【作者】 柴琳； 费树岷； 辛云冰；

【Author】 CHAI Lin, FEI Shu-min,XIN Yun-bing (Institute of Automation,Southeast University,Nanjing 210096,China)

【机构】 东南大学自动化研究所；

【摘要】 针对一类单时滞的线性时滞系统,为对其未知的状态时滞参数进行自适应控制,基于LMI方法,采用一种基于“描述形式”的Lyapunov-Krasovskii泛函和新型的带记忆的状态反馈控制,使得参数自适应律能反映实时估计值与实际接近值之间的差值,从而突破以往自适应控制对估计值的大小限制和调整参数计算的困难,给出了一种新型的保守性较小、简便、实用的自适应律,仿真实例证明了该控制方案的有效性。更多还原

【Abstract】 A method of LMI, a kind of Lyapunov-Kxasovskii functional based on "descriptor form", and a new type of memory state feedback controller are used to stabilize a class of linear time-delay systems with an unknown state delay. At the same time, the new type of adaptive control strategy for delay parameters of the state vector, which isn t limited in the estimated value as the old adaptive controllers, manages to eliminated difficulty in calculating by reflecting the difference between the estimated value and the value being close to the practical, is proposed in this paper. As an result, the strategy is less conservative,more simple and convenient. The sufficient condition of the solution is given with a numerical example.更多还原