model.
Preferably, the H-bridge drive circuit includes triode Q1, triode Q2, triode Q3, triode Q4, three poles
Pipe Q5, triode Q6, resistance R18 and resistance R19, the base stage of the triode Q2, triode Q3, triode Q5 and triode Q6
It is connect with the Schmidt trigger, the emitter ground connection of triode Q2, the collector of triode Q2 and the base of triode Q1
The base stage of pole connection, triode Q1 is connect by resistance R19 with the power supply module, the emitter of triode Q1 and the power supply
Module connection, the collector of triode Q1 and the power input positive terminal of the DC brushless motor and the current collection of triode Q3
Pole connection, the emitter ground connection of triode Q3, the emitter ground connection of triode Q5, the collector of triode Q5 is with triode Q4's
The base stage of base stage connection, triode Q4 is connect by resistance R18 with the power supply module, the emitter of triode Q4 and the confession
Electric module connection, the collector of triode Q4 and the power input negative pole end of the DC brushless motor and the collection of triode Q6
Electrode connection, the emitter ground connection of triode Q6.
Preferably, the H-bridge drive circuit include resistance R10, resistance R11, resistance R12, resistance R13, resistance R17 and
Resistance R20, the resistance R10 are connected between the base stage of triode Q1 and the collector of triode Q2, the resistance R11 connection
Between the base stage and the Schmidt trigger of triode Q3, the resistance R12 is connected to base stage and three poles of triode Q4
Between the collector of pipe Q5, the resistance R13 is connected between the base stage of triode Q6 and the Schmidt trigger, the electricity
Resistance R17 is connected between the base stage of triode Q5 and the Schmidt trigger, and the resistance R20 is connected to the base of triode Q2
Between pole and the Schmidt trigger.
Preferably, the H-bridge drive circuit includes triode Q1, triode Q2, triode Q3, triode Q4, three poles
Pipe Q5, triode Q6, triode Q7, triode Q8, resistance R10, resistance R11, resistance R12, resistance R13, resistance R16, resistance
R17, resistance R18, resistance R19, resistance R20 and resistance R21, the triode Q2 base stage by resistance R20 with it is described apply it is close
Special trigger connection, the emitter ground connection of triode Q2, the collector of triode Q2 are steady by resistance R19 and first direct current
Die block connection;The base stage of triode Q1 is connect by resistance R10 with the collector of triode Q2, the emitter of triode Q1 and
The power input positive terminal of first DC voltage-stabilizing module connection, the collector of triode Q1 and the DC brushless motor with
And the collector connection of triode Q3;The emitter of triode Q3 is grounded, and the base stage of triode Q3 is applied by resistance R11 with described
Schmitt trigger connection;The collector of triode Q7 is connect with the base stage of triode Q3, the emitter ground connection of triode Q7, three poles
The base stage of pipe Q7 is connect by resistance R21 with the Schmidt trigger, and the base stage of the triode Q5 passes through resistance R17 and institute
Schmidt trigger connection, the emitter ground connection of triode Q5 are stated, the collector of triode Q5 passes through resistance R18 and described first
The connection of DC voltage-stabilizing module;The base stage of triode Q4 is connect by resistance R12 with the collector of triode Q5, the hair of triode Q4
Emitter-base bandgap grading is connect with the first DC voltage-stabilizing module, and the power input of the collector of triode Q4 and the DC brushless motor is negative
Extreme and triode Q6 collector connection;The emitter of triode Q6 is grounded, the base stage of triode Q6 by resistance R13 with
The Schmidt trigger connection;The collector of triode Q8 is connect with the base stage of triode Q6, and the emitter of triode Q8 connects
The base stage on ground, triode Q8 is connect by resistance R16 with the Schmidt trigger.
The beneficial technical effect of the present invention lies in: the bldc controller of above-mentioned logic-based device, Hall sensor installation
On the brshless DC motor, to detect the rotor-position of DC brushless motor and export commutation signal, schmidt trigger
Device receives the commutation signal and controls the conducting of driving power pipe and cut-off of the H-bridge drive circuit, is applied by logical device
Schmitt trigger is matched with Hall sensor, realizes driving and the commutation control of brshless DC motor, compared to using MCU,
DSP or dedicated motor chip, logical device Schmidt trigger is cheap, to reduce brshless DC motor control system
The cost of system.
