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线性不确定时滞系统的时滞相关H~∞控制
DelayDependent H~∞ Control for Linear Uncertain Systems with TimeDelay
【摘要】 基于动态耗散理论和微分对策理论,研究了确定性和不确定性线性时滞系统的时滞相关H∞状态反馈控制器的设计问题·将鲁棒控制器设计问题转化为非合作对策中目标函数求解鞍点问题,并针对确定性和不确定性线性时滞系统分别得到了控制器存在的充分条件·对于不确定线性时滞系统可以通过求解线性矩阵不等式进行时滞相关H∞鲁棒控制器设计,使系统内稳且具有H∞干扰衰减系数λ·而对于确定性线性时滞系统仅需要验证一个线性矩阵不等式,使设计问题得以简化·
【Abstract】 ?The design of H∞ state feedback controllers depending on the timedelays were considered for certain and uncertain linear systems with timedelay,based on dissipative dynamical system theory and differential game theory. The design of robust controllers was changed to the calculation of saddle point for a object function in noncooperative game. Two sufficient conditions were obtained respectively for certain and uncertain linear systems with timedelay respectively. The delaydependent H∞ robust controllers were designed for uncertain linear systems with timedelay by solving linear matrix inequalities. The controlled systems are internal stable and have the decrease coefficient λ of H∞ disturbance. For certain linear systems with timedelay, the design could be simplified by only checking a linear matrix inequalities.
【Key words】 ?linear uncertainsystem; H∞ control; timedelay; dissipation inequality; differential game; LMI;
- 【文献出处】 东北大学学报 ,JOURNAL OF NORTHEASTERN UNIVERSITY , 编辑部邮箱 ,2002年11期
- 【分类号】TP13
- 【被引频次】10
- 【下载频次】139