CN105867224A - Electric control unit of automotive electronic parking system - Google Patents
Electric control unit of automotive electronic parking system Download PDFInfo
- Publication number
- CN105867224A CN105867224A CN201610224267.8A CN201610224267A CN105867224A CN 105867224 A CN105867224 A CN 105867224A CN 201610224267 A CN201610224267 A CN 201610224267A CN 105867224 A CN105867224 A CN 105867224A
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25314—Modular structure, modules
Abstract
The invention discloses an electric control unit of an automotive electronic parking system. The electric control unit comprises a power supply module, a signal processing module, a BDM debugging module, a clock generating module, a motor driving module, a power supply module U1 and a master control chip U2. The electric control unit of the vehicular electronic parking system realizes higher safety and higher comfort of an automobile. Electronic parking is controlled by a button. A large space in the automobile is saved. The electric control unit has a self-diagnosis function and an alarming function. Automobile sliding is prevented. On condition that a driver forgets to perform automobile parking, the parking function can be triggered and stopped automatically.
Description
Technical field
The present invention relates to automotive-type electronic technology field, the electricity of a kind of vehicle electric parking system
Control unit.
Background technology
At present, on market, major part automobile uses mechanical parking system, is commonly called as " parking brake ".Its
Operation principle is to pull steel wire to make brake disc work by handle.Along with social development, automobile quantity
Increasing, road conditions also become more complicated so that the inconvenience of the operation of parking brake, and easily grind
Damaging and deformation thus the shortcoming of causing trouble highlight day by day, the driving that this not only adds automobile is difficult
Degree, the most also makes the security of driving be substantially reduced.
Along with the fast development of automotive electronics, the intelligence degree of automobile is more and more higher, electronic parking system
System also arises at the historic moment.Electronic parking system features in convenient, good stability, when driving a vehicle brake fade also
Can be fully able to substitute parking brake as brake hard.Electronic parking system is by equipped with planetary gear speed-reduction
The left and right caliper of mechanism and motor and ECU composition.Come manually operated by electronic button, letter
Single laborsaving, improve the cornering ability of automobile.
But, existing electronic parking systemic-function is the most single, not intelligence, only by button manipulations,
The mode of operation of electronic parking system can not be automatically adjusted according to the status information of vehicle.Can not
Control motor exactly, i.e. the ruuning situation of vehicle as required can not adjust the output of motor and come
Controlling caliper, this makes parking performance the best, intelligent not.This is detrimental to electronic parking system
Popularizing of system.
Therefore the electronic parking system developing a kind of function more perfect, more intelligent is the most necessary.
Summary of the invention
In order to overcome above-mentioned deficiency, it is achieved above-mentioned purpose, the invention provides a kind of vehicle electric parking
The ECU of system:
The present invention include power module, signal processing module, BDM debugging module, Clock generation module,
Motor drive module, power module U1:freescale MC33904 and main control chip U2:
Freescale MC9S12XET256, described power module is for+12V voltage the conversion provided by automobile
For accessing circuit and accessing the voltage that circuit internal component can use；Described signal processing module is used
In the rotating speed and the direction signal that gather motor；Described BDM debugging module is used for making reseting port be in height
Level state；Described Clock generation module is for providing clock reference to main control chip U2 and and carrying out
Initialize；Described motor drive module is for accepting the control signal of main control chip U2 and controlling motor
Rotating speed and direction.
The method have the advantages that
1. using more convenient, function is more perfect, and parking performance is more preferable；
2. design is small and exquisite, and cost is reasonable, PCB design compact and reasonable, and component purchase produces the most square
Just；
3. making automobile safer, more comfortable, electronic parking is controlled by button, saves in car
A lot of spaces, have self diagnosis and a warning function, do not have and slip car, forget parking driver
Time parking function also can automatically trigger or close.
Accompanying drawing explanation
Fig. 1 is executing agency's schematic diagram of the electronic parking system that the present invention relates to.
Fig. 2 is the electrical schematic diagram of the ECU of the electronic parking system that the present invention relates to.
Fig. 3 is the circuit diagram of the power module of the ECU of the electronic parking system that the present invention relates to.
