Adaptive Fault Tolerant Control of a Half-Car Active Suspension Systems Subject to Random Actuator Failures

Liu, Bing; Saif, Mehrdad; Fan, Huijin

doi:10.1109/tmech.2016.2587159

Cited by 57 publications

(35 citation statements)

References 29 publications

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“…To improve the adaptive capacity of unknown fault systems in FTCS, some intelligent AFTCS have been proposed in . Fault information can be obtained through FDD technology, and then selecting the appropriate controller parameters online reconstruction control law . The study of presents a robust adaptive fault‐tolerant compensation control scheme to solve disturbance, actuator faults, and parameter uncertainty for linear systems.…”

Section: Introductionmentioning

confidence: 99%

Observer‐Based Adaptive Output Feedback Fault Tolerant Control for Nonlinear Hydro‐Turbine Governing System with State Delay

Chen

et al. 2018

Asian Journal of Control

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This paper focuses on the problem of adaptive output feedback fault tolerant control for a nonlinear hydro-turbine governing system. A dynamic mathematical model of the system is established, which aims to investigate the dynamic performance of the model under servomotor delay and actuator faults. Then, a fault estimation adaptive observer is proposed to achieve online real-time diagnosis of system faults. Based on the online fault estimation information, an observer-based adaptive output feedback fault tolerant controller is designed. Furthermore, under reasonable assumptions, the results demonstrate that the closed-loop control system can achieve global asymptotic stability by Lyapunov function. Finally, the numerical simulation results are presented to indicate the satisfaction control effectiveness of the proposed scheme.

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Section: Introductionmentioning

confidence: 99%

Observer‐Based Adaptive Output Feedback Fault Tolerant Control for Nonlinear Hydro‐Turbine Governing System with State Delay

Chen

et al. 2018

Asian Journal of Control

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“…Similar to the other practical systems, unknown faults in actuators and sensors or failure of component continually happen, which result in performance degradation and even instability of the active suspension systems. [19][20][21] To strengthen reliability, ensure stability, and achieve requirement performance of the closed-loop active suspension systems, effective fault-tolerant control (FTC) technologies are crucial. Motivated by this reason, significant research efforts for FTC technologies of active suspension systems have been devoted.…”

Section: Introductionmentioning

confidence: 99%

“…Motivated by this reason, significant research efforts for FTC technologies of active suspension systems have been devoted. [19][20][21][22][23][24][25] Among these methods, the composite FTC approaches based on fault estimation (FE) have been recognized as one of considerable approaches.…”

Section: Introductionmentioning

confidence: 99%

Fault‐tolerant sliding mode control for uncertain active suspension systems against simultaneous actuator and sensor faults via a novel sliding mode observer

Zhang

Geng

2018

Optim Control Appl Methods

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In this paper, the problem of fault estimation and fault-tolerant control for half-car active suspension system with simultaneous varying sprung and unsprung mass, actuator fault, and sensor fault is investigated. First, Takagi-Sugeno fuzzy approach is used to describe the uncertain half-car active suspension system with simultaneous actuator fault and sensor fault. Then, a novel augmented descriptor sliding mode observer is designed to estimate the state of system, actuator fault, and sensor fault with good precision. Based on the state and fault estimation, a fault-tolerant sliding mode control scheme is designed to stabilize the resulting fault half-car active suspension system. By utilizing Lyapunov stability theory, the existence condition for the proposed sliding mode observer and fault-tolerant sliding mode controller is provided in terms of linear matrix inequalities (LMIs). In addition, it is shown that the reachability of the developed sliding surface can be ensured under the design control law.Finally, simulation results for uncertain half-car active suspension systems are presented to demonstrate the effectiveness of the proposed design techniques. KEYWORDSfault estimation, fault-tolerant control, sliding mode control, T-S fuzzy system, uncertain half-car active suspension system *Nomenclature: , pitch angle; b 1 , distance between the front axle and the center of mass; b 2 , distance between the rear axle and the center of mass; cf and c r , stiffness of the passive elements of front wheel and rear wheel, respectively; I 2 , mass moment of inertia for the pitch motions; K 2f and K 2r , front and rear suspension spring stiffness, respectively; M 2 , car body mass; m 1f and m 1r , front and rear unsprung masses, respectively; u f (t) and u r (t), front actuator and rear actuator force inputs, respectively; Z 2 , car body displacement; Z 0f and Z 0r , road inputs related to the front and rear wheel, respectively; Z 1f and Z 1r , mass displacement of front and the rear unsprung, respectively; Z 2f and Z 2r , mass displacement of front and rear body, respectively.

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“…Other performances such as suspension deflection and actuator saturation are also considered. In [26], an adaptive fault tolerant control problem for half-car active suspension system subject to Markovian jumping actuator failures is considered. By employing adaptive backstepping technique, a new adaptive fault tolerant control scheme is proposed, which ensures the boundedness in probability of the considered systems.…”

Section: Introductionmentioning

confidence: 99%

Passive fault-tolerant control for vehicle active suspension system based on H2/H∞ approach

Zhang¹,

Gong²

2018

J. vibroeng.

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Abstract. In this paper, a robust passive fault-tolerant control (RPFTC) strategy based on / approach and an integral sliding mode passive fault tolerant control (ISMPFTC) strategy based on / approach for vehicle active suspension are presented with considering model uncertainties, loss of actuator effectiveness and time-domain hard constraints of the suspension system. performance index less than and performance index is minimized as the design objective, avoid choosing weighting coefficient. The half-car model is taken as an example, the robust passive fault-tolerant controller and the integral sliding mode passive fault tolerant control law is designed respectively. Three different fault modes are selected. And then compare and analyze the control effect of vertical acceleration of the vehicle body and pitch angular acceleration of passive suspension control, robust passive fault tolerant control and integral sliding mode passive fault tolerant control to verify the feasibility and effectiveness of passive fault tolerant control algorithm of active suspension. The studies we have performed indicated that the passive fault tolerant control strategy of the active suspension can improve the ride comfort of the suspension system.

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Adaptive Fault Tolerant Control of a Half-Car Active Suspension Systems Subject to Random Actuator Failures

Cited by 57 publications

References 29 publications

Observer‐Based Adaptive Output Feedback Fault Tolerant Control for Nonlinear Hydro‐Turbine Governing System with State Delay

Observer‐Based Adaptive Output Feedback Fault Tolerant Control for Nonlinear Hydro‐Turbine Governing System with State Delay

Fault‐tolerant sliding mode control for uncertain active suspension systems against simultaneous actuator and sensor faults via a novel sliding mode observer

Passive fault-tolerant control for vehicle active suspension system based on H2/H∞ approach

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