CN203766763U - Hierarchical control framework suitable for electrical-hydraulic composite brake system with integrated brake master cylinder - Google Patents
Hierarchical control framework suitable for electrical-hydraulic composite brake system with integrated brake master cylinder Download PDFInfo
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- CN203766763U CN203766763U CN201420054912.2U CN201420054912U CN203766763U CN 203766763 U CN203766763 U CN 203766763U CN 201420054912 U CN201420054912 U CN 201420054912U CN 203766763 U CN203766763 U CN 203766763U
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Abstract
The utility model relates to a hierarchical control framework suitable for an electrical-hydraulic composite brake system with an integrated brake master cylinder. The hierarchical control framework comprises an upper-layer vehicle control network, a core-layer electrical-hydraulic composite brake coordinated control unit and a lower-layer hydraulic control unit. The upper-layer vehicle control network is composed of vehicle-level key control components such as a vehicle controller, a motor controller and a battery management system. The core-layer electrical-hydraulic composite brake coordinated control unit is composed of a sensor processing module, a power module, a microprocessor, a drive output module and a communication module. The lower-layer hydraulic control unit is composed of a sensor processing module, a power module, a microprocessor and a drive output module. According to the hierarchical control framework suitable for the electrical-hydraulic composite brake system with the integrated brake master cylinder, the modular and hierarchical design of the control system is achieved, independent design, independent debugging, independent installation and independent testing of hardware and software are facilitated, stable vehicle control can be integrated, the electrical-hydraulic composite brake system can also be formed by combining the vehicle stable control with regenerative brake, and the hierarchical control framework can be widely applied to blade electric vehicle brake systems, hybrid power vehicle brake systems and fuel cell vehicle brake systems.
Description
Technical field
The utility model relates to brake system of car control framework, especially relates to a kind of Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder.
Background technology
The new-energy automobile dynamic assemblies such as pure electronic, hybrid power and fuel cell electric vehicle have all formed electric propulsion system taking electrical motor-storage battery as core, and in the time of car brakeing, electrical motor, taking generation mode work and as battery charge, possesses braking energy recovering function.While adopting regenerative braking effectively to reclaim car brakeing, script, with the energy of thermal dissipation, improves energy utilization efficiency, the fuel consumption and emission performance of new-energy automobile.Because electromotor feedback braking torque is subject to motor total external characteristics and battery charge characteristic limitations, on higher adhesion value road surface or when high speed emergency braking, cannot meet car brakeing demand.The Electro-hydraulic brake system of the formation that combines with mechanical friction braking, can give full play to both advantages.Electro-hydraulic brake system not only improves speed of response and the control accuracy of car load brake system, is conducive to ensure car brakeing safety, has also reduced frequency of utilization and the intensity of mechanical braking friction lining, the service life of prolonged mechanical brake system.
Can form Electro-hydraulic brake with regenerative brake except meeting, also need to consider vehicle stability demand for control, as integrated in functions such as ABS/TCS/ESP with realize, for this reason, proposed the brake system structure that satisfies the demands both at home and abroad and developed successively new controller architecture.Abroad mostly transform and upgrade on its existing brake system basis by car production manufacturer and brake safe components supplying business, and successfully for new-energy automobile, as having developed on electronic stability program VSC basis, Toyota can coordinate the electrically controlled brake system ECB controlling with hydraulic braking, be successfully applied to Prius vehicle, and regenerate and constantly upgrading improvement with Prius vehicle; Nissan has designed by motor and speed reduction gearing, ball-screw and bearing and has formed the master brake cylinder that forms electric boosted mechanism, and this has been proposed to realize by controlling the hand of rotation of assist motor and speed the control system of master cylinder pressure; Hitachi has developed the electricity that possesses electronic auxiliary actr e-ACT (Electrically-assisted Actuation) and has driven Intelligent brake control system EDiB (Electrically-Driven intelligent Brake system); MOBIS, for realizing brake-by-wire and Electro-hydraulic brake, has provided the control system of front axle intelligent booster formula brake master cylinder assembly FSB (Front Smart Booster) and twin shaft intelligent booster formula brake master cylinder assembly FRSB (Front-Rear Smart Booster).
Above-mentioned control system, mostly for brake system structure separately, cannot be applicable to the Electro-hydraulic brake system architecture of the employing integral type master cylinder proposing, and for this reason, has proposed a kind of Electro-hydraulic brake system layer control framework that is applicable to integral type master brake cylinder.
Utility model content
The purpose of this utility model is exactly to provide a kind of three-decker design in order to overcome the defect that above-mentioned prior art exists, and possesses the Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder that multiple-working mode and mode of operation are switched.
