巨型模锻液压机同步系统的模糊PID控制研究  

Research on fuzzy PID control for synchronization system of giant die forging hydraulic press

作　　者：刘忠伟[1] 青先麒 

机构地区：[1]湖南工业大学机械工程学院,湖南株洲412007

出　　处：《锻压技术》2015年第4期89-96,共8页Forging & Stamping Technology

基　　金：高性能复杂制造国家重点实验室开放课题基金资助项目(HPCM-3-13011)

摘　　要：巨型模锻液压机同步系统性能的好坏直接决定锻件的加工质量。由于存在摩擦、复杂偏心载荷以及时变的液压参数等影响,建立精确的同步系统数学模型非常困难,因此给模锻同步系统的高精度控制带来了严峻的挑战。针对这一问题,借助AMESim与Simulink软件,搭建同步系统的联合仿真平台;提出算法简便、自适应性较强且易于实现的模糊PID控制方法;最后,进行不同工况中多种载荷作用下的一系列计算机仿真。仿真结果表明:模糊PID控制能够达到同步系统的控制精度要求,且控制效果比传统PID控制效果好。The synchronous system performance of the giant die forging hydraulic press directly determines the quality of its processing products. It is difficult to set up precise mathematical model of the synchronous system due to friction, complex eccentric load and on time-varying parameters of hydraulic. Therefore, the severe challenges are brought to control the synchronization system in high precision. To solve this problem, a joint simulation platform of the synchronization system was set up by AMESim and Simulink softwares, and the fuzzy PID control method with simple algorithm, strong adaptability and easy application was put forward. At last, a series of the computer simulations were performed in a variety of loads under different conditions. The simulation results show that the fuzzy PID control can a- chieve the control accuracy required by the synchronization system, and its control effect is better than that of the traditional PID.

关 键 词：巨型模锻液压机 同步系统 模糊控制 仿真 

分 类 号：TG315.4[金属学及工艺—金属压力加工] TP273[自动化与计算机技术—检测技术与自动化装置]