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. 29, 2012
Filed:
Feb. 27, 2008
Niclas Sjöstrand, Västerås, SE;
Ivan Lundberg, Västerås, SE;
Johan Gunnar, Västerås, SE;
Shiva Sander-tavallaey, Saltsjöbaden, SE;
Niclas Sjöstrand, Västerås, SE;
Ivan Lundberg, Västerås, SE;
Johan Gunnar, Västerås, SE;
Shiva Sander-Tavallaey, Saltsjöbaden, SE;
ABB Research Ltd., Zürich, CH;
Abstract
A method and an apparatus for detecting condition changes in a robot system. The method includes logging a work cycle representative signal at a first and a second occasion, logging, synchronously with the logging of the work cycle representative signal, a reference signal associated with work cycles at the first and second occasions, selecting the reference signal from signals having the following characteristics: a signal influenced by the path performed by the robot, a signal calculated by the robot system, and a signal that is identical at both the occasions if a manipulator of the robot performs a movement along exactly the same path at the first and second occasions, synchronizing the representative signals utilizing the logged reference signals, and comparing the synchronized signals to determine if any condition changes have occurred between the first and second occasions.