A method of tuning PID parameters for P-GMAW based on physical experiments  

作　　者：林放 黄文超 魏仲华 高理文 薛家祥 

机构地区：[1]School of Mechanical and Automotive Engineenng, 3outla China University of Technology, Guangzhou, 510640 [2]Department of Electromechanical Technology, Jiangmen Polytechnic, Jiangmen, 529000

出　　处：《China Welding》2011年第1期59-63,共5页中国焊接（英文版）

摘　　要：To improve welding quality, a method of proportional-integral-differential （PlD） parameters tuning based on pulsed gas metal arc welding （P-GMAW） control was put forward. Aiming at the request of dynamic responsiveness of PGMA W constant current control, a self-developed welding waveform wavelet analyzer was employed. By tuning the proportional parameter, integration time and differential time in sequence, the optimal PID parameters could be achieved. The results showed that, due to the PID parameters tuned by this method, the welding process was stable and the weld bead appearance was nice. The requirement of dynamic responsiveness of P-GMAW constant current control was fully met.To improve welding quality, a method of proportional-integral-differential （PlD） parameters tuning based on pulsed gas metal arc welding （P-GMAW） control was put forward. Aiming at the request of dynamic responsiveness of PGMA W constant current control, a self-developed welding waveform wavelet analyzer was employed. By tuning the proportional parameter, integration time and differential time in sequence, the optimal PID parameters could be achieved. The results showed that, due to the PID parameters tuned by this method, the welding process was stable and the weld bead appearance was nice. The requirement of dynamic responsiveness of P-GMAW constant current control was fully met.

关 键 词：pulsed gas metal arc welding （p-GMAW） PID controller parameter tuning 

分 类 号：TG444.7[金属学及工艺—焊接] TP273[自动化与计算机技术—检测技术与自动化装置]