LAPSE:2020.0503
Published Article
LAPSE:2020.0503
Robust Mixed H2/H∞ State Feedback Controller Development for Uncertain Automobile Suspensions with Input Delay
May 22, 2020
In order to achieve better dynamics performances of a class of automobile active suspensions with the model uncertainties and input delays, this paper proposes a generalized robust linear H2/H∞ state feedback control approach. First, the mathematical model of a half-automobile active suspension is established. In this model, the H∞ norm of body acceleration is determined as the performance index of the designed controller, and the hard constraints of suspension dynamic deflection, tire dynamic load and actuator saturation are selected as the generalized H2 performance output index of the designed controller to satisfy the suspension safety requirements. Second, a generalized H2/H∞ guaranteed cost state-feedback controller is developed in terms of Lyapunov stability theory. In addition, the Cone Complementarity Linearization (CCL) algorithm is employed to convert the generalized H2/H∞ output-feedback control problem into a finite convex optimization problem (COP) in a linear matrix inequality framework. Finally, a numerical simulation case of this half-automobile active suspension is presented to illustrate the effectiveness of the proposed controller in frequency-domain and time-domain.
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Keywords
active suspension, input delay, robust control
Subject
Suggested Citation
Liu N, Pang H, Yao R. Robust Mixed H2/H∞ State Feedback Controller Development for Uncertain Automobile Suspensions with Input Delay. (2020). LAPSE:2020.0503
Author Affiliations
Liu N: School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
Pang H: School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China [ORCID]
Yao R: School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
Pang H: School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China [ORCID]
Yao R: School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
Journal Name
Processes
Volume
8
Issue
3
Article Number
E359
Year
2020
Publication Date
2020-03-20
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr8030359, Publication Type: Journal Article
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Published Article
LAPSE:2020.0503
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External Link
doi:10.3390/pr8030359
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Version History
[v1] (Original Submission)
May 22, 2020
Verified by curator on
May 22, 2020
This Version Number
v1
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https://psecommunity.org/LAPSE:2020.0503
Original Submitter
Calvin Tsay
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