汽車ABS控制策略仿真研究與動態(tài)性能試驗臺開發(fā)
[Abstract]:With the development of social economy and science and technology, the requirement of vehicle safety performance is higher and higher. Anti-lock braking system (Anti-lock Braking System,ABS), as the representative device of automobile active safety system, plays an important role in improving vehicle braking performance and improving vehicle driving safety. Therefore, ABS has been rapidly developed and widely used in automobile field. The method of road test is generally used to test and evaluate the working performance of ABS. However, the actual road test sometimes needs the vehicle to run at high speed. If the driver is not operated properly, it is easy to happen danger. For the teaching and training of automobile ABS, the road test method is not intuitive. In view of the above problems, this paper develops a ABS dynamic performance test rig which can meet the needs of automobile ABS detection, development, teaching and training. In this paper, the theoretical foundation, basic structure and working principle of automobile ABS are analyzed deeply, and the control strategy of automobile ABS is studied and analyzed emphatically. After previous investigation and theoretical analysis, based on the mathematical model of automobile ABS, the simulation model of automobile ABS is established based on MATLAB/Simulink, including 1 / 4 vehicle model, tire model, brake model and controller model, etc. The simulation results and the simulation curves are obtained. Based on the actual requirements, the overall structure of the vehicle ABS dynamic performance test bench is constructed. The hardware design includes power transmission system, electrical control system, fault diagnosis panel and so on. This paper introduces and analyzes the selection of the main components in the hardware part of the test-bed, including the motor, the data acquisition card and so on. With the virtual instrument software LabVIEW as the development tool, the host computer software of automobile ABS dynamic performance test bench is designed. The software system includes data acquisition and analysis system, braking distance measuring system and fault setting system. The main problems are as follows: (1) the braking simulation of ABS can be realized. Through the relative motion state of wheel and friction hub during braking, the working process of ABS can be observed intuitively; (2) it can dynamically collect the wheel speed and speed, vehicle speed and speed, the change of slip ratio and braking distance in the braking process; (3) the relay on the board of wireless control fault can be sucked in, which can realize the fault of open circuit, short circuit and virtual connection in analog circuit. At the end of this paper, the test results and the test curves are obtained based on the vehicle ABS dynamic performance test rig, which is basically consistent with the simulation results obtained from the simulation tests. The feasibility of the vehicle ABS dynamic performance test rig is verified.
【學(xué)位授予單位】:天津職業(yè)技術(shù)師范大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:U467.52
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