Method for operating a drive unit of a vehicle operable by muscle power and/or motor power
AssigneeRobert Bosch GmbH
InventorsAlexander Reimann, Florian Geyer, Jochen Unmuth, Timo Benzel
Life of this patent
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Abstract
A method for operating a drive unit of a vehicle operable by muscle power and/or motor power and comprising an electric motor and a control unit includes, in response to a system start of the drive unit, actuating the electric motor at a start current such that the electric motor rotates in a reverse direction of rotation.
Claims20
A method for operating a drive unit of a vehicle operable by muscle power and/or motor power and comprising an electric motor and a control unit, comprising:
- performing a system start of a system including the drive unit by starting the drive unit;
- and
- actuating, in response to the system start of the drive unit, the electric motor at a start current configured such that the electric motor rotates in a reverse direction of rotation without a generation of torque which propels the vehicle.
A method for operating a drive unit of a vehicle operable by muscle power and/or motor power and comprising an electric motor and a control unit, comprising:
- actuating the electric motor at a start current configured such that the electric motor rotates in a reverse direction of rotation;
- and
- further actuating the electric motor at a test current in a non-torque generating direction during the actuating at the start current.
A method for operating a drive unit of a vehicle operable by muscle power and/or motor power and comprising an electric motor and a control unit, comprising:
- performing a system start of a system including the drive unit by starting the drive unit;
- actuating, in response to the system start of the drive unit, the electric motor at a start current configured such that the electric motor rotates in a reverse direction of rotation;
- further actuating the electric motor at a test current in a non-torque generating direction during the actuating at the start current;
- estimating at least one motor parameter of the electric motor during the further actuation of the electric motor at the test current;
- and
- detecting an angular change of an electric angle, a test voltage in the non-torque generating direction, and the test current in the non-torque generating direction during the further actuation of the electric motor at the test current,
- wherein the estimation of the at least one motor parameter is performed by calculating a previously known machine model of the electric motor based on the detected angular change, and/or the detected test voltage, and/or the detected test current.
A method for operating a drive unit of a vehicle operable by muscle power and/or motor power and comprising an electric motor and a control unit, comprising:
- actuating the electric motor at a start current configured such that the electric motor rotates in a reverse direction of rotation;
- further actuating the electric motor at a test current in a non-torque generating direction during the actuating at the start current;
- estimating at least one motor parameter of the electric motor during the further actuation of the electric motor at the test current;
- and
- detecting an angular change of an electric angle, a test voltage in the non-torque generating direction, and the test current in the non-torque generating direction during the further actuation of the electric motor at the test current,
- wherein the estimation of the at least one motor parameter is performed by calculating a previously known machine model of the electric motor based on the detected angular change, and/or the detected test voltage, and/or the detected test current.
Dependencies are inferred from the claim text.