Fig. 4 be the present invention remove power module circuit diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment further illustrates the present invention.
Embodiment: the present invention include power module, signal processing module 200, BDM debugging module 201,
Clock generation module 202, motor drive module 203, power module U1:FREESCALE MC33904
And main control chip U2, described power module is for being converted to access electricity by the+12V voltage that automobile provides
The voltage that road and access circuit internal component can use；The input of described signal and acquisition module 200
For gathering rotating speed and the direction signal of motor；Described BDM debugging module 201 is used for making reseting port
It is in high level state；Described Clock generation module 202 is for providing clock reference to main control chip U2
With and initialize；Described motor drive module 203 is for accepting the control letter of main control chip U2
Number and control rotating speed and the direction of motor.Described power module include filter capacitor C1, filter capacitor C2,
Filter capacitor C3, filter capacitor C4, filter capacitor C5, filter capacitor C6, filter capacitor C7, electricity
Source conversion chip U1, CAN chip L1 and triode Q1, described filter capacitor C1, filtering
With power conversion chip U1:FREESCALE MC33904's after electric capacity C2 and filter capacitor C3 parallel connection
Pin VSUP1 and VSUP2 connects, and the emitter stage of described triode Q1 is with power conversion chip U1's
Pin VB connects, and the base stage of described triode Q1 is connected with the pin VE of power conversion chip U1,
The colelctor electrode of triode Q1, described CAN it is connected to after described filter capacitor C6 and filter capacitor C7 parallel connection
The pin CANH and pin CANL of bus chip L1 and power conversion chip U1 are connected, described filtering
After electric capacity C4 and C5 parallel connection, the pin V-AUX with power conversion chip U1 is connected.Described signal inputs
With acquisition module 200 include terminal CZ1, resistance R10, resistance R11, resistance R12, resistance R13,
Resistance R14, resistance R15, p-type triode Q11, triode Q12, electric capacity C21, electric capacity C22,
Electric capacity C23, electric capacity C24, electric capacity C25, electric capacity C26, electric capacity C27, electric capacity C39, electric capacity C40,
Electric capacity C41, velocity sensor U41 and displacement transducer U42, the transmitting of described p-type triode Q11
Pole is connected with power supply VCC, one end of described resistance R11 is connected with the colelctor electrode of p-type triode Q11,
Other end ground connection, one end of described electric capacity C23 is connected with the colelctor electrode of p-type triode Q11, another
End ground connection, the colelctor electrode of described p-type triode Q11 is connected with main control chip U2, described electric capacity C21
One end be connected with the pin EPB of terminal CZ1, other end ground connection, one end of described resistance R10 with
The pin EPB of terminal CZ1 is connected, the other end is connected with the base stage of p-type triode Q11, and described three
The grounded emitter of pole pipe Q12, the colelctor electrode of described triode Q12 and the pin Switch of terminal CZ1
Lamp is connected, and one end of described electric capacity C22 is connected with the pin Switch Lamp of terminal CZ1, separately
One end ground connection, one end of described resistance R12 is connected by the base stage of resistance R13 and triode Q12,
The other end ground connection of described resistance R12, one end of described electric capacity C24 simultaneously with resistance R13 and resistance
R12 is connected, the other end ground connection of described electric capacity C24, described velocity sensor U41 and main control chip
U2 is connected and passes through resistance R14, resistance R15, electric capacity C25, electric capacity C26 and electric capacity C27 voltage stabilizing
And filtering, institute displacement sensors U42 is connected with main control chip U2, and filters dry by electric capacity C40
Disturb and ensure that waveform is undistorted and passes through electric capacity C39 voltage stabilizing.Described BDM debugging module 201 includes BDM
Debugging interface JBDM, resistance R16 and electric capacity C30, the pin 1 of described BDM debugging interface JBDM connects
Enter the debugging stitch BKGD of main control chip U2, and by resistance R16 and by electric capacity C30 voltage stabilizing.
