一种阀控液压马达控制系统的优化设计

Optimal Design of Valve-controlled Hydraulic Motor Control System

为提高液压马达输出功率的稳定性,以保持其良好的负载能力为目标,设计一种恒定功率自动控制系统。介绍阀控液压马达控制系统的基本结构与工作原理,搭建了系统模型并进行仿真分析。以比例换向阀、传感器、PID控制环节为设计核心,完成阀控液压马达PID控制系统的优化设计,利用AMESim绘制具有PID控制环节的阀控液压马达控制系统仿真模型。进行PID控制系统的仿真实验,分析在负载不断变化情况下一般控制系统与PID控制系统的负载变化特征。结果证明:PID控制系统具有较好的系统压力调节作用,增强了阀控液压马达控制系统的精度和负载能力。

In order to improve the stability of output power of hydraulic motor and keep its good load capacity,a constant power automatic control system is designed.With the introduction of the basic structure and working principle of the valve-controlled hydraulic motor control system,the system model is built and the system simulation is conducted.With the proportional directional valve,sensor and PID control as the design core,the optimization design of the PID control system of the valve-controlled hydraulic motor is completed,and the simulation model of the valve-controlled hydraulic motor control system with PID control link is drawn by AMESim.The simulation experiment of PID control system is carried out to analyze the load variation characteristics of general control system and PID control system under the condition of constant load change.The results show that the PID control system has a good pressure regulation function and enhances the accuracy and load capacity of the valve controlled hydraulic motor control system.