Detailed description of the invention
Fig. 1 is the circuit diagram of the bldc controller of logic-based device of the invention.
Specific embodiment
To make those skilled in the art that the object, technical solutions and advantages of the present invention be more clearly understood, with
Under the present invention is further elaborated in conjunction with the accompanying drawings and embodiments.
As shown in Figure 1, in an embodiment of the invention, the bldc controller of logic-based device includes the driving of H bridge
Circuit 10, Hall sensor U3, Schmidt trigger U1 and power supply module 20.The H-bridge drive circuit 10 and brushless dc
Machine connection, to realize the driving and commutation of DC brushless motor;The Hall sensor U3 is mounted on the brushless dc
On machine, to detect the rotor-position of DC brushless motor and export commutation signal;The Schmidt trigger U1 receives Hall
The commutation signal of sensor U3 output, and led according to the driving power pipe that the commutation signal controls the H-bridge drive circuit 10
Logical and cut-off;The power supply module 20 connects with the H-bridge drive circuit 10, Hall sensor U3, Schmidt trigger U1 respectively
It connects, is the H-bridge drive circuit 10, Hall sensor U3, Schmidt trigger U1 power supply.
The H-bridge drive circuit 10 include triode Q1, triode Q2, triode Q3, triode Q4, triode Q5,
Triode Q6, resistance R18 and resistance R19, triode Q1, triode Q2, triode Q3, triode Q4, triode Q5, triode
Q6 is the driving power pipe of motor, triode Q1, triode Q2, triode Q3, triode Q4, triode Q5, triode Q6, electricity
Hinder the path drives that R18 and resistance R19 building H bridge realizes motor.The Schmidt trigger U1 is core of the invention control
Unit is output and input reversely in logic, is inputted as high level then using 6 channel Schmidt triggers of HEF40106 model
Output is low level, inputs that then to export for low level be high level.Hall sensor U3 is a polarity HALL chip, the touching of the pole N
Hair output high level, the pole S triggering output low level.
As shown in Figure 1,1A is high level (being indicated below with H), and 1Y, 2A are if Hall sensor U3 output is high level
Low level (indicates with L) below, 2Y H, while being L, 3Y H by 3A known to the peripheral circuit of double diode D5, because of 2Y
For H, so 6A is H, 6Y L, triode Q1, triode Q2, triode Q6 are connected according to power driving circuit, triode
Q3, triode Q4, triode Q5 cut-off, electric current by M1 (the power input positive terminal of DC brushless motor) flow to M2 (direct current without
The power input negative pole end of brush motor), motor rotates forward.When motor, which turns over current magnetic field, corresponds to halfth area, Hall sensor U3
Because the variation of rotor magnetic region mutates, output is L, 1A L, 1Y, 2A H, 2Y L, while by the outer of double diode D5
Enclosing 3A known to circuit is H, 3Y L because 2Y is L, 6A L, 6Y H, according to power driving circuit triode Q3,
Triode Q4, triode Q5 conducting, triode Q1, triode Q2, triode Q6 cut-off, electric current flow to M1 by M2, motor reversal,
To realize commutation.Reciprocation cycle, motor ceaselessly commutate according to the realization of the output mutation of Hall sensor U3, and motor is normal
Operation.
The bldc controller of logic-based device in the present embodiment, passes through logical device Schmidt trigger U1 and Hall
Sensor U3 is matched, and realizes driving and the commutation control of brshless DC motor, compared to using MCU, DSP or dedicated motor
Chip, logical device Schmidt trigger U1 is cheap, to reduce the cost of brushless DC motor control system.
As shown in Figure 1, in a preferred embodiment of the invention, the H-bridge drive circuit 10 further includes having resistance
R10, resistance R11, resistance R12, resistance R13, resistance R17 and resistance R20 flow through the triode Q1, triode for limiting
The electric current of Q2, triode Q3, triode Q4, triode Q5, triode Q6 adjust motor to change the electric current by motor
Speed.
As shown in Figure 1, in a preferred embodiment of the invention, the mains input side of the DC brushless motor is arranged
There is a clamp circuit, which includes the double diode D3 and double diode D4 of BAS28 model.The double diode D3
It is connect with the power input positive terminal of the DC brushless motor, the power supply of the double diode D4 and the DC brushless motor
Negative pole end connection is inputted, the spike of motor commutation and emergency stop generation is absorbed, to the current potential of the mains input side of DC brushless motor
Clamper is carried out, to realize the protection of circuit.
