A method and device for obtaining vehicle air pressure brake parameters
A technology of pneumatic braking and parameters, applied in the direction of brake transmission, brake, brake safety system, etc., can solve the problems of high cost, time-consuming, long design cycle, etc., and achieve the effect of improving efficiency
Active Publication Date: 2019-09-17
TSINGHUA UNIV
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Problems solved by technology
[0004] However, with the rapid replacement of products in the market, shorter and shorter R&D and testing cycles are required to meet the needs of product replacement. The current complicated and time-consuming air pressure brake parameter design method has a long design cycle and high cost. , The efficiency of obtaining parameters is low, and it cannot meet the short-cycle product development needs
Furthermore, because the R&D personnel combined the accumulated experience in the early stage and the parameters of previous models to carry out the research and development of air brakes, the design process lacked rigorous logic
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[0076] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without...
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The invention discloses a method and device for obtaining vehicle pneumatic braking parameters. The method and the device can improve the efficiency of obtaining the vehicle pneumatic braking parameters. The method comprises the steps of acquiring parameters of a target vehicle, and calculating a synchronous adhesion coefficient and adhesion utilization based on the parameters of the target vehicle and a braking force distribution coefficient of a brake, wherein the braking force distribution coefficient of the brake is a variable; acquiring an optimal range of the braking force distribution coefficient which satisfies the relations among target braking intensity, adhesion coefficient, and the adhesion utilization in an ECE regulation through the variable; selecting an optimum value from the optimal range of the braking force distribution coefficient, and calculating the max brake moment of the brake according to the optimum value; calculating a specific energy dissipation rate and a specific frictional force according to the max brake moment of the brake and the parameters of the target vehicle; conducting calculation according to each parameter which satisfies a verification regulation if the specific energy dissipation rate and the specific frictional force satisfy the verification regulation to obtain the pneumatic braking parameters.
Description
technical field [0001] The present application relates to the technical field of brake testing, in particular, to a method and device for obtaining vehicle air pressure brake parameters. Background technique [0002] Due to the large mass of commercial vehicles, the braking torque required for braking is large, and different braking conditions have different requirements for braking performance. Excellent braking performance is the primary condition for guaranteeing commercial vehicles. Therefore, how to improve the braking performance to ensure the stability and safety of the vehicle under various braking conditions is a research hotspot in braking technology. [0003] At present, when designing air brakes, R&D personnel generally conduct preliminary design manually to calculate relevant braking parameters based on the design task book, combined with previous experience and previous model parameters, for example, design formulas based on experience and design tasks Accordi...
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IPC IPC(8): B60T13/24B60T17/22
Inventor 李亮程硕刘镔豪
Owner TSINGHUA UNIV