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:
Sep. 03, 2002
Filed:
Nov. 06, 2000
Toshihiko Inoue, Minamitsuru-gun, JP;
Mitsuhiro Okuda, Minamitsuru-gun, JP;
Akihiro Terada, Fujiyoshida, JP;
Fanuc Ltd., Yamanashi, JP;
Abstract
An operation line tracking device for a robot for performing an operation with a tool mounted on the robot while tracking an operation line using a sensor wherein a detection failure of the sensor is restored by automatically changing or resetting a detecting condition of the sensor when the sensor fails in detecting the operation line. If a detection failure occurs for a cause of excessive or too small quantity of light impinged on light receiving elements of a laser sensor, a laser output intensity is automatically changed. If a detection failure occurs for a cause of basing of the quantity of the impinged light, an orientation of the laser sensor is automatically adjusted. If a detection failure occurs for a cause of biasing of position of the operation line in the visual field of the laser sensor, the position of the laser sensor is automatically adjusted. If a detection failure occurs for a cause of detection of an unexpected line, an algorithm for detecting the operation line is replaced with another one. Thus, the detecting condition is automatically changed or reset in accordance with the cause of the detection failure, and the tracking operation of the robot is automatically restarted.