A thermal dynamical model based control of resistance spot welding

Author

Kas, Ziyad ; Das, Mangal

Author_Institution

Dept. of Electr. & Comput. Eng., Oakland Univ., Rochester, MI, USA

fYear

2014

fDate

5-7 June 2014

Firstpage

264

Lastpage

269

Abstract

Resistance Spot Welding (RSW) is a process in which contacting metal surfaces are joined by the heat obtained from resistance to electric current. Inconsistent welds and insufficient nugget size are some of the problems in RSW. As a remedy to these problems a novel RSW control approach is proposed in this paper. The RSW control design is based on a thermal dynamical model. The controllers proposed are One-Step-Ahead, Weighted One-Step-Ahead, and Proportional-Integral-Derivative (PID). The designed controllers force the nugget temperature profile to follow a desired reference temperature profile. Results of some simulation studies are also presented.

Keywords

control system synthesis; spot welding; temperature control; three-term control; PID controller; RSW control approach; RSW control design; nugget temperature profile; one-step-ahead controller; proportional-integral-derivative controller; resistance spot welding; thermal dynamical model based control; weighted one-step-ahead controller; Electrodes; Heating; Mathematical model; Surface resistance; Temperature measurement; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Electro/Information Technology (EIT), 2014 IEEE International Conference on

Conference_Location

Milwaukee, WI

Type

conf

DOI

10.1109/EIT.2014.6871774

Filename

6871774