基于事件触发机制的电液伺服位置控制研究  

Event-Triggered Control for Electrohydraulic Servo Control System

作　　者：俞龙桥 

机构地区：[1]上海理工大学机械工程学院,上海

出　　处：《建模与仿真》2024年第2期1565-1576,共12页Modeling and Simulation

摘　　要：网络化控制策略具有远程控制、资源共享等优越性,被广泛运用于电液伺服系统。针对其在控制过程中可能存在的带宽受限、外干扰不确定性等问题,本文提出一种创新的基于事件触发机制控制策略。使用混合事件触发机制有效减少通信数据量,显著提高了带宽利用率。通过双层扩展观测器同时估计未建模误差与非线性外干扰。通过Lyapunov函数以分析闭环系统的全局稳定性,构造具有不确定性观测的事件触发控制器。通过仿真数据验证了所提出控制器在保证跟踪性能的前提下减少了冗余的信号量。The networked control strategy, renowned for its superior capabilities in remote control and resource sharing, is widely employed in electro-hydraulic servo systems. To tackle inherent challenges in the control process, such as bandwidth limitations, uncertainties in external disturbances, this paper introduces an innovative approach. It is based on an Event-Triggered Mechanism. The implementation of a hybrid Event-Triggered Mechanism effectively reduces communication data load, significantly enhancing bandwidth utilization. This is achieved by employing a dual-layer Extended State Observer (ESO) to concurrently estimate unmodeled errors and nonlinear external disturbances. Use the Lyapunov function, allows for the analysis of global stability in the closed-loop system. This leads to the development of Event-triggered controller with uncertainty observation capabilities. Simulation data corroborate the proposed controller’s efficiency in reducing redundant signal transmission while ensuring robust tracking performance.

关 键 词：电液伺服控制系统 网络控制 事件触发策略 位置跟踪 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]