Open AccessRobust fault‐tolerant H ∞ output feedback control of active suspension and dynamic vibration absorber with finite‐frequency constraint
Author(s) -
Zhang Yuanzhi,
Liu Mingchun,
Zhang Caizhi
Publication year - 2020
Publication title -
iet intelligent transport systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.579
H-Index - 45
eISSN - 1751-9578
pISSN - 1751-956X
DOI - 10.1049/iet-its.2020.0364
Subject(s) - control theory (sociology) , sprung mass , active suspension , damper , actuator , engineering , fault (geology) , vibration control , suspension (topology) , vibration , particle swarm optimization , constraint (computer aided design) , fault tolerance , control engineering , computer science , control (management) , mathematics , algorithm , physics , artificial intelligence , quantum mechanics , homotopy , mechanical engineering , seismology , pure mathematics , electrical engineering , geology , reliability engineering
Currently, majorities of the robust H ∞ control methods are designed for active suspensions, and seldom take the active control of the in‐wheel‐motor (IWM) into consideration for IWM driven electric vehicles (EVs). In this study, a robust fault‐tolerant H ∞ output feedback control strategy with finite‐frequency constraint is proposed to synchronously control the active suspension and dynamic vibration absorber (DVA) for IWM driven EVs. Firstly, a DVA‐based electric wheel model is developed, in which the IWM is designed as DVA. Furthermore, the spring‐damper parameters of the DVA are matched by using particle swarm optimisation (PSO). Then, the robust fault‐tolerant H ∞ output feedback control strategy is developed based on linear matrix inequality, in which the finite‐frequency constraint is designed in the resonance frequency range of sprung mass. Finally, simulation results validate that the PSO can effectively optimise the spring‐damper parameters of the DVA. The robust fault‐tolerant H ∞ output feedback control with finite‐frequency constraint can effectively improve the ride comfort and suppress the vertical vibration caused by IWM compared with entire frequency constraint. Meanwhile, the fault‐tolerant effectiveness of the proposed method is demonstrated under the actuator faults concerning the actuator force noises and losses.