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US 2023/0318503 A1Published application
End position detection of actuators
AssigneeAudi AG
InventorBernhard SCHWANTNER
Life of this patent
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Abstract
The present disclosure relates to a method and a device for end position detection of actuators.
Claims10
A method for detection of an end position of an actuator moved by an electric motor, the method comprising:
- actuating the electric motor using signal pulses;
- adding measured mutual induction voltages that are generated by the actuating;
- and
- detecting the end position if a sum of the measured mutual induction voltages reaches a given value.
1 more element
A module, comprising:
- a controller;
- at least one electric motor;
- and
- at least one actuator that is movable by the at least one electric motor,
- wherein the controller includes a semiconductor full bridge connected to the at least one electric motor, and a read back input connected to a plurality of outputs of the semiconductor full bridge,
- wherein the read back input forwards a plurality of mutual induction voltages to an analog-to-digital (A/D) converter of the controller, and
- wherein the controller, in operation, adds up the mutual induction voltages and compares a sum of the mutual induction voltages to a given end value.
4 more elements
Dependencies are inferred from the claim text.