Patent ID: 9304502
Filing Date: 2016-04-05
CPC Classification: F02D,G05B

Claim Text:
1. A method for calibrating a positioner system including an electronically commutated servomotor and an actuator that is influenced by a counter force and is coupled to said servomotor, wherein a position of the actuator is detected in order to obtain a position variable, and wherein the servomotor is commutated in order to generate a motor magnetic field based on a rotor position that is ascertained with an aid of the position variable, said method comprising: controlling the servomotor so that a first motor magnetic field of a first magnitude is generated, and ascertaining a first position variable for the position of the actuator that is aligned with the first motor magnetic field; controlling the servomotor so that a second motor magnetic field of a second magnitude is generated, and ascertaining a second position variable for the position of the actuator that is aligned with the second motor magnetic field, wherein the directions of the first motor magnetic field and the second motor magnetic field are identical; based on the first position variable and the second position variable, ascertaining a position variable that indicates a position of the actuator under the assumption that the actuator is not influenced by a counter force; and allocating the ascertained position variable to a rotor position that corresponds to the direction of the first motor magnetic field and second motor magnetic field.