Described Clock generation module 202 includes crystal oscillator X1, resistance R17, electric capacity C28 and electric capacity C29, described
Crystal oscillator X1 is in parallel with resistance R17, the equal ground connection in one end of described electric capacity C28 and electric capacity C29, described electricity
The other end holding C28 and electric capacity C29 is respectively connecting to crystal oscillator X1 two ends.Described motor drive module 203
Including Half-bridge motor driving chip U31, Half-bridge motor driving chip U32, electric capacity C31, electric capacity C32,
Electric capacity C33, electric capacity C34, electric capacity C35, electric capacity C36, electric capacity C37, electric capacity C38, resistance R21,
Resistance R23, resistance R24, resistance R25, resistance R26, resistance R27, resistance R29, resistance R30,
Resistance R31 and resistance R32, described Half-bridge motor driving chip U31 and Half-bridge motor driving chip U32
Series connection and Half-bridge motor driving chip U31 and Half-bridge motor driving chip U32 upper end all access 12V
Power supply, lower end ground connection, 12V power supply electric capacity C31 in parallel, electric capacity C32, electric capacity C33 and electricity
Hold C36 and filter harmonic wave and voltage stabilizing, 12V plant-grid connection Half-bridge motor driving chip U31 and Half-bridge motor
The pin 7 of driving chip U32, Half-bridge motor driving chip U31 and Half-bridge motor driving chip U32's
The equal ground connection of pin 1, main control chip U2 output signal IN_A, output signal INH_A, output signal
IN_B and output signal INH_B respectively by series resistance resistance R23, resistance R24, resistance R29,
Resistance R30 inputs to Half-bridge motor driving chip U31 and Half-bridge motor driving chip U32, passes through simultaneously
Resistance R25, resistance R26, resistance R31 and resistance R32 are pulled down to ground, the motor drive signal of output
The motor drive signal MB shunt capacitance C37 of MA and output and electric capacity C38, Half-bridge motor driving chip
The current feedback signal shunt capacitance C34 of U31 and Half-bridge motor driving chip U32 and electric capacity C35, with
Time connecting resistance R21 and resistance R27.
Fig. 1 is executing agency's schematic diagram of the electronic parking system that the present invention relates to.Its operation principle is:
When ECU receives the signal of parking button or judges by software algorithm according to travel condition of vehicle
During to needs parking, drive motor 1 action.Motor 1 driven gear 2 rotates, and by two-stage tooth
Wheel deceleration (2 and 3,4 and 5) increases output torque.Second driven gear 5 drives bolt and nut
Secondary motion, is converted into the linear motion of screw rod 9 by rotation, and screw rod 9 pulls drag-line to promote brake block
Braking to brake disc.Fig. 2 is the most former of the ECU of the electronic parking system that the present invention relates to
Reason figure.Automobile offer+12V normal voltage is converted to required for CPU and sensor by power module
+ 5V voltage, the power supply chip of use has also carried CAN transceiver function.This ECU leads to car load
Cross CAN circuit and complete communication, collection vehicle running status and the running status of this ECU being passed through
Instrument exports.Motor-drive circuit accepts the enable signal drive motor of CPU to be completed to work accordingly.
