A Design Method of the New Simple Adaptive Control System and Its Robustness

A Design Method of the New Simple Adaptive Control System and Its Robustness
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新型简易自适应控制系统的设计方法及其鲁棒性

DOI:
10.9746/sicetr1965.36.424
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发表时间:
2000
期刊:
Journal of the Society of Instrument and Control Engineers
影响因子:
--
通讯作者:
Y. Miyasato
Y. Miyasato
中科院分区:
--
文献类型:
--
作者:
Y. Miyasato

文献摘要

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本文提出了一种新的简单自适应控制系统的设计方法。在该自适应方案中,整个控制系统的结构不会随着受控过程的相对程度的增大而变得如此复杂,并且误差系统的稳定性条件被显式地简化为两个设计参数的适当选择(一个参数应该足够大,另一个应该足够小)。在理想的情况下,不存在非结构化的不确定性,它表明,整个系统是全局有界的,输出误差的大小可以任意小,通过调整这两个设计参数之一。由于该方法包含了投影型自适应律,因此对于小的非结构不确定性,保证了整个系统的半连续有界性。
A design method of the new simple adaptive control systems is presented in this paper. In that adaptive scheme, the structure of overall control systems does not become so complex as relative degrees of controlled processes grow larger, and the stability conditions of error systems are explicitly reduced to the proper choices of two design parameters (one parameter should be sufficiently large, and the other should be sufficiently small). In the ideal case where no unstructured uncertainty exists, it is shown that overall systems are globally bounded and that the magnitude of output errors can be made arbitrary small by adjusting one of those two design parameters. Since adaptive laws of projection type are included in that method, semiglobal boundedness of overall systems is assured for small unstructured uncertainties.