Method for operating an electric motor for braking a vehicle, and control device for an electric motor designed at least for braking a vehicle

US9764720B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Andreas Erban · Bietigheim-Bissingen, DE
• Jochen Feinauer · Neuenstein, DE
• Bastian Richter · Stuttgart, DE
• Michael Knoop · Ludwigsburg, DE

Key dates

• Filing date: May 26, 2016
• Grant date: Sep 19, 2017
• Expiry date: May 26, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/72
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for operating an electric motor for braking a vehicle, including controlling the electric motor in such a way that the vehicle is slowed or decelerated with the aid of a motor braking torque exerted by the controlled electric motor. The method includes ascertaining whether a requested setpoint speed change is in a predefined normal range, and if so, the electric motor is controlled in such a way that a load to be applied by the electric motor remains less than or equal to a nominal load capacity of the electric motor. If the requested setpoint speed change is outside the predefined normal range, the electric motor is controlled in such a way that the load to be applied by the electric motor exceeds the nominal load capacity of the electric motor, at least during a predefined overload operation time interval.