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Observer-based robust gain-scheduled control for semi-active air suspension systems subject to uncertainties and external disturbance
Wang, Hang1; Wong, Pak Kin1; Zhao, Jing1; Yang, Zhao Xu2,3; Yang, Zhi Xin3
2022-07-01
Source PublicationMechanical Systems and Signal Processing
ISSN0888-3270
Volume173
Abstract

In this paper, an observer-based robust gain-scheduled control scheme is designed for a semi-active air suspension (SAAS) system subject to uncertainties and external disturbance. Since the air spring in SAAS system is a highly nonlinear component and its stiffness relies on the spring interior pressure and displacement, an air spring model is constructed based on aerothermodynamics theory. Aiming at comprehensive and simplified expression of air spring nonlinear dynamics, the air spring model is expressed as linear-parameter-varying (LPV) form and further integrated into a quarter car semi-active air suspension model. To identify system states under the noisy condition with lower cost, a LPV-Kalman filter is proposed to estimate the states which are difficult to be measured or physically unmeasurable in the semi-active air suspension. With the proposed observer, a robust gain-scheduled controller is developed to overcome complex nonlinear dynamics, actuator uncertainties and external disturbance. To realize a better transient response, the control law is improved by constraining eigenvalues of the closed-loop system in desired linear matrix inequality (LMI) region. At last, simulations and experiments are conducted to illustrate the effectiveness of proposed control scheme in a quarter car test rig.

KeywordGain-scheduled Control Kalman Filter Linear Parameter Varying System Semi-active Air Suspension System
DOI10.1016/j.ymssp.2022.109045
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Mechanical
WOS IDWOS:000821103300002
Scopus ID2-s2.0-85126880338
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Document TypeJournal article
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Faculty of Science and Technology
Corresponding AuthorWong, Pak Kin
Affiliation1.Department of Electromechanical Engineering, University of Macau, Taipa, 999078, Macao
2.State Key Laboratory for Strength and Vibration of Mechanical Structures and School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an 710049, West Xianming Road, Shaanxi, China
3.State Key Laboratory of Internet of Things for Smart City, Department of Electromechanical Engineering, University of Macau, Avenida da Universidade, Taipa, 999078, Macao
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Wang, Hang,Wong, Pak Kin,Zhao, Jing,et al. Observer-based robust gain-scheduled control for semi-active air suspension systems subject to uncertainties and external disturbance[J]. Mechanical Systems and Signal Processing,2022,173.
APA Wang, Hang,Wong, Pak Kin,Zhao, Jing,Yang, Zhao Xu,&Yang, Zhi Xin.(2022).Observer-based robust gain-scheduled control for semi-active air suspension systems subject to uncertainties and external disturbance.Mechanical Systems and Signal Processing,173.
MLA Wang, Hang,et al."Observer-based robust gain-scheduled control for semi-active air suspension systems subject to uncertainties and external disturbance".Mechanical Systems and Signal Processing 173(2022).
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