基于容限控制策略的结构振动鲁棒控制器设计

本文研究了一种直接满足控制性能要求的结构振动鲁棒控制的常增益反馈优化设计方法,提出了基于容限性能指标的控制设计准则,依据特征结构配置思想构造了反馈控制增益的优化设计程式,并辅以算例给出具体计算中的一些考虑。

ROBUST CONTROLLER DESIGN FOR STRUCTURAL VIBRATION BASED ON TOLERANCE CONTROL STRATEGY

The present paper develops a robust design method of structural vibration control based on the tolerant measure of performance. Firstly, a kind of quantitative index of controlled responses called "tolerance control index" is presented which is in contrast to the standard asymptotic idea and owing to the high needs for the quickness and accur-acy, A class of structural control system with some bounded uncertainties subject to bounded uncertain loads is considered. Tolerance controlling specifications including the direct and clear response index and representation of robustness range are formulated in terms of neighborhoods in normed function spaces. Secondly, a set of robust design criteria of structural vibration control for the direct satisfaction of performance specifications, based primarily on fixed point and operator norm techniques, is established thro-ugh the state feedback control, which offers a quantitative design for high-precise structural vibration control problems. Thirdly, according to the eigenstructure assignment idea, an integrated optimum synthesis procedure for the robust controller is given so that the parameters of feedback controller are optimally obtained. Finally, Some considerations on the. applicability of such derived design procedure are demonstrated through a calculation example.