模糊语言控制系统的稳定性

G. Langari, M. Tomizuka
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引用次数: 147

摘要

提出了模糊语言控制(FLC)系统稳定性分析的新方法。具体地说,证明了Lyapunov直接法可以用来确定一类模糊控制方案全局稳定的充分条件。此外,还提出了一种鲁棒性度量,可用于评价和可能的重新设计给定的模糊控制系统,以扩大其稳定运行的范围。最后,给出了所提方法的应用,并通过数值实例说明了其在控制设计方面的含义。
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Stability of fuzzy linguistic control systems
A new approach to the stability analysis of fuzzy linguistic control (FLC) systems is presented. Specifically, it is shown that the direct method of Lyapunov can be used to determine sufficient conditions for global stability of a broad class of fuzzy control schemes. Moreover, a measure of robustness is proposed that can be used to evaluate and possibly redesign a given fuzzy control system so as to enhance the range of its stable operation. Finally, the application of the proposed methodology is shown and its implications in terms of control design are demonstrated by means of numeric examples.<>
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