基于PID优化的卧式数控车床电气自动控制系统  

Electrical Automatic Control System of Horizontal CNC Lathe Based on PID Optimization

作　　者：骆明霞 LUO Ming-xia(Engineering Training Center,Nanjing University of Posts and Telecommunications,Nanjing 210023 China)

机构地区：[1]南京邮电大学工程训练中心,江苏南京210023

出　　处：《自动化技术与应用》2023年第11期34-37,共4页Techniques of Automation and Applications

基　　金：南京邮电大学实验室工作研究课题(17020XSG1716)。

摘　　要：针对传统数控车床控制系统信号响应速率较慢、超调量较大的问题,提出设计基于PID优化的卧式数控车床电气自动控制系统。利用PID技术结合电气自动控制系统中脉冲信号阈值、过电流系数,构建数控车床中直电流传递函数,采用比例、微分调控、实际参数积分三种调节机制,计算自动控制程序的参数差值,利用积分法模拟替代差值,使数据差值逐渐逼近实际数值。通过总体控制方案、控制电路、数控工作台和自动急停装置的设计,组成完整的自动控制系统。实验结果表明,所提系统控制信号响应率及准确性较高,可实现有效的电气自动控制。Aiming at the problems of slow signal response rate and large overshoot of traditional CNC lathe control system,this paper pro-poses to design an electrical automatic control system of horizontal CNC lathe based on PID optimization.Using PID technology,combined with the pulse signal threshold and over-current coefficient in the electrical automatic control system,the direct current transfer function in the numerical control lathe is constructed.Three adjustment mechanisms of proportion,differential regulation and actual parameter integration are adopted to calculate the parameter difference of the automatic control program,and the inte-gral method is used to simulate and replace the difference,so that the data difference gradually approaches the actual value.Through the design of overall control scheme,control circuit,numerical control worktable and automatic emergency stop device,a complete automatic control system is formed.The experimental results show that the control signal response rate and accuracy of the proposed system are high,which can achieve effective electrical automatic control.

关 键 词：超调量 脉冲信号阈值 过电流系数 传递函数 数据积分法 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TG502.35[自动化与计算机技术—控制科学与工程]