The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 2011
Filed:
Jan. 24, 2008
Shixin HU, Ann Arbor, MI (US);
Wenkao Hou, Ypsilanti, MI (US);
Hao Du, Ann Arbor, MI (US);
Pei-chung Wang, Troy, MI (US);
Roland J. Menassa, Macomb, MI (US);
Shixin Hu, Ann Arbor, MI (US);
Wenkao Hou, Ypsilanti, MI (US);
Hao Du, Ann Arbor, MI (US);
Pei-Chung Wang, Troy, MI (US);
Roland J. Menassa, Macomb, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
The Regents of the University of Michigan, Ann Arbor, MI (US);
Abstract
A method is provided for monitoring and controlling the process consistency of an arc welding process. The weld voltage signal is monitored and analyzed to determine the occurrence of the detachment of a weld droplet. The weld droplet detachment is determined via statistical techniques as having occurred at a normal interval following a prior detachment indicating consistent weld process or as a sporadic detachment having occurred at an irregular interval with respect to the prior detachment and indicating inconsistent weld process. The weld process is adjusted by controlling the weld process variables to maximize the predominance of droplet detachment at normal intervals and minimize the occurrence of the sporadic detachments.