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This paper discusses the problem of memory-based adaptive event-triggered integral sliding mode control (ISMC) for the load frequency control (LFC) of the multi-area power system. To alleviate the chattering phenomenon, a disturbance observer (DO) incorporated with the even-triggered strategy and two sliding surfaces are designed. The corresponding control law also synthesized with an adaptive term in which the requirement of the upper bounds of the perturbations is eliminated. Moreover, to improve the transient performance of the system, a memory-based term is included in the proposed control law. Based on the Krasovskii Lyapunov function and utilizing a decaying threshold, the ultimate boundedness stability (UBS) of the closed-loop system is studied and appropriate conditions are extracted in LMIs. The bounded area is also derived and it is verified that along the system implementation, Zeno is not occurred. The simulation results are provided for single, three and four areas and the superiorities of the suggested control scheme are compared with some existing methods.
Ansari et al. (Tue,) studied this question.