基于广义预测控制算法(GPC)的网络闭环控制系统研究

网络控制系统中普遍存在的传输延时严重影响了系统的控制性能。针对这个问题,本文介绍了一个控制器由事件驱动、传感器和执行器由时间驱动的分布式系统模型。控制器采用了GPC控制算法,执行器节点设置控制增量缓冲区,以此来保证在网络存在随机时延情况下输出的控制量均为最优或者次最优,系统仍有良好的控制性能。

Research on GPC-based Closed Loop Network Control System

In order to relieve the degradation of the network control system (NCS) caused by the transfer delay,a distribute model is presented in this paper.The model includes an event-driven controller,a time-driven sensor and actuator.GPC algorithm is adopted in the controller. In the actuator node,a control increment memory is set so as to ensure the control output is optimal or hypo-optimal in case of random delay to remain a good control performance.