US 8,800,882 B2 · Device and method for operating a drive

Abstract

A device and a method for operating a drive having a mechanically commutated electric motor, is provided, wherein a rotary position of the drive is determined by a circuit from a ripple of a motor current of the electric motor, wherein at least one correction value is determined for an error characteristic of the electric motor, wherein at least one correction value is determined for an error characteristic of the electric motor, in that the drive is moved to a reference position that can be sensed by means of a position sensor, in that the drive is moved from the reference position into a plurality of positions at a distance from the reference position and at least one position deviation is determined by the circuit, and in that the correction value is determined from the particular position deviation and stored.

Claims11

Dependent claims

A method for operating a drive with a mechanically commutated electric motor, the method comprising:

determining a rotational position of the drive by a circuit from a ripple of a motor current of the electric motor;
determining at least one correction value for an error characteristic of the electric motor;
moving the drive to a reference position that is sensed via a position sensor;
moving the drive, starting from the reference position, into multiple positions at distances from the reference position;
determining at least one position deviation by the circuit;
determining the correction value from the position deviation that has been determined;
and
storing the correction value.

5 more elements

Dependencies are inferred from the claim text.

Device and method for operating a drive

Life of this patent

Device and method for operating a drive

Life of this patent

Abstract

Claims11