Event-based fast terminal sliding mode control design for a class of uncertain nonlinear systems with input delay: A quantized feedback control

Abstract

This paper deals with the problem of regulation and tracking tasks for nonlinear dynamic systems that use a network medium to transmit state measurements. A novel quantized event-triggered fast terminal sliding mode controller (SMC) is proposed to reduce communication resources and computation loads while increase robustness against packet dropout, uncertainties, and disturbances. Then, new criteria are defined for the dynamic quantizer based on the event-triggering error, which increases the accuracy and facilitates the implementation procedures. In practice, delay-free systems are not realistic considerations, thus, their stability is analyzed in the presence of a dynamic quantizer and input delay under the proposed controller scheme. Then, the minimum inter-sampling time is derived, which guarantees the Zeno-free behavior and provides information about the cyber layer bandwidth in cyber-physical systems. Finally, three simulations on an unstable numerical model, the model of an inertia wheel inverted pendulum, and the mass-spring-damper model validate the effectiveness of the proposed methodology.

Sliding Mode Control for Parallel DC–DC Converter Network Systems With Uniform Quantization and Discretization Effects

“…In recent years, there has been more and more research about the quantization of DC-DC converters' NCS: in the literature [21], a novel quantized event-triggered fast terminal SM controller is proposed for reducing communication resources and computation loads while increasing robustness against packet dropout, uncertainties, and disturbances. However, the method designed in the literature has high requirements for the controller design and the trigger strategy, and the discretization effect of the system is not considered for applications of digital chip control.…”

Event-triggered model-free adaptive control for unknown multiple input and multiple output nonlinear system under denial of service attacks

“…Meanwhile, another critical issue in NCSs is how to save bandwidth resources effectively. The event-triggered control (ETC) has attracted much attention because it can reduce the waste of bandwidth resources (Gu et al (2022b); Saeedi et al (2022)). In Gao et al (2020), the fault-tolerant control of saturated state systems based on ETC is studied.…”