Title :
Optimal ℋ∞ control for electromagnetic suspension systems with finite frequency specifications
Author :
Yang Xiaozhan ; Zheng Zhong ; Zeng Yi ; Wu Ligang
Author_Institution :
Dept. of Control Sci. & Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
In this paper, the problem of ℋ∞ control for electromagnetic suspension (EMS) systems is addressed, and cases of both finite and entire frequency are discussed. Firstly a linear state-space model is applied to approximated the complex EMS system, and then ℋ∞ performance index is adopted to measure ride comfort in circumstance of more general exogenous disturbances. By using the generalized Kalman-Yakubovich-Popov (KYP) lemma, the entire frequency ℋ∞ norm is extended to finite frequency case. Consequently, for concerned frequency range, the ℋ∞ performance of EMS system can be further improved. Finally, numerical simulation on an EMS system is performed to validate the effectiveness of the proposed approach.
Keywords :
H∞ control; Kalman filters; electromagnetic devices; optimal control; performance index; state-space methods; suspensions (mechanical components); H∞ norm; H∞ performance index; KYP lemma; complex EMS system; electromagnetic suspension systems; finite frequency specifications; generalized Kalman-Yakubovich-Popov lemma; linear state-space model; numerical simulation; optimal H∞ control; Closed loop systems; Energy management; Environmental management; Frequency control; Linear matrix inequalities; Suspensions; Symmetric matrices; ℋ∞ performance; Generalized KYP lemma; electromagnetic suspension systems; finite frequency control;
Conference_Titel :
Control Conference (CCC), 2014 33rd Chinese
Conference_Location :
Nanjing
DOI :
10.1109/ChiCC.2014.6895673
