CN105978420A - DC motor driving signal coupling method and device under strong electromagnetic interference environment - Google Patents
DC motor driving signal coupling method and device under strong electromagnetic interference environment Download PDFInfo
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- CN105978420A CN105978420A CN201610385397.XA CN201610385397A CN105978420A CN 105978420 A CN105978420 A CN 105978420A CN 201610385397 A CN201610385397 A CN 201610385397A CN 105978420 A CN105978420 A CN 105978420A
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- effect transistors
- electromagnetic interference
- signal
- strong electromagnetic
- output port
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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
- H02P7/285—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 controlling armature supply only
- H02P7/29—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 controlling armature supply only using pulse modulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
The invention discloses a DC motor driving signal coupling method and device under strong electromagnetic interference environment, relating to the automobile DC motor PWM control technology field. The DC motor driving signal coupling method is characterized by comprising steps of coupling a PWM voltage square wave signal directly transmitted by a control unit ECU with a switch circuit constituted by field effect transistors through a photoelectric coupled device, adopting a double-capacitor and double-inductor decoupling circuit on a grid loop of the switch circuit constituted by the field effect transistors to perform analog-to-digital isolation, adopting two P type MOSFET transistors and two N type MOSFET transistors to from two arms of a complementary H type electric bridge to solve a problem of configuring a bias circuit, and adding an RC protection circuit which is connected to four sets of the MOSFEIT transistors in parallel to better inhibit an influence on the motor because of a clutter signal. The DC motor driving signal coupling method and device solve a technical difficult problem for automobile DC motor PWM signal transmission coupling, and has advantages of high efficiency, strong reliability and low cost.
Description
Technical field
The invention discloses coupling process and the device of automobile-used DC motor Driver signal under a kind of strong electromagnetic interference environment,
The direct current generator PWM relating to automobile controls technical field.
Background technology
Bidirectional speed governing control is needed, the most employing H type bridge drive circuit during the work of automobile direct current generator.Automobile
Electric system includes electromotor, starter motor and igniter and control system, belongs to multiple compound strong electromagnetic interference environment.Especially
It is that development in recent years is mixed in electrical automobile faster, is formed by combining including electromotor, high-voltage generator and drive motor,
At least a part of which includes generating, powersupply system, i.e. driving power source system and the control power-supply system that two sets are independent, has more strong
Strong electromagnetic radiation.Under these conditions, automobile-used direct current generator PWM pulse-width signal can be done by intense electromagnetic radiation
Disturb, the high voltage pulse sensed is brought in system, affect controlled motor H type bridge drive circuit and normally work, cause control
Make malfunctioning.
It addition, the H-bridge circuit of bidirectional speed governing direct current generator PWM pulsewidth modulation drive circuit, the most commonly used four N-types
Metal-oxide-semiconductor composition H-bridge circuit drives motor, this drive circuit to have two weak points: 1) to drive four N-type metal-oxide-semiconductors
In one group, the grid G voltage of upper metal-oxide-semiconductor Q1 must reach more than 12VDC, metal-oxide-semiconductor Q1 to be made and open and thoroughly then must reach
More than 20V, and the power supply of only one of which 12～14VDC in actual vehicle, so must add boostrap circuit at metal-oxide-semiconductor Q1 at Q3
Improve voltage, cause circuit complex fault rate high, poor reliability；2) the PWM square-wave voltage by compound strong electromagnetic is direct
Being added on motor, the current fluctuation of motor is big, and high-frequency noise is relatively big, fluctuation of service.
These are all that the technology that automobile-used direct current generator H-bridge circuit exists when working under strong electromagnetic interference environment is asked
Topic, is badly in need of solving.
Summary of the invention
The problem that it is an object of the invention to exist for prior art, it is provided that automobile-used direct current under a kind of strong electromagnetic interference environment
The coupling process of motor drive signal and device.
Experimental studies have found that, the reason causing prior art problem is, the coupling of existing automobile-used DC motor Driver signal
Locking device, can not effectively filter out and suppress to disturb signal under strong electromagnetic interference environment, to such an extent as to amplify the intensity of interference signal.
