Title :
Crosscorrelation functions based nonlinear identification of diode laser welding process
Author :
Zhang, Yu ; Liu, Yusheng ; Na, Xiaodong ; Zhang, YuMing
Author_Institution :
Dept. of Autom., Sichuan Univ., Chengdu
Abstract :
The diode laser welding process is a typical nonlinear system with disturbances and noises. To obtain unbiased estimates for unknown parameters, an identification method based on correlation functions is preferred. In this paper, a nonlinear identification method based on crosscorrelation functions is used to establish a nonlinear model, which is linear in parameters, for the diode laser welding process addressed. The model has been validated by the comparison of the computed step response with the actual step response.
Keywords :
correlation methods; laser beam welding; least mean squares methods; semiconductor lasers; step response; crosscorrelation functions; diode laser welding process; least squares method; nonlinear identification; nonlinear model; nonlinear system; step response; unknown parameters; Computer aided manufacturing; Diode lasers; Laser noise; Least squares methods; Manufacturing automation; Nonlinear systems; Optical control; Power lasers; Process control; Welding; Crosscorrelation function; least squares method; nonlinear system; welding process;
Conference_Titel :
Industrial Technology, 2008. ICIT 2008. IEEE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-1705-6
Electronic_ISBN :
978-1-4244-1706-3
DOI :
10.1109/ICIT.2008.4608542
