In this paper, by adjusting two sliding mode parameters of the controller, namely switching surface and sliding mode magnification, a design scheme of optimal sliding mode controller for AUV is proposed, and the control performance is optimized according to these parameters. The optimal sliding mode technology used in this degree is natural model method, that is, particle swarm optimization method, genetic method and viscoelastic simulation method. These three methods are used to find the optimal sliding mode parameters of AUV, and two performance index criteria are adopted: the derivative of absolute error and the derivative of integral.
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