Method and system for calibrating a control device of an electric motor

A method for controlling an electric motor, comprising:

• operating the electric motor as part of a force flow;
• performing a force measurement by piezo elements, which are arranged in the force flow in such a way that the force flow is applied to the piezo elements;
• and
• setting at least one control parameter of the electric motor on the basis of at least one of a force component derived from the force measurement or a torque component derived from the force measurement, wherein the at least one control parameter is set based on at least one criterion, wherein the at least one criterion comprises:
• a torque rise time from 10% of a torque demand of the electric motor to 90% of the torque demand;
• or
• an intensity of overshoot of a value of 100% of the torque demand.

A system for calibrating a control device of an electric motor, which is part of a power train, comprising:

• piezo elements for performing a force measurement, wherein the piezo elements are arranged in a force flow in such a way that the force flow is applied to the piezo elements;
• an evaluation device arranged for deriving at least one of a force component or a torque component from the force measurement;
• and
• an adjusting device for adapting a control characteristic of the control device on the basis of at least one of the force component derived from the force measurement or the torque component derived from the force measurement, wherein the control characteristic is adapted based on at least one criterion, wherein the at least one criterion comprises:
• a torque rise time from 10% of a torque demand of the electric motor to 90% of the torque demand;
• or
• an intensity of overshoot of a value of 100% of the torque demand.

A system for controlling an electric motor, which is part of a force flow in a vehicle, comprising:

• piezo elements set up for carrying out a force measurement, the piezo elements being arranged in the force flow in such a way that the force flow is applied to the piezo elements;
• an evaluation device arranged for deriving at least one of a force component or a torque component from the force measurement;
• and
• a control device arranged for setting at least one control parameter of the electric motor on the basis of at least one of a force component derived from the force measurement or a torque component derived from the force measurement, wherein the at least one control parameter is set based on at least one criterion, wherein the at least one criterion comprises:
• a torque rise time from 10% of a torque demand of the electric motor to 90% of the torque demand;
• or
• an intensity of overshoot of a value of 100% of the torque demand.