摘要
采用工业通信网络的网络控制系统(networked control systems,NCS)具有开放性、速度快和强大的软硬件技术支持等优势,但不确定的网络时延对系统的稳定性和控制性能有着很大的影响。在实际的NCS中,不仅要求NCS稳定运行,而且还要求NCS满足一定的性能指标;同时,采用状态反馈是兼顾系统性能和敏感性的最有效的控制方式。针对一类具有不确定时延的状态反馈NCS,建模为不确定的线性时滞系统,利用Lyapunov理论和线性矩阵不等式(linear matrix inequality,LMI)方法研究NCS的保性能控制问题,给出NCS保性能控制律存在的条件和设计方法,最优保性能控制律的设计。
The NCS adopting industrial communication networks has many advantages,such as openness,high-speed,powerful hardware and software technical support and so on.But uncertain time-delay in networks has a great influence on the stability and control performance of systems.For an actual NCS,it should not only run steadily,but also satisfy a certain function index.At the same time,the applied state-feedback is the most effective control mode that takes account of both system function and sensibility.A class of state-feedback NCSs with uncertain time-delay are converted to the uncertain linear time-delay systems.Then by using the Lyapunov theory and LMI,the problems about guaranteed cost control are researched.The condition of existence of the guaranteed cost control law and the design method for the NCS are derived,and the design of an optimal guaranteed cost control law is given.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2010年第3期645-649,共5页
Systems Engineering and Electronics
关键词
网络控制系统
线性矩阵不等式
不确定时延
时滞系统
保性能控制
netwerked control system（NCS）
linear matrix inequality（LMI）
uncertain time-delay
time-delay system
guaranteed cost control