As shown in Figure 1, in a preferred embodiment of the invention, the H-bridge drive circuit 10 includes triode Q7
Enabled switching tube with triode Q8, triode Q7 and triode Q8 as the H-bridge drive circuit 10, it is described for controlling
10 on-off of H-bridge drive circuit.The power supply module 20 includes the first DC voltage-stabilizing module 21,22 and of the second DC voltage-stabilizing module
Third DC voltage-stabilizing module 23.
The first DC voltage-stabilizing module 21 includes resistance-capacitance depressurization unit, full-bridge rectification unit, filter unit and pressure stabilizing
Unit, the resistance-capacitance depressurization unit include capacitor C1, resistance R4, resistance R5 and resistance R6, and the full-bridge rectification unit includes whole
Bridge D2 is flowed, filter unit includes electrolytic capacitor C2, and voltage regulation unit includes diode D1, and mains AC AC passes through capacitor C1, electricity
R4, resistance R5 and resistance R6 resistance-capacitance depressurization are hindered, then by rectifier bridge D2 full-bridge rectification, by electrolytic capacitor C2 filtering and diode
It is that the H-bridge drive circuit 10 provides operating voltage that D1 pressure stabilizing, which obtains a steady dc voltage VDC, adjusts the appearance of capacitor C1
Value size can change the electric current of VDC, adjust the voltage swing of the adjustable VDC of parameter of diode D1.
The second DC voltage-stabilizing module 22 includes resistance R1, resistance R8, capacitor C3 and voltage-stabiliser tube ZD1, and described second is straight
Stream Voltage stabilizing module 22 is connect with the output end of the first DC voltage-stabilizing module 21, resistance R1, resistance R8 and voltage-stabiliser tube ZD1 building
One voltage regulator circuit is depressured DC voltage VDC, after steady pressure treatment, and stable 15V DC voltage VCC is exported in output end
It is that the Hall sensor U3 and Schmidt trigger U1 provide operating voltage.
The third DC voltage-stabilizing module 23 includes that resistance R9, resistance R14, capacitor C8 and voltage-stabiliser tube ZD2, the third are straight
Stream Voltage stabilizing module 23 is connect with the output end of the second DC voltage-stabilizing module 22, resistance R9, resistance R14 and voltage-stabiliser tube ZD2 structure
After a voltage regulator circuit is built to DC voltage VCC progress pressure stabilizing, voltage division processing, a steady dc voltage is exported in output end
There is provided switch enable signal of the bias voltage as H-bridge drive circuit 10 for the end the PIN11 5A of Hall sensor U3, it is described apply it is close
Special trigger U3 controls enabled switching tube (the triode Q7, triode of the H-bridge drive circuit 10 according to the bias voltage
Q8) conducting and cut-off.
When system electrification, the first DC voltage-stabilizing module 21 provides a system to the DC voltage VDC of 30V, the second DC voltage-stabilizing
Module 22 provides the DC voltage VCC of 15V to Hall sensor U3 and Schmidt trigger U1, since 15V DC voltage VCC fills
Foot, 5A H, 5Y L, at this time Hall sensor U3 output can be according to the position output 15V high level or the low electricity of 0V when stopping
It is flat.If Hall sensor U3 output is high level, 1A is high level (being indicated below with H), and 1Y, 2A are that low level (uses L table below
Show), 2Y H, while being L, 3Y H by 3A known to the peripheral circuit of double diode D5, because 2Y is H, 6A H, 6Y
For L, triode Q1, triode Q2, triode Q6 conducting, triode Q3, triode Q4, three poles according to power driving circuit
Pipe Q5 cut-off, electric current flow to the M2 (power input of DC brushless motor by M1 (the power input positive terminal of DC brushless motor)
Negative pole end), motor rotates forward.When motor, which turns over current magnetic field, corresponds to halfth area, change of the Hall sensor U3 because of rotor magnetic region
Changing the output that mutates is L, 1A L, 1Y, 2A H, 2Y L, while being H by 3A known to the peripheral circuit of double diode D5,
3Y is L, because 2Y is L, 6A L, 6Y H, triode Q3, triode Q4, triode according to power driving circuit
Q5 conducting, triode Q1, triode Q2, triode Q6 cut-off, electric current flows to M1, motor reversal by M2, to realize commutation.It is past
Multiple circulation, motor ceaselessly commutate according to the realization of the output mutation of Hall sensor U3, and motor is normally run.