The purpose of this utility model can be achieved through the following technical solutions:
Be applicable to the Electro-hydraulic brake system layer control framework of integral type master cylinder, comprise upper strata whole-vehicle control network, core layer Electro-hydraulic brake coordination control unit and lower floor's hydraulic control unit that communication connects,
Described upper strata whole-vehicle control network is made up of integrated entire car controller, electric machine controller and battery management system, is provided with the communication interface being connected with core layer Electro-hydraulic brake control unit in the whole-vehicle control network of upper strata;
Described core layer Electro-hydraulic brake control unit is made up of integrated sensor processing module, power module, microprocessor, driver output module and communication module, described communication module at least comprises two interfaces, realizes command and data exchange respectively with upper strata whole-vehicle control network and lower floor's hydraulic control unit;
Described lower floor's hydraulic control unit is made up of integrated sensor processing module, power module, microprocessor, driver output module.
Described upper strata whole-vehicle control network is through entire car controller, electric machine controller and battery management system incoming communication network.
The sensor processing module of described core layer Electro-hydraulic brake control unit is the module that collection driver brakes intention, integral type master cylinder operation pressure and vehicle stability information, signal is sent into the microprocessor of core layer Electro-hydraulic brake control unit after finishing dealing with
The driver output module of described core layer Electro-hydraulic brake control unit is accepted microprocessor control, and driver output comprises that pump drives and solenoid-driven.
The driver's braking gathering is intended to brake pedal displacement transducer signal,
The integral type master cylinder operation pressure gathering is integral type master cylinder hydraulic pressure sensor signal,
The vehicle stability information gathering is each wheel wheel speed sensor signal, yaw-rate sensor signal, vertical/horizontal acceleration transducer signals.
Described pump drives at least possesses a road power-handling capability, and described solenoid-driven at least possesses two-way power-handling capability.
The each wheel cylinder hydraulic pressure transducer of the sensor processing module acquisition process signal of described lower floor's hydraulic control unit, signal is sent into the microprocessor of lower floor's hydraulic control unit after finishing dealing with.
The driver output module of described lower floor's hydraulic control unit is accepted microprocessor control output and is driven, and comprises that pump drives and valve drives two parts, and described valve drive part at least contains eight road power-handling capabilities.
The power module of described core layer Electro-hydraulic brake control unit comprises reference power supply, power supply and driving power power supply three parts, is the power supply of core layer Electro-hydraulic brake control unit.
The power module of described lower floor's hydraulic control unit comprises reference power supply, power supply and driving power power supply three parts, is lower floor's hydraulic control unit power supply.
Compared with prior art, the utlity model has following advantage:
1) design upper strata whole-vehicle control network, core layer Electro-hydraulic brake control unit and lower floor's hydraulic control unit hierarchical control framework, realized modular design;
2) core layer Electro-hydraulic brake control unit is designed with stability control sensor interface, can carry out the realization of ABS/TCS/ESP algorithm;
3) core layer Electro-hydraulic brake control unit possesses failure mode, can under failure mode, ensure car brakeing safety;
4) core layer Electro-hydraulic brake control unit can be resolved driver operation signal or be accepted whole-control system braking instruction, can be used for Vehicular intelligent drive assist system or autonomous land vehicle;
5) whether lower floor's hydraulic pressure regulon can normally adopt closed loop, open loop control policy according to hydraulic pressure transducer, meets braking requirement;
6) extendability and applicability are good, and the system architecture of developing is the new-energy automobile such as widespread use pure electric automobile, hybrid vehicle and fuel cell powered vehicle not only, can also be used for conventional truck.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: V000, upper strata whole-vehicle control network; V001, entire car controller; V002, electric machine controller; V003, battery management system;
100, core layer Electro-hydraulic brake control unit; 101, microprocessor; 102, sensor processing module; 1021, driver brakes intention collection; 1022, integral type master cylinder operation pressure gathers; 1023, vehicle stability information acquisition; 103, driver output module; 1031, pump drives; 1032, valve drives; 104, power module; 1041, reference power supply; 1042, power supply; 1043, driving power power supply; 105, communication module;
200, lower floor's hydraulic control unit; 201, microprocessor; 202, sensor processing module; 203, driver output module; 2031, pump drives; 2032, valve drives; 204, power module; 2041, reference power supply; 2042, power supply; 2043, driving power power supply; 205, communication module.
Fig. 2 is the structural representation of the utility model application.
