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Design of self tuning fuzzy controllers for nonlinear systems

机译:非线性系统自调整模糊控制器的设计

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Nonlinearities present in the systems make their controller design a non-trivial task. The difficulty further increases in case of multi-input-multi-output (MIMO) systems with increased number of variables and interactions between them. In this paper, fuzzy based intelligent control schemes are designed for control of nonlinear single-input-single-output (S1S0) and M1M0 systems. The comparative study of the designed self tuning fuzzy controller with a standard Takagi-Sugeno (TS) fuzzy controller is discussed with application to a shell and tube heat exchanger (nonlinear SISO system) and a coupled two tank system (nonlinear M1M0 system). Online tuning of the membership functions and control rules of fuzzy controller is carried out using simulated annealing (SA) to obtain improved performance by minimizing the error function. Experimental results demonstrate the effectiveness of the control scheme.
机译:系统中存在的非线性使控制器设计成为一项艰巨的任务。在多输入多输出(MIMO)系统中变量数量增加以及变量之间的交互作用增加的情况下,难度进一步增加。本文设计了基于模糊的智能控制方案,用于控制非线性单输入单输出(S1S0)和M1M0系统。讨论了设计的自调整模糊控制器与标准Takagi-Sugeno(TS)模糊控制器的比较研究,并将其应用于壳管式热交换器(非线性SISO系统)和耦合两罐系统(非线性M1M0系统)。使用模拟退火(SA)对模糊控制器的隶属函数和控制规则进行在线调整,以通过最小化误差函数来提高性能。实验结果证明了该控制方案的有效性。

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