In operational process when high current or stall occur for motor, the big electricity of moment can be generated in corresponding power tube
Stream, and whole system is using resistance-capacitance depressurization, when generating high current suddenly, the voltage of DC voltage VDC can suddenly substantially
Degree reduce, when voltage-stabiliser tube ZD2 can not breakdown or resistance R14 partial pressure can not be more than 0.6V when, Schmidt trigger U1's
The end PIN11 5A is L, and 5Y is H, and triode Q7, triode Q8 are connected, and triode Q3, triode Q6 can end, and H bridge can shape
At open circuit, motor is cut off electric current, to realize overcurrent protection, rotation-clogging protection, until high current disappears, VDC voltage restores just
Often, system could work normally.
Power supply module 20 of the invention uses resistance-capacitance depressurization and provides DC voltage, is carried using the band of resistance-capacitance depressurization power supply special
Property combination Schmidt trigger realize overcurrent protection, rotation-clogging protection, have extremely strong stability and reliability.Meanwhile Yong Huke
To adjust the load capacity of power supply module, also adjustable diode D1 and rear end H-bridge drive circuit by adjusting means parameter
The current-limiting resistance of 10 driving power pipes changes the electric current by motor, adjusts motor speed, and whole system has very strong application
Property and economic value.
The above description is only a preferred embodiment of the present invention, rather than does limitation in any form to the present invention.This field
Technical staff can impose various equivalent changes and improvement, all institutes within the scope of the claims on the basis of the above embodiments
The equivalent variations or modification done, should all fall under the scope of the present invention.
Claims (9)
1. a kind of bldc controller of logic-based device, which is characterized in that the bldc controller packet of the logic-based device
It has included:
One H-bridge drive circuit being connect with brshless DC motor, to realize the driving and commutation of DC brushless motor;
One is mounted on the Hall sensor on the brshless DC motor, to detect the rotor-position of DC brushless motor and defeated
Commutation signal out;
One Schmidt trigger, receive the commutation signal and control the H-bridge drive circuit driving power pipe conducting with
Cut-off;
One power supply module, the power supply module are connect with the H-bridge drive circuit, Hall sensor, Schmidt trigger respectively.
2. the bldc controller of logic-based device as described in claim 1, which is characterized in that the power supply module includes
Have:
First DC voltage-stabilizing module comprising have resistance-capacitance depressurization unit, full-bridge rectification unit, filter unit and voltage regulation unit, institute
The input terminal for stating the first DC voltage-stabilizing module is electrically connected with city, for alternating current is depressured, is rectified, is filtered and pressure stabilizing at
Reason, and export the first stable DC voltage in output end and provide operating voltage for the H-bridge drive circuit;
Second DC voltage-stabilizing module, input terminal are connect with the output end of the first DC voltage-stabilizing module, for described the
One direct current pressure is depressured, is filtered and steady pressure treatment, and exporting the second stable DC voltage in output end is the Hall
Sensor and Schmidt trigger provide operating voltage;
Third DC voltage-stabilizing module, input terminal are connect with the output end of the second DC voltage-stabilizing module, for described the
Two DC voltages carry out pressure stabilizing, filtering and voltage division processing, and export stable third DC voltage in output end as Schmidt's touching
It sends out device and bias voltage is provided, the Schmidt trigger controls the enabled of the H-bridge drive circuit according to the bias voltage and opens
Close pipe conducting and cut-off.
3. the bldc controller of logic-based device as described in claim 1, which is characterized in that the DC brushless motor
Mains input side is provided with a clamp circuit.
4. the bldc controller of logic-based device as claimed in claim 3, which is characterized in that the clamp circuit includes
Double diode D3 and double diode D4, the double diode D3 connect with the power input positive terminal of the DC brushless motor with
The power input positive terminal voltage of DC brushless motor described in clamper, the electricity of the double diode D4 and the DC brushless motor
Source inputs negative pole end connection with the power input negative pole end voltage of DC brushless motor described in clamper.
