Nonlinear Ride Height Control of Active Air Suspension System with Output Constraints and Time-Varying Disturbances

Sensors

Wei Xie¹  Carlos Silvestre¹  PakKin Wong²  Jin Zhao³  Rongchen Zhao⁴ 

[1] Department of Electrical and Computer Engineering, University of Macau, Macau 999078, China;Department of Electromechanical Engineering, University of Macau, Macau 999078, China;Key Laboratory of Advanced Manufacturing Technology of the Ministry of Education, Guizhou University, Guizhou 550025, China;School of Mechanical and Electrical Engineering, Guizhou Normal University, Guizhou 550001, China;

关键词: nonlinear height control;    active air suspension;    output constraints;    random road excitation;    disturbance observer design;   

DOI  :  10.3390/s21041539

来源: DOAJ

【 摘 要 】

This paper addresses the problem of nonlinear height tracking control of an automobile active air suspension with the output state constraints and time-varying disturbances. The proposed control strategy guarantees that the ride height stays within a predefined range, and converges closely to an arbitrarily small neighborhood of the desired height, ensuring uniform ultimate boundedness. The designed nonlinear observer is able to compensate for the time-varying disturbances caused by external random road excitation and perturbations, achieving robust performance. Simulation results obtained from the co-simulation (AMESim-Matlab/Simulink) are given and analyzed, demonstrating the efficiency of the proposed control methodology.

【 授权许可】

Unknown