Event-based singularity-free fixed-time fuzzy control for active suspension systems with displacement constraint.
- Resource Type
- Article
- Authors
- Jia, Tinghan; Cao, Liang; Zhang, Pengchao; Pan, Yingnan
- Source
- Neural Computing & Applications. Sep2023, Vol. 35 Issue 27, p19751-19763. 13p.
- Subject
- *MOTOR vehicle springs & suspension
*BACKSTEPPING control method
*ADAPTIVE fuzzy control
*ADAPTIVE control systems
*STABILITY criterion
*LYAPUNOV stability
*CONTINUOUS functions
- Language
- ISSN
- 0941-0643
This paper investigates the event-based adaptive fixed-time (FT) control problem for active suspension systems (ASSs) with actuator faults. The fuzzy approximator is utilized to estimate the continuous function with the unknown car body mass parameters. The FT controller with continuous piecewise function is presented to avoid the singularity problem caused by the derivation of the virtual controller in the backstepping method and to compensate the actuator faults. A switching threshold event-triggered mechanism is evolved for ASSs, which has the advantages of fixed threshold strategy and relative threshold strategy to reduce the communication burden more reasonably. The suspension vertical displacement is restricted by constructing a time-varying barrier Lyapunov function. It is proved that the signals in the closed-loop systems are bounded by Lyapunov stability criterion. Finally, simulation results show that the controller is effective in suppressing the vertical vibration of ASSs. [ABSTRACT FROM AUTHOR]