Method and circuit arrangement for limiting peak currents and the slope of the current edges

US9362862B2 · kind B2 · utility

Assignee

• Continental Teves AG & Co. OHG · DE

Inventors

• Micha Heinz · Darmstadt, DE
• Frank Michel · Rosbach, DE

Key dates

• Filing date: Mar 5, 2013
• Grant date: Jun 7, 2016
• Expiry date: Mar 21, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02P29/032
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for limiting peak currents, particularly depending on a charge quantity provided by a voltage source, and the maximum pitch of the current flanks of an electric motor for an electrohydraulic motor vehicle brake system, particularly a pump motor, controlled by pulse width modulation, wherein a change to an actual duty cycle of the PWM is made by a first duty cycle of the PWM on a second duty cycle at runtime, wherein the change takes place according to a positive or negative pitch value calculated and/or changeable at runtime. The invention further describes an electronic circuit arrangement for the implementation of a method for limiting peak currents and the maximum pitch of current flanks.