Feedback circuit includes the collection of displacement signal and tach signal.When crystal oscillator and reset circuit provide for CPU
Clock reference and function of initializing.Fig. 3 is the electricity of the ECU of the electronic parking system that the present invention relates to
The circuit diagram of source module.Vehicle-mounted+12V photovoltaic conversion is CPU, sensor, interface by this power module
+ 5V needed for circuit.The signal of+12V enters power supply after filter capacitor C1, C2, C3 in parallel
Drain output voltage VDD for CPU, vdd terminal parallel connection after chip U1, triode Q1 series connection U1
Electric capacity C6/C7 is used as decoupling filtering.Power supply chip U1 also has a CAN communication function, chip L1,
Q1 with U1 connects and can protect CAN, it is ensured that data transmission is few impacted.L1 chip can suppress not
Symmetric disturbance, Q1 chip can suppress the interference that electrostatic and transient current are formed.U1 and filter capacitor C4,
After C5 parallel connection, output voltage VCC is for sensor and interface circuit.Fig. 4 is the electricity that the present invention relates to
The circuit theory diagrams of the ECU of sub-parking system each main functional modules in addition to power module.Respectively
Module is independent, is all connected with U2.In signal input and acquisition module 200, vehicle-mounted+12V power supply, whole
Car CAN signal, parking switch signal and parking indicator lamp signal are inputted by terminal CZ1.Resistance R10,
P-type triode Q11, resistance R11 connect, and the VCC that triode Q11 exports with power module goes here and there respectively
Joining then that shunt capacitance C21, C23 is for filtering, parking switch signal can be converted into master by this circuit
Control receptible 0V or 5V of chip U2.Parking indicator lamp signal is controlled triode by main control chip U2
The break-make of Q12 controls, triode Q12 series resistance R11, R12 and shunt capacitance C22, C24,
C41 is used for filtering interfering.This module can also gather motor speed signal and displacement signal.U41 is Hall
Formula speed probe, is powered by VCC, and shunt capacitance C27 plays pressure stabilization function.Motor speed and
Direction output port connects pull-up resistor R14, R15, goes back parallel connection filter capacitor C25, C26.U42 is
Displacement transducer, accesses VCC and powers, and uses electric capacity C39 to carry out voltage stabilizing.Main control chip U2 gathers displacement
Signal, shunt capacitance C40 carrys out filtering interfering, it is ensured that waveform is undistorted.BDM debugging module 201, J0
For BDM debugging interface, pin 1 accesses the debugging stitch BKGD of U2, and pin six loading power module is defeated
Go out ground vdd voltage.Debugging interface is also connected with the reset stitch of U2, resistance R16, VDD in parallel
Making reseting port be in high level state, electric capacity C31 plays pressure stabilization function.Clock generation module 202, brilliant
X1 two ends parallel resistance R17 of shaking and electric capacity C28, C29, resistance capacitance is used for regulating crystal oscillator output waveform,
Make clock signal more accurate.Motor drive module 203, Half-bridge motor driving chip U31, U32 connect
And upper end access+12V voltage, lower end ground connection.+ 12V shunt capacitance C31, C32, C33, C36 use
Filter harmonic wave and voltage stabilizing.7 ends of rear access U31/U32, and the 1 end ground connection of U31/U32.
Main control chip U2 output signal IN_A, INH_A, IN_B, INH_B respectively series resistance R23, R24,
R29, R30, input driving chip U31, U32.IN signal can enable chip, and INH signal can make core
Sheet does not work and is in low-power consumption mode, and is pulled down to ground through resistance R25, R26, R31, R32,
Prevent driving chip misoperation.MA, MB are the motor drive signal of output, electric capacity C37 in parallel connection,
C38.Driving chip U31, U32 can also feed back current of electric, current feedback signal is in parallel electric capacity C34,
C35, is connected to pull down resistor R21, R27.When reaching current limit value because of reasons such as stalls, can suspend
The work of drive circuit.Power module is by power conversion chip U1:FREESCALE MC33904
+ 12V the voltage that automobile provides is converted to main control chip U2, velocity sensor U41 and displacement transducer
VDD, VCC that U42 can use.The status information of car load inputs master control core by CAN communication circuit 4
Sheet U2, the CAN carried by power conversion chip U1:FREESCALE MC33904 the CAN that connects
Bus protection chip L1, Q10 complete CAN communication.Motor-drive circuit 8 mainly accepts master control
Half-bridge driven chip-in series U31, U32 that the control signal of chip U2 is fed back by belt current control
The rotating speed of motor and direction, drive circuit belt current testing circuit, also can complete gentle overcurrent protection.
Motor speed and displacement signal input circuit 3 Negotiation speed sensor U41 and displacement transducer U42 come
Gather rotating speed and the direction of motor.By triode Q11 series connection VCC in button signal input circuit 2
Connect the signal gathering button, possibly together with triode Q12 series resistance R12, R13 and shunt capacitance
C24, C41 are used for accepting the signal of main control chip U2 and drive alarm lamp.U41 is supplied by series connection VCC
Electricity, shunt capacitance C27 plays pressure stabilization function.Motor speed and direction output port string pull-up resistor R14,
R15, goes back parallel connection filter capacitor C25, C26.U42 accesses VCC and powers, and shunt capacitance C39 comes steady
Pressure, shunt capacitance C40 carrys out filtering interfering, it is ensured that waveform is undistorted.
