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Research of Lyapunov-theory-based Adaptive Control Improving on Smith Predictor Methods in Time-delay Systems

Yangdong Zheng
International Journal of Control, Automation, and Systems, vol. 20, no. 10, pp.3177-3186, 2022

Abstract : We report on Lyapunov-theory-based model reference adaptive control schemes for improvement of Smith predictor methods applied to automatic control of time-delay systems. The theoretical analysis is carried out for first order plant models, and the Lyapunov-based adaptive control laws are derived. We also provide digital calculation methods and present numerical simulation results to verify this proposal. It is evident that the combination of Smith predictor methods and adaptive control improves the control performance of time-delay systems and prevents the system instability due to the parameter mismatches between the Smith predictor model and the real plant.

Keyword : Adaptive control, Lyapunov design approach, Smith predictor, time-delay systems.

 
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