Journal
JOURNAL OF VIBRATION AND CONTROL
Volume 27, Issue 19-20, Pages 2303-2318Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1077546320959521
Keywords
Active suspension system; extended state observer; backstepping fast terminal sliding mode control; virtual prototype; ADAMS
Categories
Funding
- National Natural Science Foundation of China [61773212]
- Natural Science Foundation of Jiangsu Province [BK20170094]
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In this study, an extended state observer-based backstepping fast terminal sliding mode control method is proposed to improve the ride comfort of a full-car active suspension system. By estimating the disturbances of external road excitation and uncertain dynamics, better control performance is achieved.
In this study, an extended state observer-based backstepping fast terminal sliding mode control is developed for the ride comfort of a full-car active suspension system. In the referred extended state observer-based backstepping fast terminal sliding mode control, the extended state observer is designed to estimate the lumped disturbances of external road excitation and uncertain dynamics. Then, a backstepping fast terminal sliding mode controller is used to track the desired trajectory reference which is obtained via a nonlinear filter. A virtual prototype of vehicle suspension is also built on ADAMS software as the simulated real-time controlled system. The co-simulation results of MATLAB/Simulink+ADAMS show that the proposed controller has better performance than the passive suspension and the active suspension using the traditional backstepping method whether under random road or bumpy road.
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