多回路网络化控制系统级联反馈调度  

Cascaded Feedback Scheduling of Multi-loop Networked Control Systems

作　　者：夏锋[1] 孙优贤[1] 

机构地区：[1]浙江大学工业控制技术国家重点实验室,浙江杭州310027

出　　处：《信息与控制》2007年第3期328-333,339,共7页Information and Control

基　　金：高等学校博士学科点专项科研基金资助项目(20050335020)

摘　　要：针对动态环境下的多回路网络化控制系统,本文基于反馈控制与网络调度协同设计的思想,提出一种级联反馈调度策略.以优化系统整体控制性能为目标,根据可用带宽资源的动态变化,对控制回路采样周期进行在线调节,将截止期错过率控制在期望的较低水平,并对可用带宽进行优化分配.仿真实验结果表明,相对于传统设计方法,该方法能够明显改善整体控制性能.Based on the emerging methodology of feedback control and network scheduling codesign, a cascaded feedback scheduling scheme is proposed for multi-loop networked control systems that operate in dynamic environments. The goal is to optimize the overall control performance of the system. In response to dynamic variations of the available bandwidth resources, the sampling periods of the control loops are adjusted during run-time so that the deadline miss ratio is kept at a desired low level and the available bandwidth is distributed in an optimal fashion. Simulation results show that the proposed method can significantly improve the overall control performance in comparison with the traditional system design method.

关 键 词：网络化控制系统 反馈调度 控制与调度协同设计 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]