Distributed type autonomous braking system with parking function and control method

A technology of autonomous braking and braking controller, applied in the direction of braking safety system, brake, braking transmission device, etc., can solve the problems of low safety performance and lack of failure protection function, and achieve low cost and strong failure protection ability , The effect of short pressure build-up time

CN110803149APending Publication Date: 2020-02-18南京经纬达汽车科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-02-18

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Abstract

The invention relates to the technical field of vehicle brake control systems, and particularly provides a distributed type autonomous braking system with a parking function and a control method. Thesystem comprises a power supply, a brake controller and wheel brakes, and further comprises at least three electric cylinders which are connected with the wheel brakes and form brake loops; each electric cylinder comprises an electric cylinder body, a piston arranged in the electric cylinder body in a sliding manner, a motor for driving the piston to slide by a screw pair arranged in the electriccylinder body and a liquid storage pot connected with the electric cylinder body; the motors are electrically connected with the brake controller; each screw pair comprises a nut driven by the corresponding motor and a screw connected with the corresponding piston; and the electric cylinders are connected to the wheel brakes with the same number on an automobile in a one-to-one correspondence manner, and each electric cylinder and the corresponding wheel brake form one brake loop. Compared with the prior art, the system has a failure protection function, higher safety performance, the parkingfunction, simple structure and lower cost.
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Description

technical field

[0001] The invention relates to the technical field of vehicle braking control systems, in particular to a distributed autonomous braking system with a parking function and a control method. Background technique

[0002] Automobile braking system is closely related to automobile driving safety. In the hydraulic braking system of traditional automobiles, the driver applies braking pressure to the wheel cylinders of each wheel brake by depressing the brake pedal, so as to achieve braking and decelerate the vehicle. Smart car systems such as advanced driver assistance systems (ADAS) and automated driving systems (ADS) require braking systems that can autonomously brake the vehicle, that is, apply the brakes to some or all of the wheels without depressing the brake pedal.

[0003] At present, most of the brake systems that can implement autonomous braking use electric power assist, and retain brake control devices such as brake pedals. For the development of un...

Examples

Embodiment Construction

[0035] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0036] Such as figure 1 and figure 2 As shown, a distributed autonomous braking system and control method with parking function, including a power supply 1 and a braking controller 2, and at least three electric cylinders electrically connected to the braking controller 2. Each electric cylinder includes an electric cylinder body 316, a piston 312 slidingly arranged in the electric cylinder body 316, a motor 301 driving the sliding of the piston 312, and a liquid storage tank 315 connected with the electric cylinder body 316, and the motor 301 and The brake controller 2 is electrically connected.

[0037] The electric cylinders are connected to the same number of wheel brakes on the vehicle in one-to-one correspondence, and each electric cylinder forms a braking circuit with a corresponding wheel brake. In the present invention, the number of electri...