改进的H_∞-最佳灵敏度的连续性

The Continuity of the Modified Hoo-Optimal Sensitivity

为克服灵敏度及其加权型极小问题的局限性,本文采用改进形式,即所谓改进的灵敏度极小问题。它允许原系统对象是严格真有理,同时反馈补偿器是真有理传递函数。证明其极小值的存在性和具备连续性。结果表明所采用的性能指标具有适定性。

In this paper we consider the properties of the modified H∞ optimal sensitivity, which applies to a strictly proper plant and a proper feedback compensator. Under some conditions it is show that the infimum in the modified H∞ optimal sensitivity can be attained and the continuous dependence of the infimum is ensured.