Being directed to this, the technical characteristic of the present invention shows themselves in that the PWM voltage square wave signal directly sent by main control unit ECU is through light
The on-off circuit that charge coupled device forms with field-effect transistor couples, the on-off circuit of scene effect transistor composition
Use dual-capacitor and double inductance decoupling circuit to carry out modulus isolation on grid return, farthest filter the interference of power supply
Signal；Use two p-type MOSFET pipes and two N-type MOSFET pipes to be overlapped to form the two-arm of complementary H type electric bridge, solve biasing
The problem that circuit is arranged；Add RC protection circuit four groups of MOSFET pipe parallel connections simultaneously, not only protect field-effect transistor, also
Preferably inhibit the noise signal impact on motor.
The coupling process of automobile-used DC motor Driver signal under a kind of strong electromagnetic interference environment, is characterized in that including following skill
Art scheme:
By vehicle bidirectional speed-regulated DC motor PWM pulse-width signal and switching signal, it is respectively fed to the defeated of No. 4 photoelectrical couplers
Enter end, the output port of photoelectrical coupler respectively with the control of the H type bridge drive circuit being made up of four field-effect transistors
Grid couples, and constitutes signal transmission loop, isolates electromagnetic interference signal；
The output port of photoelectrical coupler couples bias resistor respectively, arranges filtering between common port and the ground of bias resistor
Inductance and capacitor composition wave trap, arrange between common port and the power supply of the output port of photoelectrical coupler filter inductance and
The wave trap of capacitor composition, filters electromagnetic interference signal and suppresses；
In the output loop of the H type bridge drive circuit of four field-effect transistor compositions, parallel RC circuits, the electricity to output
Magnetic disturbance signal filters.
Automobile-used DC electric machine drive apparatus under a kind of strong electromagnetic interference environment, including be made up of four field-effect transistors
H type bridge drive circuit, is characterized in that:
In four described field-effect transistors, use 2 p-type MOSFET pipes, control motor steering, 2 N-type MOSFET management and control
Electric machine speed regulation processed composition complementary type H bridge switch circuit；
The control gate of four described field-effect transistors output port with No. 4 photoelectrical couplers respectively is connected, photoelectricity
The output port of bonder couples bias resistor respectively, arranges filter inductance and electricity between common port and the ground of bias resistor
The wave trap of container composition, arranges filter inductance and Capacitor banks between common port and the power supply of the output port of photoelectrical coupler
The wave trap become, the input of described photoelectrical coupler, respectively with direct current generator PWM pulse-width signal and switching signal source
It is connected；
In the drain electrode loop of four described field-effect transistors, it is parallel with RC wave filter respectively.
During work, direct current generator PWM pulse-width signal and switching signal are defeated from the input of described photoelectrical coupler
Enter, through Phototube Coupling, filtering, the H type bridge circuit of four field-effect transistor compositions described in driving, four field effect crystalline substances
The RC wave filter in the drain electrode loop of body pipe carries out secondary to electromagnetic interference signal and filters, and pure driving signal is transported to unidirectional current
In machine, complete bidirectional speed governing and run.
It is an advantage of the invention that H-bridge circuit is designed with 2 p-type MOSFET pipes, control motor steering, 2 N-types MOSFET
Management and control electric machine speed regulation；Drive MOSFET tube grid signal to need not move through amplifying circuit and boostrap circuit, have MCU output port
Directly by photoelectrical coupler, thus drive MOSFET tube grid, simplify circuit design；The switch of scene effect transistor composition
Use dual-capacitor and double inductance decoupling circuit to carry out modulus isolation on the grid return of circuit, farthest filter power supply
Interference signal.
The present invention solves the technical barrier of automobile-used direct current generator PWM pulse-width signal transmission coupling, has simple height
Effect, highly reliable, the advantage of low cost.It is suitable on various motor vehicles application, there is good economic and social benefit.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit diagram of the present invention.
Detailed description of the invention
Below by Figure of description, make to disclose further to the specific embodiment of the present invention.
