基于U模型的网络控制系统时延补偿研究  

Study on Time Delay Compensation for Network Control System Based on U Model

作　　者：张文彬 张晓寒 赵景波 朱敬旭辉 ZHANG Wen-bin;ZHANG Xiao-han;ZHAO Jing-bo;ZHU Jing-xu-hui(School of Information and Control Engineering,Qingdao University of Technology,Qingdao 266520,China)

机构地区：[1]青岛理工大学信息与控制工程学院,山东青岛266520

出　　处：《控制工程》2022年第11期2111-2116,共6页Control Engineering of China

基　　金：国家自然科学基金资助项目(51475251);山东省西部经济隆起带基层科技人才支持计划项目(XB2018CX023);山东省自然科学基金资助项目(ZR2013FM014);山东省高等学校科技计划项目(J12LN37)。

摘　　要：针对网络控制系统非线性问题解决方法少的情况,引入U模型方法进行被控对象建模,降低时延故障对网络控制系统造成的影响,结合广义预测控制(GPC)算法和PI控制器反馈结构,提出基于U模型的改进PI型广义预测控制方法 U-PIGPC。然后结合改进SSA-BP时延预测器,设计基于SSA-BP和U-PIGPC的网络控制系统时延补偿控制器。通过仿真对比验证了U-PIGPC补偿控制的性能优于GPC和U-GPC,其超调量更小,反应速度更快,具有更好的时延补偿控制效果。In view of the fact that there are few solutions to the nonlinear problem of the network control system, the U model method is introduced to model the controlled object to reduce the impact of time delay faults on the network control system. Combining the generalized predictive control algorithm and the feedback structure of the PI controller, an improved PI-type generalized predictive control method based on the U model is proposed. Then combined with the improved SSA-BP time delay predictor, the time delay compensation controller of the network control system based on SSA-BP and U-PIGPC is designed. Through simulation comparison, it is verified that the performance of U-PIGPC compensation control is better than that of GPC and U-GPC. Its overshoot is smaller, the response speed is faster, and it has a better time delay compensation control effect.

关 键 词：网络控制系统 非线性控制系统 时延补偿 预测控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]