超塑性微挤压装置温度控制系统研究  

Research on temperature control system of superplastic micro-extrusion device

作　　者：孙振锋[1] 齐乐华[1] 毛军[1] 杨方[1] 

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《计算机工程与应用》2008年第5期246-248,共3页Computer Engineering and Applications

基　　金：西北工业大学研究生种子基金(the Graduate Starting Seed Fund of Northwestern Polytechnical University)

摘　　要：针对研制超塑性微挤压装置中存在的温度控制对象大延迟特性,将PISmith预估控制算法应用于该装置的温度控制系统中,在MATLAB/Smulink环境下,结合快速原型开发概念,实现对温度参数的模型辨识和实时控制。温度控制系统由工控机与PCI-1710多功能数据采集卡组成,通过PWM调功输出实现恒温控制。温度控制实验表明,控制精度在±0.5℃范围以内,可以满足超塑性微挤压装置的温度控制精度。In the designing of superplastic micro-extrusion device,this paper applied a PI Smith predictor to the temperature control system for its time-delay characteristic.Based on the rapid prototyping instruction,the model identification control strategy of temperature parameter was realized in the MATLAB/Simulink environment.The temperature control system was composed of industrial control computer and data acquisition card PCI-1710.The power out was controlled by PWM method.The result of temperature control in experiment shows that the control precision is in the range of ±0.5℃,it can satisfy the design target.

关 键 词：SMITH预估控制 快速控制原型 PWM MATLAB/SIMULINK 

分 类 号：TP391.1[自动化与计算机技术—计算机应用技术]