网络串级控制系统的事件触发控制器设计  

Event-triggered controller design of networked cascade control systems

作　　者：杜昭平[1] 袁文荣 DU Zhao-ping;YUAN Wen-rong(College of Electronics and Information,Jiangsu University of Science and Technoloty,Zhenjiang 212003,China)

机构地区：[1]江苏科技大学电子信息学院,江苏镇江212003

出　　处：《控制与决策》2018年第8期1527-1531,共5页Control and Decision

基　　金：国家自然科学基金项目(61304249;61374063);江苏省自然科学基金项目(BK20161361)

摘　　要：为了减少有限网络带宽不必要的浪费,针对一类网络串级控制系统,首次引入事件触发机制,并在此基础上考虑系统的串级控制器设计问题,通过对系统稳定性进行分析,设计可靠的主控制器和副控制器.考虑信号传输造成的时延影响,首先建立带有事件触发机制的网络串级控制系统数学模型;然后利用李雅普诺夫稳定性理论和线性矩阵不等式技术,给出基于事件触发机制的系统稳定的充分条件,并且设计相应的主控制器和副控制器;最后通过仿真实例验证所提出的方法在网络串级控制系统中的有效性,即引入事件触发机制后,设计的主、副控制器使得在系统稳定的前提下,信号传输的间隔变大,从而减小网络的拥塞,提高网络带宽的有效利用率.Concerning the problem of controller design for a class of networked cascade control systems, based on the stability analysis, the reliable primary and secondary controllers are designed, an event-triggered scheme is introduced to reduce the unnecessary waste of the limited network bandwidth resources for the first time. Firstly, considering the effect of the transmission delay, a model with the event-triggering scheme is constructed. Then, by using the Lyapunov stability theory and linear matrix inequality technique, some sufficient conditions of stability are proposed and the corresponding primary and secondary controllers are also obtained for the systems. Finally, a simulation example is given to illustrate the effectiveness of the proposed method. That is to say, with the introduction of the event-triggered scheme, the designed primary and secondary controllers make the interval of signal transmission larger under the premise of system stability,thus the congestion of network is reduced and the effective utilization of network bandwidth is improved.

关 键 词：网络串级控制系统 事件触发机制 建模 稳定性 主控制器 副控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]