Drive-by-wire redundancy braking system for high-level automatic driving

Abstract

The invention discloses a drive-by-wire redundancy braking system for high-level automatic driving, which comprises a three-outlet liquid storage tank, a hydraulic control system, a hydraulic control system and a hydraulic control system, the brake pedal is used for operating a brake action; a piston of the double-cavity tandem type pedal main cylinder is fixedly connected with the brake pedal operating handle and is used for providing initial brake pressure, and the connecting end of the double-cavity tandem type pedal main cylinder is communicated with the connecting end of the three-outlet liquid storage tank through a pipeline. The double-winding hollow shaft motor assembly is internally provided with the first double-winding hollow shaft motor winding and the second double-winding hollow shaft motor winding, and the electronic control unit ECU also comprises the auxiliary controller ECU and the main controller ECU, so that when the first double-winding hollow shaft motor winding fails, the second double-winding hollow shaft motor winding is involved in time; and when the auxiliary controller ECU fails, the main controller ECU of the motor control part also intervenes in time, so that the effectiveness of all braking functions can be ensured, and accidents are avoided.

Description

technical field [0001] The invention relates to the field of electronic braking systems, in particular to a wire-controlled redundant braking system for high-level automatic driving. Background technique [0002] In order to comply with the development of automobile electrification and intelligence, the braking system of automobiles is tending to the trend of integrated design. For traditional fuel vehicles, the automotive braking system generally adopts the "vacuum booster + ESC (electronic stability control system)" scheme, and for new energy vehicles, the "booster (electrically controlled brake booster) + ESC" scheme is often used. , the above solutions can be collectively referred to as a distributed braking system, namely TWOBOX. The latest brake system configuration is to integrate "booster (electrically controlled brake booster) + ESC" into an integrated mechanism, which can achieve the same function and have cost and weight advantages. This configuration is called ...

AI Technical Summary

Problems solved by technology

[0003] However, when the existing technology is actually used, the basic braking function will fail when the motor fails, and when the controller, motor, solenoid valve, etc. fail, it is difficult for the driver to perform emergency braking through the mechanical structure, that is, the existing scheme does not have With multiple redundant braking functions, the vehicle is prone to accidents when electronic components fail

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