Title :
Nonlinear electrical modeling for the resistance spot welding process
Author :
Dhandapani, Siva ; Bridges, Michael ; Kannatey-Asibu, Elijah, Jr.
Author_Institution :
Dept. of Mech. Eng. & Appl. Mech., Michigan Univ., Ann Arbor, MI, USA
Abstract :
This paper deals with the nonlinear modeling of the electrical subsystem associated with the resistance spot welding (RSW) process. This will be used in the design of model-based nonlinear control strategies to achieve welds of good quality. Switched-state, thyristor driven, linear and nonlinear transformer models have been developed that characterize the electrical dynamics. A detailed parameter estimation algorithm has also been implemented to identify the circuit parameters and the models have been validated against experimental results
Keywords :
control system synthesis; nonlinear control systems; parameter estimation; resistance welding; thyristor applications; RSW process; circuit parameter identification; electrical dynamics; electrical subsystem; linear transformer models; model-based nonlinear control design; nonlinear electrical modeling; nonlinear transformer models; parameter estimation; resistance spot welding process; switched-state transformer models; thyristor driven transformer models; Automotive materials; Circuits; Coils; Electric resistance; Feedback control; Joining materials; Magnetic cores; Spot welding; Thyristors; Vehicle dynamics;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.782765
