Layered control architecture and method of electro-hydraulic hybrid braking system with integrated brake master cylinder
An electro-hydraulic composite and brake control technology, which is applied in the direction of brake transmission, brake, transportation and packaging, etc., can solve the problems that the structure of the integrated master cylinder electro-hydraulic composite brake system cannot be applied, and achieve scalability and applicability good sex effect
Active Publication Date: 2017-04-12
TONGJI UNIV
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Problems solved by technology
[0006] Most of the above system control methods are aimed at the respective brake system structures, and cannot be applied to the proposed electro-hydraulic composite brake system structure using an integrated master cylinder. Therefore, an electro-hydraulic brake system suitable for an integrated master cylinder is proposed. Layered control architecture and control method of compound braking system
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[0051] The layered control architecture of the electro-hydraulic composite braking system suitable for the integrated brake master cylinder, the structure is as follows figure 1 As shown, it includes the upper electro-hydraulic composite brake control unit and the lower hydraulic control unit.
[0052] The upper layer electro-hydraulic compound brake control unit is composed of an analog quantity processing circuit 102, a digital quantity processing circuit 103, a power supply module 104, a microprocessor 101, a pump drive circuit 105, a valve drive circuit 106, a status indication 107 and a communication module 108, wherein The analog processing circuit 102, the digital processing circuit 103, and the power supply module 104 input signals to the microprocessor 101, and the microprocessor 101 sends the pump driving circuit 105, the valve driving circuit 106, the status indication 107, the communication module 108 and the microprocessor 101 Connect and exchange information with...
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The invention relates to an electro-hydraulic composite braking system hierarchical control structure and method suitable for an integrated braking cylinder. The hierarchical control structure comprises an upper layer electro-hydraulic composite braking control unit and a lower layer hydraulic control unit. The upper layer electro-hydraulic composite braking control unit is in communication with the lower layer hydraulic control unit through a whole vehicle control system, the current running state of a vehicle is obtained, braking force distribution and stability control are achieved, needed wheel cylinder target pressure is sent to a lower layer hydraulic adjusting unit for real-time adjusting, and wheel cylinder practical pressure is sent to the upper layer electro-hydraulic composite braking control unit. Control system modularization is achieved, hierarchical design is achieved, software and hardware independent design, debugging, installing and testing are convenient, vehicle stability control can be integrated, the structure can be combined with regeneration braking to form an electro-hydraulic composite braking system, and the structure and the method can be widely suitable for braking systems of a pure electric vehicle, a hybrid power vehicle and a fuel cell vehicle.
Description
technical field [0001] The invention relates to a control framework and method of an automobile braking system, in particular to a layered control framework and control method of an electro-hydraulic composite braking system suitable for an integrated brake master cylinder. Background technique [0002] The powertrain of new energy vehicles such as pure electric vehicles, hybrid electric vehicles and fuel cell electric vehicles all use the motor-battery as the core to form an electric drive system. Kinetic energy recovery function. The use of regenerative braking can effectively recover the energy originally dissipated as heat energy during vehicle braking, and improve the energy utilization efficiency, fuel economy and emission performance of new energy vehicles. Since the motor feedback braking torque is limited by the external characteristics of the motor and the charging characteristics of the battery, it cannot meet the vehicle braking requirements on roads with high a...
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IPC IPC(8): B60T8/60B60T8/17B60T13/58B60T13/68
Inventor 孙泽昌刘杨冀文斌
Owner TONGJI UNIV