Embodiment one
Automobile-used DC electric machine drive apparatus under a kind of strong electromagnetic interference environment, including the H type being made up of four field-effect transistors
Bridge drive circuit, is characterized in that:
In four described field-effect transistors, use 2 p-type MOSFET pipes, control motor steering, 2 N-type MOSFET management and control
Electric machine speed regulation processed composition complementary type H bridge switch circuit；
The control gate of four described field-effect transistors output port with No. 4 photoelectrical couplers respectively is connected, photoelectricity
The output port of bonder couples bias resistor respectively, arranges filter inductance and electricity between common port and the ground of bias resistor
The wave trap of container composition, arranges filter inductance and Capacitor banks between common port and the power supply of the output port of photoelectrical coupler
The wave trap become, the input of described photoelectrical coupler, respectively with direct current generator PWM pulse-width signal and switching signal source
It is connected；
In the drain electrode loop of four described field-effect transistors, it is parallel with RC wave filter respectively.
The model of 2 described p-type MOSFET pipes is IRF4905.
The model of 2 described N-type MOSFET pipes is IRF1607.
The model of described No. 4 photoelectrical couplers is TLP521-4.
The described resistance in RC wave filter is 10K Ω, and electric capacity is 0.01uF, constitutes the low-resistance filtering of strong electromagnetic
Device.
The described inductance in wave trap is 10uH, and electric capacity is 33uF and the low-resistance trap of 0.33uF composition strong electromagnetic
Device.
Physical circuit is constituted as it is shown in figure 1, vehicle power+12～14VDC are divided into two-way, and a road is directly connected to two in parallel
P-type MOSFET pipe Q1P, the source S of Q3P, another road power supply passes through inductance L2, filters through shunt capacitance C5, C6 and inductance L1
Circuit, is connected to the 4 road output ports of photoelectrical coupler U.
Photoelectrical coupler U input T1, T2, T3, T4 connect four tunnel control signals, and wherein T1 and T3 connects the defeated of controller MCU
Go out end, by controller MCU output switching signal to realize photoelectrical coupler U T1 and T3 control, the T1 of photoelectrical coupler U and
T3 passes through photoelectric effect, outputs control signals to the grid G of p-type MOSFET pipe Q1P, Q3P, thus controls p-type MOSFET pipe
The on and off of Q1P, Q3P, promotes direct current generator M rotating energising or power-off；Second road and the 4th tunnel connect controller MCU's
Outfan, passes through photoelectric effect by controller MCU output PWM speed-regulating signal to realization, T2 and T4 of photoelectrical coupler U,
PWM modulation signal exports the grid G of N-type MOSFET pipe Q2, Q4, it is achieved pipe Q2, Q4 pulsewidth modulation of N-type MOSFET, promotes straight
Stream motor M rotating speed governing.
T1, T2, T3, T4 of photoelectrical coupler U is respectively by four resistance R8, and R9, R10, R11 connect with signal ground.
Grid G parallel resistance R5 of p-type MOSFET pipe Q1P, Q3P, ground connection of connecting with inductance L1 after R3；The grid of N-type MOSFET pipe Q2, Q4
Pole G parallel resistance R4, ground connection of connecting with inductance L1 after R2.P-type MOSFET pipe Q1P, Q3P and N-type Q2, Q4 build H bridge and drive electricity
Road, adds RC circuit four groups of MOSFET pipe parallel connections simultaneously.
Analog power and digital power use inductance L1, L2 to carry out modulus isolation；Control signal end uses optocoupler U,
It includes four road photoelectric coupled device T1, T2, T3, T4, and optocoupler is on the one hand for system forceful electric power and the isolation of light current, on the other hand
For driving four MOSFET pipes, the pwm control signal of motor and direction control signal are all to be loaded into MOSFET after optocoupler
Tube grid G pin.T1 controls the break-make of MOSFET pipe Q1P, and T2 controls the break-make of MOSFET pipe Q2, and T3 controls MOSFET pipe Q3P
Break-make, T4 control MOSFET pipe Q4 break-make.When T1 and T4 conducting, T2 and T3 turn off, corresponding Q1P, Q4 turn on,
Q2, Q3 turn off, and current of electric flows to ground through Q1P, MOTOR, Q4, and now motor rotates forward.During motor reversal, the break-make situation of device
Contrast.
