Event-triggered mechanism with settling time for actuator failures

doi:10.3969/j.issn.1674-1951.2021.10.009

Abstract

Abstract:

Unknown forms of actuator failures during the operation of industrial systems might lead to the instability or even crash of the control systems. For a class of uncertain nonlinear systems with actuator failures,an event-triggered adaptive compensation control with prescribed settling time consensus is proposed.A finite time neural network adaptive controller which introduces a nonlinear transformation function is designed,so as to ensure the tracking error converges to the predefined interval within a prescribed settling time. Meanwhile,based on the backstepping technology,an event-triggered compensation control strategy with prescribed settling time consensus is proposed. Under this strategy,the system can achieve rapid compensation for the event of failure and preset the finite convergence time. Finally,the simulation experiments validate that the proposed strategy is able to effectively save network bandwidth and ensure the global uniform bounded convergence of the system.

Key words: control system, actuator failure, neutral network system, prescribed settling time, event-triggered control

CLC Number:

TP273

HUANG Kunfeng, HONG Jiachun, WU Yushen, ZHU Houyao. Event-triggered mechanism with settling time for actuator failures[J]. Huadian Technology, 2021, 43(10): 73-79.

Figures/Tables 6

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Tab.1

Number of trigger

T/s	0—2	2—4	4 $—$ 6	6 $—$ 8	8 $—$ 10	10 $—$ 12	12 $—$ 14
触发次数	64	58	51	42	42	28	34

Tab.1

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