三峡船闸双边人字闸门随动控制仿真研究

Simulation study on follow-up control of double miter gate of Three Gorges ship lock

为提高船闸人字闸门运行效率,以三峡船闸双边人字闸门液压起闭控制系统为对象,以三环PID控制系统设计为基础,采用双比例泵/电机组交叉耦合补偿的原理与方法搭建了人字闸门三环PID随动控制系统仿真模型。通过MATLAB/Simulink软件仿真与船闸实际PLC控制系统运行曲线的对比,发现双边人字闸门随动控制仿真系统关门历时2.1 min,开门历时2.2 min,原PLC随动控制系统关门历时5.2 min,开门历时3.1 min,该仿真系统能大大提升系统响应的快速性,且不影响系统的稳定性和准确性。研究成果对于船闸双边人字闸门随动控制系统的技术改进和三峡新通道船闸控制系统建设具有借鉴意义。

In order to improve the operation efficiency of miter gates,taking the hydraulic control system of Three Gorges ship lock's gate as the research object,based on the design of three-loop PID control system,the simulation model of three-loop PID servo control system for the miter gate was built by using the principle of cross coupling compensation of double proportional pump/electric unit.By comparing the simulation results of MATLAB/Simulink software with the operation curve of the actual PLC control system of the ship lock,it was found that the closing time of the bilateral miter gate by servo control simulation system was 2.1 min,and the opening time was 2.2 min,while the closing time under original PLC servo control system was 5.2 min,and the opening time was 3.1 min.This simulation system can greatly improve the rapidity of system response without affecting the stability and accuracy of the system.The research results can be used for reference for the technical improvement of the servo control system of the double miter gate and the construction of the new channel lock control system of the Three Gorges Project.