5. the bldc controller of logic-based device as claimed in claim 4, which is characterized in that the double diode D3 and double
Diode D4 uses BAS28 model double diode.
6. the bldc controller of logic-based device as described in claim 1, which is characterized in that the Schmidt trigger is
6 channel Schmidt triggers of HEF40106 model.
7. the bldc controller of logic-based device as described in claim 1, which is characterized in that the H-bridge drive circuit packet
Triode Q1, triode Q2, triode Q3, triode Q4, triode Q5, triode Q6, resistance R18 and resistance R19, institute are included
The base stage for stating triode Q2, triode Q3, triode Q5 and triode Q6 is connect with the Schmidt trigger, triode Q2
Emitter ground connection, the collector of triode Q2 connect with the base stage of triode Q1, the base stage of triode Q1 pass through resistance R19 and
Power supply module connection, the emitter of triode Q1 connects with the power supply module, the collector of triode Q1 with it is described directly
Flow the collector connection of the power input positive terminal and triode Q3 of brushless motor, the emitter ground connection of triode Q3, three poles
The emitter of pipe Q5 is grounded, and the collector of triode Q5 is connect with the base stage of triode Q4, and the base stage of triode Q4 passes through resistance
R18 is connect with the power supply module, and the emitter of triode Q4 is connect with the power supply module, the collector of triode Q4 and institute
State the collector connection of the power input negative pole end and triode Q6 of DC brushless motor, the emitter ground connection of triode Q6.
8. the bldc controller of logic-based device as claimed in claim 7, which is characterized in that the H-bridge drive circuit packet
It has included resistance R10, resistance R11, resistance R12, resistance R13, resistance R17 and resistance R20, the resistance R10 and has been connected to triode
Between the base stage of Q1 and the collector of triode Q2, the resistance R11 is connected to the base stage of triode Q3 and the Schmidt touches
It sends out between device, the resistance R12 is connected between the base stage of triode Q4 and the collector of triode Q5, and the resistance R13 connects
It is connected between the base stage of triode Q6 and the Schmidt trigger, the resistance R17 is connected to base stage and the institute of triode Q5
It states between Schmidt trigger, the resistance R20 is connected between the base stage of triode Q2 and the Schmidt trigger.
9. the bldc controller of logic-based device as claimed in claim 2, which is characterized in that the H-bridge drive circuit packet
Included triode Q1, triode Q2, triode Q3, triode Q4, triode Q5, triode Q6, triode Q7, triode Q8,
Resistance R10, resistance R11, resistance R12, resistance R13, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20 and resistance
The base stage of R21, the triode Q2 are connect by resistance R20 with the Schmidt trigger, the emitter ground connection of triode Q2,
The collector of triode Q2 is connect by resistance R19 with the first DC voltage-stabilizing module;The base stage of triode Q1 passes through resistance
R10 is connect with the collector of triode Q2, and the emitter of triode Q1 is connect with the first DC voltage-stabilizing module, triode Q1
Collector connect with the collector of the power input positive terminal of the DC brushless motor and triode Q3;Triode Q3's
The base stage of emitter ground connection, triode Q3 is connect by resistance R11 with the Schmidt trigger;The collector of triode Q7 with
The base stage of triode Q3 connects, and the emitter ground connection of triode Q7, the base stage of triode Q7 passes through resistance R21 and the Schmidt
The base stage of trigger connection, the triode Q5 is connect by resistance R17 with the Schmidt trigger, the transmitting of triode Q5
The collector of pole ground connection, triode Q5 is connect by resistance R18 with the first DC voltage-stabilizing module;The base stage of triode Q4 is logical
Resistance R12 to be crossed to connect with the collector of triode Q5, the emitter of triode Q4 is connect with the first DC voltage-stabilizing module, and three
The collector of pole pipe Q4 is connect with the collector of the power input negative pole end of the DC brushless motor and triode Q6;Three poles
The emitter of pipe Q6 is grounded, and the base stage of triode Q6 is connect by resistance R13 with the Schmidt trigger;The collection of triode Q8
Electrode is connect with the base stage of triode Q6, the emitter of triode Q8 ground connection, the base stage of triode Q8 by resistance R16 with it is described
Schmidt trigger connection.
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US3898544A (en) * | 1972-02-03 | 1975-08-05 | Canon Kk | DC brushless motor |
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