A vehicle brake pressure regulation method based on pneumatic brake-by-wire system
A brake-by-wire and air pressure technology, which is applied in the braking safety system, electric braking system, braking transmission device, etc., can solve the problem of slow braking response time when opening
Active Publication Date: 2021-01-05
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology
[0003] Based on the above-mentioned status quo, the main purpose of the present invention is to provide a calibration method and acquisition device based on the pressure increase and decrease characteristics of the air pressure brake-by-wire system, a vehicle brake pressure regulation method, and a control method for the vehicle brake system to solve The problem of slow braking response caused by the complex calculation of time when the intake valve and exhaust valve of the brake chamber need to be opened
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[0061] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the present invention, some specific details are described in detail, and in order to avoid obscuring the essence of the present invention, known methods, procedures, procedures, and components are not described in detail.
[0062] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
[0063] Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.
[0064] In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purp...
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The invention provides a calibration method and an acquisition device for the pressure increase and decrease characteristics of the air pressure-by-wire brake system, a vehicle brake pressure regulation method, and a control method for the vehicle brake system. Control the braking system, the increase and decrease characteristics are represented by the brake pressure increase characteristic curve and the brake decompression characteristic curve. The pressure-holding cycle periodically controls the opening and closing of the intake valve or exhaust valve of the brake chamber until the pressure in the brake chamber no longer changes, and records the pressure of the brake chamber over time each time. Changes, and then through data processing to obtain the characteristic curve of the brake pressure boost and the characteristic curve of the brake decompression. The increase and decrease pressure characteristics obtained by the calibration method of the present invention can bring convenience to the regulation of the brake pressure of the whole vehicle, thereby improving the regulation efficiency of the method for regulating the brake pressure of the whole vehicle.
Description
technical field [0001] The invention relates to the field of automobile braking, in particular to a calibration method and acquisition device based on the pressure-increasing and decompressing characteristics of an air pressure-by-wire brake system, a method for adjusting and controlling brake pressure of a whole vehicle, and a control method for a brake system of a whole vehicle. Background technique [0002] Vehicle anti-lock braking system (ABS) is one of the active safety devices of the vehicle. It adjusts the degree of wheel locking by controlling the braking torque according to the wheel speed feedback, which can make full use of the road adhesion and ensure the safety of the vehicle during emergency braking. Stability is crucial to improving vehicle stability and safety. When the existing vehicle brake pressure is regulated, it is necessary to go through complex calculations according to the adjusted pressure variation to determine the opening time of the intake valve...
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IPC IPC(8): B60T13/26B60T13/74B60T13/68B60T8/1761B60T17/22
CPCB60L7/10B60T8/1761B60T13/26B60T13/683B60T13/74B60T17/221B60T2270/60
Inventor 杨义勇魏凌涛陶兴军鲁之轩李亮
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)