Method and device for calibrating a positioner system having an electronically commutated servomotor

摘要

A method for calibrating a positioner system that has an electronically commutated servomotor and a counterforce-loaded actuator coupled thereto includes actuating the servomotor such that a first motor magnetic field of a first strength is generated and determining a first position specification for the position of the actuator aligned to the first motor magnetic field. The servomotor is actuated such that a second motor magnetic field of a second strength is generated and a second position specification for the position of the actuator aligned to the second motor magnetic field is determined. Based on the first and the second position specifications, a position specification which indicates a position of the actuator under the assumption that the actuator is not loaded with a counterforce is determined. The determined position is allocated to a rotor position which corresponds to the direction of the first and second motor magnetic field.

主权项

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.