Chatter free sliding mode control of a chaotic coal mine power grid with small energy inputs
Yanqing Xu, Feng Jia, Caoyuan Ma and 2 more
International Journal of Mining Science and Technology · 2012
doi:10.1016/j.ijmst.2012.01.006 (opens in a new tab)
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Abstract
An augmented proportional-integral sliding surface was designed for a sliding mode controller. A chatter free sliding mode control strategy for a chaotic coal mine power grid was developed. The stability of the control strategy was proven by Lyapunov stability theorem. The proposed sliding mode control strategy eliminated the chattering phenomenon by replacing the sign function with a saturation function, and by replacing the constant coefficients in the reaching law with adaptive ones. An immune genetic algorithm was used to optimize the parameters in the improved reaching law. The cut-in time of the controllers was optimized to reduce the peak energy of their output. Simulations showed that the proposed sliding mode controller has good, chatter free performance. Keywords: Coal mine power grid, Chaos, Sliding mode control, Chattering phenomena, Energy, Immune genetic algorithm
Abstract licence: CC BY-NC-ND
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