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arXiv math/0007168math.OC
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一类时变结构非线性系统的控制

Control for a class of nonlinear systems with a time-varying structure

R. Ordonez, K. M. Passino

摘要:

针对一类具有时变结构的不确定非线性系统,提出了一种直接自适应控制方法。我们认为,非线性系统组成的有限数量的"件“,这是由依赖于一个可能的外源调度变量的函数插值。我们假设,每一块是在严格的反馈形式,并表明,该方法产生的稳定性的闭环中的所有信号,以及收敛的状态向量的剩余集周围的平衡,其大小可以设置由几个设计参数的选择。这里考虑的一类系统是一类严格反馈系统的推广传统上认为在反推文献。我们还提供了设计准则的基础上的瞬态L-无穷大的界限。

英文摘要:

In this paper we present a direct adaptive control method for a class of uncertain nonlinear systems with a time-varying structure. We view the nonlinear systems as composed of a finite number of ``pieces,'' which are interpolated by functions that depend on a possibly exogenous scheduling variable. We assume that each piece is in strict feedback form, and show that the method yields stability of all signals in the closed-loop, as well as convergence of the state vector to a residual set around the equilibrium, whose size can be set by the choice of several design parameters. The class of systems considered here is a generalization of the class of strict feedback systems traditionally considered in the backstepping literature. We also provide design guidelines based on L-infinity bounds on the transient.

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