预测函数控制在确定性网络控制系统中的应用
Application of Predictive Functional Control in Deterministic Networked Control Systems
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摘要: 针对网络控制系统具有不确定时滞的特性,通过在节点中设置缓冲区的方法将随机时滞转化为确定性时滞,从而将网络控制系统从随机系统转化为确定性时滞系统;针对这类时滞系统利用预测函数控制算法设计了控制器,以实现基于模型匹配和多步预测的思想来改善控制性能。通过仿真和基于DCS的模拟系统实验,结果均表明了该方法的正确性和有效性。Abstract: With regards to the characteristics of uncertain delay of networked control system,the stochastic time delay system can be transformed to a deterministic delay system by placing a special mount of buffers at the node in networked control systems.The controller based on predictive functional control is designed to improve the performance through model matching and multi-step predictive output compensation.The simulation results and experiment based on DCS show that the proposed methods are correct and effective.