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Event-Triggered Nonlinear \(H_{\infty }\) Control Design via an Improved Critic Learning Strategy

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Adaptive Critic Control with Robust Stabilization for Uncertain Nonlinear Systems

Part of the book series: Studies in Systems, Decision and Control ((SSDC,volume 167))

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Abstract

In this chapter, we aim at improving the critic learning criterion to cope with the event-based nonlinear \(H_{\infty }\) state feedback control design. First of all, the \(H_{\infty }\) control problem is regarded as a two-player zero-sum game and the adaptive critic mechanism is used to achieve the minimax optimization under event-based environment. Then, based on an improved updating rule, the event-based optimal control law and the time-based worst-case disturbance law are obtained approximately by training a single critic neural network. The initial stabilizing control is no longer required during the implementation process of the new algorithm. Next, the closed-loop system is formulated as an impulsive model and its stability issue is handled by incorporating the improved learning criterion. The infamous Zeno behavior of the present event-based design is also avoided through theoretical analysis on the lower bound of the minimal inter-sample time. Finally, the applications to an aircraft dynamics and a robot arm plant are carried out to verify the efficient performance of the present novel design method.

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Correspondence to Ding Wang .

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Wang, D., Mu, C. (2019). Event-Triggered Nonlinear \(H_{\infty }\) Control Design via an Improved Critic Learning Strategy. In: Adaptive Critic Control with Robust Stabilization for Uncertain Nonlinear Systems. Studies in Systems, Decision and Control, vol 167. Springer, Singapore. https://doi.org/10.1007/978-981-13-1253-3_8

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