Event-triggered type-2 fuzzy-based sliding mode control for steer-by-wire systems

• Published in: Mechatronics (Oxford) Vol. 82; p. 102704
• Main Authors: Ma, Bingxin, Wang, Yongfu, Chen, Gang
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2022
• Subjects: Event-triggered control; Interval type-2 fuzzy logic system (IT2 FLS); Practical finite-time stability; State observer; Steer-by-wire (SbW) system; Vehicle experiment; Vehicle experiment; Steer-by-wire (SbW) system; State observer; Event-triggered control; Practical finite-time stability; Interval type-2 fuzzy logic system (IT2 FLS)
• ISSN: 0957-4158; 1873-4006
• DOI: 10.1016/j.mechatronics.2021.102704

This paper proposes an event-triggered higher-order sliding mode control for steer-by-wire (SbW) systems subject to limited communication resources and uncertain nonlinearity. First, an interval type-2 fuzzy logic system (IT2 FLS) is adopted to approximate the uncertain nonlinearities. A fuzzy-based state observer is developed to estimate unavailable states of the extended SbW system. Then, to save communication resources and eliminate chattering, an event-triggered higher-order sliding mode control is proposed for the SbW system. The key advantage is that the proposed control scheme can offset the observation error and the event-triggering error. After that, the practical finite-time stability of the closed-loop SbW system is proved in the framework of the Lyapunov theory. Finally, numerical simulations and vehicle experiments are given to evaluate the effectiveness and superiority of the proposed scheme.