复杂非三角非线性系统的鲁棒自适应控制新方法

Lingrong Xue, Zhenguo Liu
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引用次数: 0

摘要

现有的自适应控制研究经常引入大量的参数估计,导致控制器结构复杂。本文研究了高阶系统和对象的鲁棒调节问题,提出了一种新的自适应控制方法。具体来说,所考虑的系统具有奇数系统功率、非三角形形式和外部干扰。通过引入参数估计的变换,将研究的系统转化为一个新的动态系统。利用模糊系统和不等式技巧,建立了非线性项的适当界。在自适应方法和齐次控制的基础上,提出了一种递归控制设计算法,构造了一种新的自适应控制器,该控制器能控制不确定边界,并保证闭环系统是半全局一致最终有界的。构造的控制器只采用一个自适应律,并且具有更简单的形式。仿真实例验证了该方法的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A New Robust Adaptive Control Method for Complex Nontriangular Nonlinear Systems
The existing research studies on adaptive control frequently introduce many parameter estimations and lead to a complicated controller. This paper investigates the robust regulation issue for high-order system and plants to raise a new approach for adaptive control. Specifically, the considered system has odd system power, nontriangular form, and external disturbance. By introducing the transformations of a parameter estimation, the studied system is transformed into a new dynamic system. By employing fuzzy systems and some inequality skills, the appropriate bounds of nonlinear terms are established. Based on the adaptive method and homogeneous control, a recursive control design algorithm is provided to construct a new adaptive controller, which dominates those uncertain bounds and guarantees that the closed-loop system is semiglobally uniformly ultimately bounded (SUUB). The constructed controller employs only one adaptive law and has a much simpler form. Simulation examples verify the validness of the presented method.
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