某輕型車主動轉(zhuǎn)向與主動制動多變量魯棒集成控制研究
[Abstract]:More and more attention has been paid to the safety of automobiles. Active safety systems have become diversified and complex. In the current automotive chassis design, various subsystems are installed to achieve some specific functions. However, there is no argument between each subsystem of the chassis in motion relations, mechanical relations or institutional parties. There are overlaps and coupling in all surfaces. They affect each other in actual work, seriously affecting their performance and vehicle stability. Therefore, the importance of integrated control for each system of the vehicle chassis is highlighted. Integrated control can effectively remove the coupling between the subsystems and reduce the interference between the subsystems. In this paper, the active braking system and the active steering system of a light vehicle are studied and a multivariable integrated controller is designed to coordinate the work of two systems. The robust control strategy is studied in the active braking and active steering. Application of integrated control. The main work of this paper is as follows: (1) determine the structure and design flow of the active and active braking multivariable robust controller, complete the design theory of robust controller based on H infinity robust control theory and the theoretical derivation of H robust control problem using linear inequality method. (2) the vehicle model The model of automobile linear two degree of freedom, the tire model and the active steering model are established. The vehicle auxiliary calculation module is set up. The design of the active steering and active brake multivariable integrated robust controller for a light vehicle is designed according to the vehicle state equation. The ideal centroid side angle and the ideal center angle of vehicle control are obtained. The simulation test platform is built with Matlab/Smulink and Car Sim. (3) select typical working conditions: single line working condition, sinusoidal delay condition, fishhook working condition and sawtooth time delay condition. Using simulation test platform, the active steering and active control multi variable robust controller of a light vehicle is simulated under various working conditions. True verification. According to the simulation results curve of the sideslip angle and yaw rate, the effect of the controller is analyzed.
【學(xué)位授予單位】:吉林大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:U463
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