节点文献
基于LMI方法的MIMO系统鲁棒D-稳定的频域判定
Frequency Domain Criteria for Robust D-Stability of MIMO Systems Based on LMI Method
【摘要】 研究了具有结构不确定性的多输入多输出(MIMO)系统的鲁棒D_稳定性判定问题.首先提出了系统的3种数学模型,包括凸多面体型多项式矩阵模型、多线性型多项式矩阵模型和反馈型多项式矩阵模型.然后分析了各模型在参数空间中的凸性,从而将系统的稳定性检验问题转化为线性矩阵不等式(LMI)的可行性问题,并由此给出了D_稳定性的判定方法.
【Abstract】 The problem of checking robust D-stability of multi-in and multi-out(MIMO) systems is studied.Three system models were introduced,i.e.multilinear polynomial matrix,polytopic polynomial matrix and feedback system model.Furthermore,the convex property of each model with respect to the parametric uncertainties was estabilished respectively.Based on this,sufficient conditions for D-stability were expressed in terms of linear matrix inequalities(LMIs) involving only the convex vertices.Therefore,the robust D-stability was tested by solving an LMI optimal problem.
【Key words】 polynomial matrix; robust D-stability; linear matrix inequality; parametric uncertainty;
- 【文献出处】 应用数学和力学 ,Applied Mathematics and Mechanics , 编辑部邮箱 ,2006年02期
- 【分类号】O231
- 【下载频次】131