Actuator Failure Compensation-Based Adaptive Control of Active Suspension Systems With Prescribed Performance

In this article, we study the control problem of the vehicle active suspension systems (ASSs) subject to actuator failure. An adaptive control scheme is presented to stabilize the vertical displacement of the car-body. Meanwhile, the ride comfort, road holding, and suspension space limitation can be...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2020-08, Vol.67 (8), p.7044-7053
Main Authors: Liu, Yan-Jun, Zeng, Qiang, Tong, Shaocheng, Chen, C. L. Philip, Liu, Lei
Format: Article
Language:English
Subjects:
Active control
Active suspension systems (ASSs)
Actuator failure
Actuators
Adaptation models
Adaptive control
Algorithms
Automotive bodies
Computer simulation
Continuity (mathematics)
Control algorithms
Control stability
Control theory
neural network (NN)
Neural networks
Nonlinear systems
Passenger comfort
prescribed performance function (PPF)
Suspension systems
Suspensions (mechanical systems)
Tracking errors
Transient analysis
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Summary:In this article, we study the control problem of the vehicle active suspension systems (ASSs) subject to actuator failure. An adaptive control scheme is presented to stabilize the vertical displacement of the car-body. Meanwhile, the ride comfort, road holding, and suspension space limitation can be guaranteed. In order to overcome the uncertainty, the neural network is developed to approximate the continuous function with the unknown car-body mass. Furthermore, to improve the transient regulation performance of ASSs when the actuator failure occurs, we propose a novel control scheme with the prescribed performance function to characterize the tracking error convergence rate and maximum overshoot in ASSs. Then, the stability of the proposed control algorithm can be proven based on the Lyapunov theorem. Finally, the comparative simulation results of two actuator failure types (i.e., the float fault and the loss of effectiveness fault) are given to demonstrate the effectiveness of the proposed control schemes.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2019.2937037