Peak point current when resistance R29～R32 and electric capacity C19～C22 is for limiting metal-oxide-semiconductor interelectrode capacity discharge and recharge, main
Surge voltage during element OFF to be considered limits, and resistance sizes is chosen as 10K about Ω, and it is left that capacitance size is chosen as 0.01uF
Right.
Embodiment two
Automobile-used DC electric machine drive apparatus under a kind of strong electromagnetic interference environment, including the H type being made up of four field-effect transistors
Bridge drive circuit, is characterized in that:
In four described field-effect transistors, use 2 p-type MOSFET pipes, control motor steering, 2 N-type MOSFET management and control
Electric machine speed regulation processed composition complementary type H bridge switch circuit；
The control gate of four described field-effect transistors output port with No. 4 photoelectrical couplers respectively is connected, photoelectricity
The output port of bonder couples bias resistor respectively, arranges filter inductance and electricity between common port and the ground of bias resistor
The wave trap of container composition, arranges filter inductance and Capacitor banks between common port and the power supply of the output port of photoelectrical coupler
The wave trap become, the input of described photoelectrical coupler, respectively with direct current generator PWM pulse-width signal and switching signal source
It is connected；
In the drain electrode loop of four described field-effect transistors, it is parallel with LC series resonance wave filter respectively.
Described LC series resonance wave filter, compared with RC wave filter, has more excellent frequency response, can improve filter
Ripple effect.Electromagnetic interference in particular for a certain frequency range.But it should be noted that avoid the frequency range of PWM pulse-width signal.
Advantage of this embodiment is that and can filter the known strong electromagnetic source of suppression targetedly.
Claims (5)
1. a coupling process for automobile-used DC motor Driver signal under strong electromagnetic interference environment, its feature includes techniques below side
Case:
By vehicle bidirectional speed-regulated DC motor PWM pulse-width signal and switching signal, it is respectively fed to the defeated of No. 4 photoelectrical couplers
Enter end, the output port of photoelectrical coupler respectively with the control of the H type bridge drive circuit being made up of four field-effect transistors
Grid couples, and constitutes signal transmission loop, isolates electromagnetic interference signal；
The output port of photoelectrical coupler couples bias resistor respectively, arranges filtering between common port and the ground of bias resistor
Inductance and capacitor composition wave trap, arrange between common port and the power supply of the output port of photoelectrical coupler filter inductance and
The wave trap of capacitor composition, filters electromagnetic interference signal and suppresses；
In the output loop of the H type bridge drive circuit of four field-effect transistor compositions, parallel RC circuits, the electricity to output
Magnetic disturbance signal filters.
2. an automobile-used DC electric machine drive apparatus under strong electromagnetic interference environment, including the H being made up of four field-effect transistors
Type bridge drive circuit, is characterized in that:
In four described field-effect transistors, use 2 p-type MOSFET pipes, control motor steering, 2 N-type MOSFET management and control
Electric machine speed regulation processed composition complementary type H bridge switch circuit；
The control gate of four described field-effect transistors output port with No. 4 photoelectrical couplers respectively is connected, photoelectricity
The output port of bonder couples bias resistor respectively, arranges filter inductance and electricity between common port and the ground of bias resistor
The wave trap of container composition, arranges filter inductance and Capacitor banks between common port and the power supply of the output port of photoelectrical coupler
The wave trap become, the input of described photoelectrical coupler, respectively with direct current generator PWM pulse-width signal and switching signal source
It is connected；
In the drain electrode loop of four described field-effect transistors, it is parallel with RC wave filter respectively.
Automobile-used DC electric machine drive apparatus under strong electromagnetic interference environment the most according to claim 2, is characterized in that described
Resistance in RC wave filter is 10K Ω, and electric capacity is 0.01uF, constitutes the low-cut filter of strong electromagnetic.
