摘要
讨论了时滞不确定组合系统的鲁棒分散输出控制问题.不确定项存在于子系统内部,可以是非线性或时变的,而且时滞存在互联项中,并满足匹配条件.不确定项是有界的,但界是未知的.利用自适应律来估计未知的上界,设计出分散无记忆输出控制器.基于Lyapunov稳定性理论和Lyapunov-K rasovsk ii函数,该控制器能够保证闭环系统的解是终极一致有界的.最后的仿真结果说明该设计方法是有效的.
The problem of robust decentralized stabilization is discussed for a class of uncertain delay composite systems. The system under consideration is with uncertainties in each subsystem and delayed states perturbations in the interconnections. The upper bounds of the uncertainties are assumed to be unknown. The adaptive laws are proposed to estimate such unknown bounds, and by making use of their updated values, a class of decentralized memoryless output feedback controllers is constructed. Based on Lyapunov stability theory and Lyapunov- Krasovskii function, the solutions to the closed-loop composite systems can be guaranteed to be uniformly ultimately bounded. Simulation results show that the control scheme is effective.
出处
《控制与决策》
EI
CSCD
北大核心
2006年第11期1224-1228,共5页
Control and Decision
基金
国家自然科学基金项目(60274009)
高等学校博士学科点专项科研基金项目(20020145007)
关键词
时滞不确定组合系统
输出反馈
自适应控制
终极一致有界
Uncertain delay composite systems
Output feedback
Adaptive control
Uniform ultimate boundedness
