عنوان	Designing of a static frequency observer for GMAW process in the globular transfer mode
نوع پژوهش	ارائه مقاله در کنفرانس‌های علمی
کلیدواژه‌ها	GMAW , Globular , Least squares error , Short time frequency transform
چکیده	In the welding process, droplet detachment regularity is important for a good welding quality. The frequency of detachment is one of influential indices for assessing the quality of GMAW in the globular transfer mode. In this paper, a relationship is estimated for measuring droplet detachment frequency in the globular GMAW. The droplet detachment frequency is estimated with a curve fitting by the least squares error (LSE) method. By using short time frequency transform (STFT) we can extract the frequency contents from the mass of drop that is one of the states in the welding model.
پژوهشگران	محسن خلیلی (نفر اول)، محمد حائری (نفر دوم)، علیرضا دودمان تیپی (نفر سوم)