Automobile-used DC electric machine drive apparatus under strong electromagnetic interference environment the most according to claim 2, is characterized in that described
Inductance in wave trap is 10uH, and electric capacity is 33uF and the low-resistance wave trap of 0.33uF composition strong electromagnetic.
5. an automobile-used DC electric machine drive apparatus under strong electromagnetic interference environment, including the H being made up of four field-effect transistors
Type bridge drive circuit, is characterized in that:
In four described field-effect transistors, use 2 p-type MOSFET pipes, control motor steering, 2 N-type MOSFET management and control
Electric machine speed regulation processed composition complementary type H bridge switch circuit；
The control gate of four described field-effect transistors output port with No. 4 photoelectrical couplers respectively is connected, photoelectricity
The output port of bonder couples bias resistor respectively, arranges filter inductance and electricity between common port and the ground of bias resistor
The wave trap of container composition, arranges filter inductance and Capacitor banks between common port and the power supply of the output port of photoelectrical coupler
The wave trap become, the input of described photoelectrical coupler, respectively with direct current generator PWM pulse-width signal and switching signal source
It is connected；
In the drain electrode loop of four described field-effect transistors, it is parallel with LC series resonance wave filter respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610385397.XA CN105978420A (en) | 2016-06-03 | 2016-06-03 | DC motor driving signal coupling method and device under strong electromagnetic interference environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610385397.XA CN105978420A (en) | 2016-06-03 | 2016-06-03 | DC motor driving signal coupling method and device under strong electromagnetic interference environment |
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| CN105978420A true CN105978420A (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610385397.XA Pending CN105978420A (en) | 2016-06-03 | 2016-06-03 | DC motor driving signal coupling method and device under strong electromagnetic interference environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108521241A (en) * | 2018-04-28 | 2018-09-11 | 常州电子研究所有限公司 | Switching mechanism driving circuit and its driving method |
| CN108768226A (en) * | 2018-06-22 | 2018-11-06 | 青岛科技大学 | A kind of circuit structure based on monolithic processor controlled motor positive and inverse |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090115388A1 (en) * | 2007-10-18 | 2009-05-07 | Yamaha Corporation | DC/DC converter |
| CN102522933A (en) * | 2011-11-29 | 2012-06-27 | 中国航天时代电子公司 | Drive circuit for direct-current motor |
| CN103580565A (en) * | 2012-08-02 | 2014-02-12 | 重庆金美通信有限责任公司 | Direct current motor driving circuit with radiation suppressing and motor protecting functions |
| CN105007298A (en) * | 2015-05-27 | 2015-10-28 | 江西师范大学 | Internet remote control socket system |
| CN205754088U (en) * | 2016-06-03 | 2016-11-30 | 沙洲职业工学院 | DC electric machine drive apparatus under strong electromagnetic interference environment |
-
2016
- 2016-06-03 CN CN201610385397.XA patent/CN105978420A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090115388A1 (en) * | 2007-10-18 | 2009-05-07 | Yamaha Corporation | DC/DC converter |
| CN102522933A (en) * | 2011-11-29 | 2012-06-27 | 中国航天时代电子公司 | Drive circuit for direct-current motor |
| CN103580565A (en) * | 2012-08-02 | 2014-02-12 | 重庆金美通信有限责任公司 | Direct current motor driving circuit with radiation suppressing and motor protecting functions |
| CN105007298A (en) * | 2015-05-27 | 2015-10-28 | 江西师范大学 | Internet remote control socket system |
| CN205754088U (en) * | 2016-06-03 | 2016-11-30 | 沙洲职业工学院 | DC electric machine drive apparatus under strong electromagnetic interference environment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108521241A (en) * | 2018-04-28 | 2018-09-11 | 常州电子研究所有限公司 | Switching mechanism driving circuit and its driving method |
| CN108768226A (en) * | 2018-06-22 | 2018-11-06 | 青岛科技大学 | A kind of circuit structure based on monolithic processor controlled motor positive and inverse |
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Application publication date: 20160928 |