电子束快速成型温度自适应模糊PID控制系统  

Electron Beam Rapid Prototyping Temperature Adaptive Fuzzy PID Control System

作　　者：陈云霞[1] 姚舜[1] 

机构地区：[1]上海交通大学焊接工程研究所,上海200240

出　　处：《控制工程》2009年第1期56-58,69,共4页Control Engineering of China

基　　金：国家科技部国际科技合作基金资助项目(2006DFB52680);上海市科委国际合作基金资助项目(061107030)

摘　　要：将自适应模糊PID控制技术应用于电子束快速成型温度控制系统中,通过温度采集装置实时得到被加工件的温度信号,与设定值进行对比从而得到温度偏差及偏差的变化率,将温度偏差及偏差的变化率作为模糊控制器的2个输入变量,以自适应模糊PID控制器输出控制量调节电子束流大小,实现电子束快速成型温度的闭环控制。仿真结果表明,该控制系统具有调整时间短、稳态误差小、超调量小,即在电子束快速成型过程中,采用自适应模糊PID控制器比采用传统的PID控制器或模糊控制器可以得到更好的动态响应性能和控制精度。The adaptive fuzzy PID control technology is used in the control of electron beam rapid prototyping process. The temperature signals of the workpiece are obtained online and compared with the set value, so as to get the error and the error change rate of the joint temperature, which act as the two inputs of the adaptive fuzzy PID controller. The controller gives appropriate control amounts according to its inputs to adjust the electron current, and the closed loop control of rapid prototyping temperature is realized. The simulation results show that the dynamic characteristic and control accuracy obtained with the adaptive fuzzy PID control are better than the traditional PID or fuzzy control.

关 键 词：电子束 自适应模糊控制 温度控制 快速成型 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]