锻压技术

基于模糊PID的数控折弯机比例伺服控制系统

英文标题：Proportional servo control system of CNC bending machine based on fuzzy PID

作者：王勇郑昊马雷葛园园

单位：合肥工业大学

分类号：TP13

出版年,卷(期):页码：2016,41(11):98-103

摘要：

折弯产品质量的提高对折弯机加载系统的准确性与快速响应能力提出了更高的要求。基于一款折弯机电液比例伺服控制系统，建立了其非线性数学模型并验证了系统稳定性。为消除系统稳态误差并提高响应速度，提出模糊PID控制策略，整定了PID控制参数，并对其进行了仿真试验，从而减小了系统的稳态误差，提高了其响应速度，并避免了人为调整PID控制参数的随机性，提高了控制系统的工作效率。

To improve the quality of bending products, higher requirements on the accuracy of the loading system of the bending machine and the rapid response capability were put forward. Then, a nonlinear mathematical model of the electro-hydraulic proportional servo control system was established, and the stability of the system was verified. In order to eliminate the steady-state error of the system and increase the response speed, the fuzzy PID control strategy was put forwards, the PID control parameters were confirmed, and the simulation test was carried out. Furthermore, the steady-state error of the system is reduced, and the response speed is improved. Finally, the randomness of adjustment PID control parameters by hands is avoided, and the working efficiency of the control system is improved.

基金项目：

安徽省重点实验室建设项目（JZ2015AKSY0543）；基于机器人并可远程故障诊断的柔性剪折机床研发（W2015JSKF0461）

王勇（1969-），男，博士，副教授郑昊（1990-），男，硕士研究生

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