In figure, 300, oil cabinet; 301, brake pedal; 302, pedal displacement sensor; 303, pre-press pump; 304, high pressure accumulator; 305, normally open solenoid valve; 306, pressure sensor, 307, normally closed solenoid valve; 308, pedal sense simulator; 401, dump pump; 402, oil-feed electromagnetic valve; 403, go out solenoid; 404, low pressure accumulator; 405, pressure sensor; 406, wheel speed sensors; 407, wheel.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment
The utility model system architecture as shown in Figure 1, adopts three-decker design, comprises upper strata whole-vehicle control network V000, core layer Electro-hydraulic brake coordination control unit 100 and lower floor's hydraulic control unit 200.
Upper strata whole-vehicle control network V000 is made up of the crucial function unit of the car load levels such as entire car controller V001, electric machine controller V002 and battery management system V003 upper strata whole-vehicle control network.
Core layer Electro-hydraulic brake control unit 100 is made up of microprocessor 101, sensor processing module 102, power module 104, driver output module 103 and communication module 105, wherein, sensor processing module 102 comprises that driver brakes intention collection 1021, the collection 1022 of integral type master cylinder operation pressure and vehicle stability information acquisition 1,023 three parts; Driver output module 103 comprises pump driving 1031 and valve drives 1032 two parts; Power module 104 all comprises reference power supply 1041, power supply 1042 and driving power power supply 1,043 three parts, reference power supply 1041 provides voltage reference for microprocessor 101 analogue to digital conversions, power supply 1042 provides power supply for microprocessor 101, sensor processing module 102, driver output module 103 and communication module 105, ensure each several part signal control demand, driving power power supply 1043 meets driver output module 103 high-power driving demands.
Lower floor's hydraulic control unit 200 is made up of microprocessor 201, sensor processing module 202, power module 204, driver output module 203 and communication module 205, and wherein, driver output module 203 comprises pump driving 2031 and valve drives 2032 two parts; Power module 204 all comprises reference power supply 2041, power supply 2042 and driving power power supply 2,043 three parts, specifically can be with reference to power module 104.
Core layer Electro-hydraulic brake control unit 200 carries out communication by communication interface 205 and the communication module 105 of upper strata whole-vehicle control network V000 and lower floor's hydraulic control unit 100.
Basic functional principle of the present utility model is as follows: upper strata whole-vehicle control network V000 carries out car load operation control and management by entire car controller V001, electric machine controller V002 and battery management system V003, and obtaining the real time execution information of vehicle and critical component, torque control is carried out in the regenerative brake instruction of sending according to core layer Electro-hydraulic brake control unit 100, core layer Electro-hydraulic brake control unit 100 by with whole-vehicle control network V000 and lower floor's hydraulic pressure regulon 200 communications, obtain respectively the current running state of vehicle and pressure of wheel braking cylinder information, and obtain driver operation signal and integral type master cylinder working signal and vehicle stability signal by sensor processing module 102, and control the switch motion of integral type master cylinder pump and valve by driver output module 103, maintaining integral type master cylinder normally works, after comprehensive treatment, realize brakig force distribution and stability control according to driver operation intention or car load control command, each required wheel cylinder goal pressure and regenerative brake torque instruction are sent to respectively to lower floor's hydraulic pressure regulon 200 and upper strata whole-vehicle control network V000, lower floor's hydraulic pressure regulon 200 is accepted each wheel cylinder goal pressure of core layer Electro-hydraulic brake control unit 100, obtain vehicle pressure of wheel braking cylinder and control dump pump and electromagnetic valve is realized the real-time adjusting to pressure of wheel braking cylinder by driver output module 203 according to sensor processing module 202, and wheel cylinder actual pressure is sent to core layer Electro-hydraulic brake control unit 100 by communication module 205, upper strata whole-vehicle control network V000 realizes regenerative brake control by V101, and actual reproduction braking torque is issued to core layer Electro-hydraulic brake control unit 100.
Electro-hydraulic brake system in conjunction with the employing integral type master cylinder shown in Fig. 2 is embodiment, taking forerunner's pure electric automobile as application, further illustrates the Electro-hydraulic brake system layer control framework that adopts integral type master brake cylinder.
As shown in Figure 2, embodiment adopts the Electro-hydraulic brake system of integral type master cylinder to be made up of integral type master cylinder and hydraulic actuator, and integral type master cylinder is made up of oil cabinet 300, brake pedal 302, pedal displacement sensor 302, pre-press pump 303, high pressure accumulator 304, normally open solenoid valve 305, hydraulic pressure transducer 306, normally closed solenoid valve 307, pedal sense simulator 308, push-rod piston 309, boosting piston 310, ante-chamber piston 311, ante-chamber spring 312, back cavity piston 313 and back cavity spring 314; Hydraulic actuator by dump pump 401, oil-feed electromagnetic valve 402, go out solenoid 403, low pressure accumulator 404 and hydraulic pressure transducer 405.
