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:
May. 27, 2014
Filed:
Dec. 14, 2011
Jianying Shi, Oakland Township, MI (US);
David Groll, Rochester Hills, MI (US);
Peter W. Tavora, Sterling Heights, MI (US);
Jianying Shi, Oakland Township, MI (US);
David Groll, Rochester Hills, MI (US);
Peter W. Tavora, Sterling Heights, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A system for a work cell having a carrier that moves a product along an assembly line includes an assembly robot, sensor, and controller. An arm of the robot moves on the platform adjacent to the carrier. The sensor measures a changing position of the carrier and encodes the changing position as a position signal. The controller receives the position signal and calculates a lag value of the robot with respect to the carrier using the position signal. The controller detects a requested e-stop of the carrier when the arm and product are in mutual contact, and selectively transmits a speed signal to the robot to cause a calibrated deceleration of the platform before executing the e-stop event. This occurs only when the calculated tracking position lag value is above a calibrated threshold. A method is also disclosed for using the above system in the work cell.