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On the strictly positive realness of Schur interval functions

机译:关于Schur区间函数的严格正实性

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摘要

Necessary and sufficient conditions for strictly positive realness of discrete-time interval functions, which may be associated in parameter space by a multidimensional boxed domain, are provided. Positive realness of interval functions are studied, and both necessary and sufficient conditions are provided for such functions to be strictly positive real (SPR) in the presence of interval variations of the function's parameters corresponding to a Kharitonov-type box domain. The number of checking functions that have to be tested for SPR property in order to establish the interval SPR property grows with the order of the interval function. These tests give both necessary and sufficient conditions for SPR. The approach presented for interval functions does not require the checking of all the vertices for unit circle positive realness.
机译:为离散时间间隔函数的严格正实性提供了必要和充分的条件,这些条件可能在参数空间中由多维盒装域关联。研究了区间函数的正实性,并在与哈里通诺夫型盒域相对应的函数参数存在区间变化的情况下,为此类函数严格地为正实数(SPR)提供了充要条件。为了确定间隔SPR属性而必须测试的SPR属性检查功能的数量随间隔功能的顺序增加。这些测试提供了SPR的必要条件和充分条件。针对区间函数提出的方法不需要检查所有顶点的单位圆正真实性。

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