State feedback predictive control for nonlinear hydro-turbine governing system

Yi, Yapeng, Zhang, Zhiwang, Chen, Diyi, Zhou, Rui, Patelli, Edoardo ORCID: 0000-0002-5007-7247 and Tolo, Silvia ORCID: 0000-0003-3547-7012 (2018) State feedback predictive control for nonlinear hydro-turbine governing system. JOURNAL OF VIBRATION AND CONTROL, 24 (21). pp. 4945-4959.

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Abstract

The present work introduces a novel predictive control strategy for the analysis of the dynamic performance of hydro-turbine governing systems based on fuzzy logic. Firstly, a six-dimensional nonlinear dynamic model of the system is defined. The defined model is applied to a realistic case-study, aiming to investigate the dynamic behavior of the system. In order to deal effectively with the nonlinearity of the system under study, the Takagi–Sugeno fuzzy approach is adopted. The results demonstrated through the use of the discrete Lyapunov function and Schur complements of matrices suggest that the closed-cycle control system can achieve a global asymptotic stability state. The second part focuses on the quantification of the impact of sudden changes in operating conditions on the overall performance. The numerical results indicate that the proposed predictive control method can ensure the performance of the system to be reliable and robust to external inferences. In addition to this, the approach proposed has unquestionable advantages over the traditional proportional–integral–derivative and model predictive controllers with regard to nonlinear systems applications.

Item Type:	Article
Uncontrolled Keywords:	State feedback predictive control, Takagi-Sugeno, fuzzy model, hydro-turbine governing system, nonlinear, stability
Depositing User:	Symplectic Admin
Date Deposited:	12 Jul 2018 06:31
Last Modified:	19 Jan 2023 01:30
DOI:	10.1177/1077546317740013
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3023627