Suppression of Disturbances in Networked Control Systems with Time-Varying Delay Based on Equivalent-Input-Disturbance Approach
Suppression of Disturbances in Networked Control Systems with Time-Varying Delay Based on Equivalent-Input-Disturbance Approach
复制标题
DOI：
10.1109/iecon.2019.8927201
复制
发表时间：
2019-10
期刊：
影响因子：
--
通讯作者：
Meiliu Li;Jinhua She;Zhentao Liu;Chuan‐Ke Zhang;Min Wu;Y. Ohyama;Xinkai Chen
中科院分区：
文献类型：
--
作者：
Meiliu Li;Jinhua She;Zhentao Liu;Chuan‐Ke Zhang;Min Wu;Y. Ohyama;Xinkai Chen
通过网络控制系统对工厂进行远程控制。来自网络和周围环境的干扰可能会降低此类系统的控制性能。为了解决这个问题，本文提出了一种抑制控制系统外源干扰的新方法。控制系统有一个状态观测器来估计被控对象的状态，还有一个等效输入干扰 (EID) 估计器来实时生成控制输入通道上的干扰估计。为了分析系统的稳定性，将系统分为两个子系统。以线性矩阵不等式的形式给出了时变时滞控制系统的稳定性条件。仿真验证了该方法的有效性。对比研究表明我们的方法优于传统的 Smith-EID 控制方法。
A plant is controlled remotely on a network for a networked control system. Disturbances from the network and surroundings may deteriorate the control performance of such a system. To solve this problem, this paper presents a new method of suppressing an exogenous disturbance for those control systems. The control system has a state observer to estimate the state of the plant and an equivalent-input-disturbance (EID) estimator to produce an estimate of the disturbance on the control input channel in a real-time fashion. The system is divided into two subsystems for the analysis of system stability. A stability condition of the control system with a time-varying delay is presented in terms of a linear matrix inequality. Simulations demonstrate the validity of the method. And a comparative study shows the superior of our method to a conventional Smith-EID control method.