Claims (6)
1. an ECU for vehicle electric parking system, including power module, signal processing module,
BDM debugging module, Clock generation module, motor drive module, power module U1 and main control module
U2, it is characterised in that: described power module is for being converted to access electricity by the+12V voltage that automobile provides
The voltage that road and access circuit internal component can use；Described signal processing module is used for gathering electricity
The rotating speed of machine and direction signal；Described BDM debugging module is used for making reseting port be in high level state；
Described Clock generation module is for providing clock reference to main control module U2 and and initializing；Institute
State motor drive module for accepting the control signal of main control chip U2 and controlling rotating speed and the side of motor
To.
The ECU of vehicle electric parking system the most according to claim 1, it is characterised in that:
Described power module include filter capacitor C1, filter capacitor C2, filter capacitor C3, filter capacitor C4,
Filter capacitor C5, filter capacitor C6, filter capacitor C7, power conversion chip U1, CAN chip
After L1 and triode Q1, described filter capacitor C1, filter capacitor C2 and filter capacitor C3 parallel connection with
Pin VSUP1 and VSUP2 of power conversion chip U1 connects, the emitter stage of described triode Q1 with
The pin VB of power conversion chip U1 connects, the base stage of described triode Q1 and power conversion chip U1
Pin VE connect, be connected to triode Q1 after described filter capacitor C6 and filter capacitor C7 parallel connection
Colelctor electrode, the pin CANH and pin CANL of described CAN chip L1 and power conversion chip U1
Being connected, after described filter capacitor C4 and C5 parallel connection, the pin V-AUX with power conversion chip U1 is connected.
The ECU of vehicle electric parking system the most according to claim 1, it is characterised in that:
Described signal processing module include terminal CZ1, resistance R10, resistance R11, resistance R12, resistance R13,
Resistance R14, resistance R15, p-type triode Q11, triode Q12, electric capacity C21, electric capacity C22,
Electric capacity C23, electric capacity C24, electric capacity C25, electric capacity C26, electric capacity C27, electric capacity C39, electric capacity C40,
Electric capacity C41, velocity sensor U41 and displacement transducer U42, the transmitting of described p-type triode Q11
Pole is connected with power supply VCC, one end of described resistance R11 is connected with the colelctor electrode of p-type triode Q11,
Other end ground connection, one end of described electric capacity C23 is connected with the colelctor electrode of p-type triode Q11, another
End ground connection, the colelctor electrode of described p-type triode Q11 is connected with main control chip U2, described electric capacity C21
One end be connected with the pin EPB of terminal CZ1, other end ground connection, one end of described resistance R10 with
The pin EPB of terminal CZ1 is connected, the other end is connected with the base stage of p-type triode Q11, and described three
The grounded emitter of pole pipe Q12, the colelctor electrode of described triode Q12 and the pin Switch of terminal CZ1
Lamp is connected, and one end of described electric capacity C22 is connected with the pin Switch Lamp of terminal CZ1, separately
One end ground connection, one end of described resistance R12 is connected by the base stage of resistance R13 and triode Q12,
The other end ground connection of described resistance R12, one end of described electric capacity C24 simultaneously with resistance R13 and resistance
R12 is connected, the other end ground connection of described electric capacity C24, described velocity sensor U41 and main control chip
U2 is connected and passes through resistance R14, resistance R15, electric capacity C25, electric capacity C26 and electric capacity C27 voltage stabilizing
And filtering, institute displacement sensors U42 is connected with main control chip U2 and filters dry by electric capacity C40
Disturb and ensure that waveform is undistorted and passes through electric capacity C39 voltage stabilizing.
The ECU of vehicle electric parking system the most according to claim 1, it is characterised in that:
Described BDM debugging module includes BDM debugging interface JBDM, resistance R16 and electric capacity C30, described BDM
The pin 1 of debugging interface JBDM accesses the debugging stitch BKGD of main control chip U2 and by resistance R16
And by electric capacity C30 voltage stabilizing.