Upper strata whole-vehicle control network V000 obtains vehicle operating information, as essential informations such as the speed of a motor vehicle, motor torque, motor speed, motor temperature, cell pressure, battery current, battery SOC and battery temperatures, and carry out communication with core layer Electro-hydraulic brake control unit 100.The driver of core layer Electro-hydraulic brake control unit 100 sensor processing modules 102 brakes intention and gathers 1021 processing brake pedal displacement pickups 302, integral type master cylinder operation pressure gathers 1022 and processes integral type master cylinder hydraulic pressure sensor 306 signals, the signals such as wheel wheel speed sensors 406, yaw-rate sensor, vertical/horizontal acceleration pick-up are processed in vehicle stability information acquisition 1023, and signal is sent into microprocessor 101 after finishing dealing with; The pump of Electro-hydraulic brake control unit 100 driver output modules 103 drives the pre-press pump 303 of 1031 control to work, and is high pressure accumulator 304 build-up pressures; The valve of Electro-hydraulic brake control unit 100 driver output modules 103 drives 1032 to control normally open solenoid valve 305, normally closed solenoid valve 307 on off states.Lower floor's hydraulic control unit 200 sensor processing modules 201 gather hydraulic pressure transducer 405, and by the microprocessor 201 of making a gift to someone of signal after processing; The pump of lower floor's hydraulic control unit 200 driver output modules 203 drives 2031 to drive dump pump 401 that oil pump is returned, and valve drives 2032 control oil-feed electromagnetic valves 402, goes out solenoid 403 to regulate pressure of wheel braking cylinder.
After Electro-hydraulic brake system powers on, now, do not step on brake pedal 301, normally open solenoid valve 305 and normally closed solenoid valve 307 drive under 1032 effects and all close at core layer Electro-hydraulic brake control unit 100 valves, pre-press pump 303 drives 1031 work at core layer Electro-hydraulic brake control unit 100 pumps, set up high pressure at high pressure accumulator 304, core layer Electro-hydraulic brake control unit 100 gathers pressure sensor 306 signals through sensor processing module 102, maintains high pressure accumulator 304 pressure stabilitys; Oil-feed electromagnetic valve 402 and go out solenoid 403 and drive under 2032 effects respectively in opening and closing state at the valve of lower floor's hydraulic control unit 200, dump pump 401 drives under 2031 effects and quits work at the pump of lower floor's hydraulic control unit 200.
The information that core layer Electro-hydraulic brake control unit 100 microprocessors 101 obtain according to vehicle stability information acquisition 1023 judges whether vehicle gets involved stability control, as when occurring entering abs mode while having monitored wheel lockup trend, while there is ovdersteering or understeer, enter ESP pattern, otherwise carry out conventional brake.Maximize for realizing regenerating braking energy, core layer Electro-hydraulic brake control unit 100 controls network V000 according to upper strata and lower floor's hydraulic control unit 200 obtains vehicle and critical component operation information, in the time that regenerative brake meets braking requirement, carry out pure regenerative brake, lower floor's hydraulic control unit 200 keeps initial condition, in the time that braking requirement intensity exceedes maximum regeneration braking force scope, enter Electro-hydraulic brake mode of operation, lower floor's hydraulic pressure regulon 200 is after communication module 205 obtains wheel cylinder goal pressure that core layer Electro-hydraulic brake control unit 100 sends, gather wheel cylinder hydraulic pressure transducer 405 signals as feedback through sensor processing module 202, drive 2032 pairs of oil-feed electromagnetic valves 402 and go out solenoid 403 by valve and regulate in real time, to reach goal pressure, drive 2031 pairs of dump pumps 401 to control through pump simultaneously, simultaneously, wheel cylinder actual pressure is sent to core layer Electro-hydraulic brake control unit 100 in real time through communication module 205, when upper strata whole-vehicle control network V000 occurs that drive motor is overheated, power brick temperature is too low or too high, SOC is when crossing high situation and occurring, can not carry out regenerative brake, enter pure hydraulic braking mode of operation, pressure of wheel braking cylinder control method is identical with Electro-hydraulic brake mode of operation.
Any on basis of the present utility model structure after simple transformation all belong to protection domain of the present utility model.
