Method of positioning a part

US5777446A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Norbert Knab · Appenweier, DE
• Holger Pruessel · Bühl, DE

Key dates

• Filing date: Jul 12, 1996
• Grant date: Jul 7, 1998
• Expiry date: Jul 12, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B2219/45242
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method of positioning a part includes the steps of reciprocatingly moving a part between two end positions by a drive, generating a control signal for the drive upon reaching the end positions, stopping the drive or changing a drive direction of the drive upon receipt of the control signal; detecting a position of the drive after a first reaching of at least one of the end positions by the part, storing the detected position of the drive, and during further approaches of the end positions by the part, stopping the drive or changing the drive direction before reaching the end positions. After a selectable number of approaches of the part to at least one of the end positions the drive is stopped only when the end position is reached and the position of the drive is detected and stored once again.