The ECU of vehicle electric parking system the most according to claim 1, it is characterised in that:
Described Clock generation module includes crystal oscillator X1, resistance R17, electric capacity C28 and electric capacity C29, described crystal oscillator
X1 is in parallel with resistance R17, the equal ground connection in one end of described electric capacity C28 and electric capacity C29, described electric capacity C28
It is respectively connecting to crystal oscillator X1 two ends with the other end of electric capacity C29.
The ECU of vehicle electric parking system the most according to claim 1, it is characterised in that:
Described motor drive module includes Half-bridge motor driving chip U31, Half-bridge motor driving chip U32, electricity
Hold C31, electric capacity C32, electric capacity C33, electric capacity C34, electric capacity C35, electric capacity C36, electric capacity C37,
Electric capacity C38, resistance R21, resistance R23, resistance R24, resistance R25, resistance R26, resistance R27,
Resistance R29, resistance R30, resistance R31 and resistance R32, described Half-bridge motor driving chip U31 and
Half-bridge motor driving chip U32 series connection and Half-bridge motor driving chip U31 and Half-bridge motor drive
Chip U32 all accesses upper end 12V power supply, lower end ground connection, 12V power supply electric capacity C31, electricity in parallel
Hold C32, electric capacity C33 and electric capacity C36 filters harmonic wave and voltage stabilizing, 12V plant-grid connection Half-bridge motor
Driving chip U31 and the pin 7 of Half-bridge motor driving chip U32, Half-bridge motor driving chip U31 and
The equal ground connection of pin 1 of Half-bridge motor driving chip U32, main control chip U2 output signal IN_A, output
Signal INH_A, output signal IN_B, output signal INH_B respectively by series resistance resistance R23,
Resistance R24, resistance R29, resistance R30 input is driven to Half-bridge motor driving chip U31 and Half-bridge motor
Move chip U32, be pulled down to ground through resistance R25, resistance R26, resistance R31 and resistance R32 simultaneously,
Motor drive signal MA of output and the motor drive signal MB shunt capacitance C37 and electric capacity C38 of output,
Half-bridge motor driving chip U31 and the current feedback signal shunt capacitance of Half-bridge motor driving chip U32
C34 and electric capacity C35, simultaneously connecting resistance R21 and resistance R27.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224267.8A CN105867224A (en) | 2016-04-12 | 2016-04-12 | Electric control unit of automotive electronic parking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224267.8A CN105867224A (en) | 2016-04-12 | 2016-04-12 | Electric control unit of automotive electronic parking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105867224A true CN105867224A (en) | 2016-08-17 |
Family
ID=56637143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610224267.8A Pending CN105867224A (en) | 2016-04-12 | 2016-04-12 | Electric control unit of automotive electronic parking system |
Country Status (1)
| Country | Link |
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| CN (1) | CN105867224A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109032020A (en) * | 2018-08-03 | 2018-12-18 | 中国汽车工程研究院股份有限公司 | A kind of gateway simulation resolver system for new-energy automobile |
| CN110206637A (en) * | 2019-05-07 | 2019-09-06 | 一汽解放汽车有限公司 | A kind of engine pneumatic actuator driving circuit for electromagnetic valve and control method |
-
2016
- 2016-04-12 CN CN201610224267.8A patent/CN105867224A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109032020A (en) * | 2018-08-03 | 2018-12-18 | 中国汽车工程研究院股份有限公司 | A kind of gateway simulation resolver system for new-energy automobile |
| CN109032020B (en) * | 2018-08-03 | 2023-06-09 | 中国汽车工程研究院股份有限公司 | Gateway simulation analyzer system for new energy automobile |
| CN110206637A (en) * | 2019-05-07 | 2019-09-06 | 一汽解放汽车有限公司 | A kind of engine pneumatic actuator driving circuit for electromagnetic valve and control method |
| CN110206637B (en) * | 2019-05-07 | 2021-07-09 | 一汽解放汽车有限公司 | Electromagnetic valve driving circuit of engine pneumatic actuator and control method |
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Application publication date: 20160817 |
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