Transactions of Materials and Heat Treatment

Title：Pneumatic control system of superplastic forming equipment based on OPC communication technology

Authors： Zhao Zhiheng Ji Yong Song Huan Lin Hangdong

Unit： Harbin Institute of Technology King′s College London

KeyWords： superplastic forming equipment KingView MATLAB OPC fuzzy PID pneumatic control system

ClassificationCode：TP273

year,vol(issue):pagenumber：2017,42(8):66-70

Abstract：

In order to improve the accuracy and real-time on the superplastic forming equipment in inflating process, the pneumatic control system which used KingView to carry out the control system operation data acquisition and realize the monitoring picture was designed, and the complex control algorithm was realized by MATLAB (Matrix Laboratory). Then, the data exchange interface between KingView and MATLAB/Simulink was designed by OPC (OLE for Process Control) technology, and the fuzzy PID control algorithm was realized by combining the advantages of industrial control configuration software and MATLAB in the pneumatic control system of superplastic forming equipment so as to achieve a more ideal control effect. The results of the practical application in the superplastic forming equipment show that the overshoot of step response of the traditional PID control is 16% and that of the fuzzy PID control is 8% when the adjustment time of the system is similar. It is verified that the control effect of the pneumatic control system on the inflating process is superior to the traditional scheme in the operation of equipment.

Funds：

国家科技重大专项（2014ZX04001171）

赵志衡（1971-），男，博士，教授冀勇（1993-），男，硕士研究生

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