期刊
ASIAN JOURNAL OF CONTROL
卷 23, 期 2, 页码 894-907出版社
WILEY
DOI: 10.1002/asjc.2261
关键词
fractional order; fuzzy PID; hydro turbine governing system; multistability
This study derives a fractional order model of a hydro turbine governing system (FOHTGS) using the Grunwald-Letnikov's (GL) method, and investigates its dynamical properties, multistability, and coexisting attractors. A fuzzy PID based chaos control algorithm is designed and proposed in a hydro turbine governing system (HTGS), with numerical simulations conducted to validate its effectiveness.
A fractional order model of a hydro turbine governing system (FOHTGS) is derived using the Grunwald-Letnikov's (GL) method. This model is developed using its integer order. Dynamical properties of FOHTGS, such as equilibrium point and its stability, Hopf bifurcation, and Lyapunov exponents (LEs) are investigated. Different dynamics of FOHTGS with respect to changing fractional order of the system and its parameter are studied. The FOHTGS shows multistability and coexisting attractors. To support the existence of multistability, some coexisting attractors are presented. A fuzzy PID based chaos control algorithm is designed and proposed in a hydro turbine governing system (HTGS). Numerical simulations are conducted to validate the effectiveness of the derived controller.
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