Claims (9)
1. the Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder, is characterized in that, comprises upper strata whole-vehicle control network, core layer Electro-hydraulic brake coordination control unit and lower floor's hydraulic control unit that communication connects,
Described upper strata whole-vehicle control network is made up of integrated entire car controller, electric machine controller and battery management system, is provided with the communication interface being connected with core layer Electro-hydraulic brake control unit in the whole-vehicle control network of upper strata;
Described core layer Electro-hydraulic brake control unit is made up of integrated sensor processing module, power module, microprocessor, driver output module and communication module, described communication module at least comprises two interfaces, realizes command and data exchange respectively with upper strata whole-vehicle control network and lower floor's hydraulic control unit;
Described lower floor's hydraulic control unit is made up of integrated sensor processing module, power module, microprocessor, driver output module.
2. a kind of Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder according to claim 1, is characterized in that, described upper strata whole-vehicle control network is through entire car controller, electric machine controller and battery management system incoming communication network.
3. a kind of Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder according to claim 1, is characterized in that,
The sensor processing module of described core layer Electro-hydraulic brake control unit is the module that collection driver brakes intention, integral type master cylinder operation pressure and vehicle stability information, signal is sent into the microprocessor of core layer Electro-hydraulic brake control unit after finishing dealing with
The driver output module of described core layer Electro-hydraulic brake control unit is accepted microprocessor control, and driver output comprises that pump drives and solenoid-driven.
4. a kind of Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder according to claim 3, is characterized in that,
The driver's braking gathering is intended to brake pedal displacement transducer signal,
The integral type master cylinder operation pressure gathering is integral type master cylinder hydraulic pressure sensor signal,
The vehicle stability information gathering is each wheel wheel speed sensor signal, yaw-rate sensor signal, vertical/horizontal acceleration transducer signals.
5. a kind of Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder according to claim 3, is characterized in that, described pump drives at least possesses a road power-handling capability, and described solenoid-driven at least possesses two-way power-handling capability.
6. a kind of Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder according to claim 1, it is characterized in that, the each wheel cylinder hydraulic pressure transducer of the sensor processing module acquisition process signal of described lower floor's hydraulic control unit, signal is sent into the microprocessor of lower floor's hydraulic control unit after finishing dealing with.
7. a kind of Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder according to claim 1, it is characterized in that, the driver output module of described lower floor's hydraulic control unit is accepted microprocessor control output and is driven, comprise that pump drives and valve drives two parts, described valve drive part at least contains eight road power-handling capabilities.
8. a kind of Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder according to claim 1, it is characterized in that, the power module of described core layer Electro-hydraulic brake control unit comprises reference power supply, power supply and driving power power supply three parts, is the power supply of core layer Electro-hydraulic brake control unit.
9. a kind of Electro-hydraulic brake system layer control framework that is applicable to integral type master cylinder according to claim 1, it is characterized in that, the power module of described lower floor's hydraulic control unit comprises reference power supply, power supply and driving power power supply three parts, is lower floor's hydraulic control unit power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420054912.2U CN203766763U (en) | 2014-01-28 | 2014-01-28 | Hierarchical control framework suitable for electrical-hydraulic composite brake system with integrated brake master cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420054912.2U CN203766763U (en) | 2014-01-28 | 2014-01-28 | Hierarchical control framework suitable for electrical-hydraulic composite brake system with integrated brake master cylinder |
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| CN203766763U true CN203766763U (en) | 2014-08-13 |
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| CN201420054912.2U Expired - Fee Related CN203766763U (en) | 2014-01-28 | 2014-01-28 | Hierarchical control framework suitable for electrical-hydraulic composite brake system with integrated brake master cylinder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104484534A (en) * | 2014-12-25 | 2015-04-01 | 湖北航天技术研究院特种车辆技术中心 | Modularized design method for braking system for vehicle |
| CN110001610A (en) * | 2019-04-23 | 2019-07-12 | 岭南师范学院 | A kind of four-wheel independent hub electric car composite braking control device |
| CN111196270A (en) * | 2020-01-22 | 2020-05-26 | 辽宁工业大学 | Turning control method for electric-hydraulic composite braking system of electric automobile |
-
2014
- 2014-01-28 CN CN201420054912.2U patent/CN203766763U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104484534A (en) * | 2014-12-25 | 2015-04-01 | 湖北航天技术研究院特种车辆技术中心 | Modularized design method for braking system for vehicle |
| CN104484534B (en) * | 2014-12-25 | 2017-11-14 | 湖北航天技术研究院特种车辆技术中心 | A kind of modular design method of vehicles brakes |
| CN110001610A (en) * | 2019-04-23 | 2019-07-12 | 岭南师范学院 | A kind of four-wheel independent hub electric car composite braking control device |
| CN111196270A (en) * | 2020-01-22 | 2020-05-26 | 辽宁工业大学 | Turning control method for electric-hydraulic composite braking system of electric automobile |
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Granted publication date: 20140813 Termination date: 20200128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |