Pathcorrection for an industrial robot

US7130718B2 · kind B2 · utility

Assignee

• ABB AB · SE

Inventors

• Svante Gunnarsson · Säter, SE
• Mikael Norrlöf · Säter, SE
• Geir Hovland · Bamaga, AU
• Ulf Carlsson · Täby, SE
• Torgny Brogardh
• Tommy Svensson · Fort Collins, US
• Stig Moberg · Visby, SE

Key dates

• Filing date: Apr 9, 2001
• Grant date: Oct 31, 2006
• Expiry date: Sep 3, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P90/80
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A method for an industrial robot to increase accuracy in movements of the robot. A first path is formed by bringing a tool supported by the robot to adopt a plurality of generated positions. A plurality of observed positions of the tool moving along the first path are determined. A second path is formed of the determined tool positions. A correction is determined by a path deviation between geometrically determined positions in the first path and the second path.