Electric drive control

US6541934B1 · kind B1 · utility

Assignee

• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Klaus Hirschfelder · Herbertshausen, DE
• Christian Schmidt · Erfurt, DE

Key dates

• Filing date: Feb 16, 2001
• Grant date: Apr 1, 2003
• Expiry date: Feb 16, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60W2050/0011
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In a method for controlling an electric drive, a controlled variable is adjusted to a desired value. To protect the electric drive, the controlled variable is first adjusted to the desired value in a precise manner. Thereafter, the control operation is interrupted, AND the difference between the controlled variable and the desired value is check continuously to see whether it exceed a preset threshold. Interruption of the control operation is terminated when the threshold has been reached or exceeded.