METHOD FOR CALIBRATING A TORQUE SENSOR ARRANGED IN THE DRIVETRAIN OF A MOTOR VEHICLE
The invention relates to a method for calibrating a torque sensor which is arranged in the drivetrain of a motor vehicle. In order to specify a method for calibrating a torque sensor which is arranged in the drivetrain of a motor vehicle, which method is less complex and therefore more cost-effective, firstly the uncalibrated torque sensor is arranged in the fully completed drivetrain in the motor vehicle and subsequently a first known value for a torque is applied to the drivetrain of the motor vehicle and then a second known value for a torque is applied to the drivetrain of the motor vehicle and the first output signal which is generated by the torque sensor is assigned to the first known value for a torque and the second output signal which is generated by the torque sensor is assigned to the second known value for a torque, the torque sensor being calibrated in the fully completed drivetrain of the motor vehicle in this way.
1 . A method for calibrating a torque sensor, comprising the steps of:
providing a torque sensor;
providing a first known value for a torque;
providing a second known value for a torque;
providing a first output signal;
providing a second output signal;
arranging the uncalibrated torque sensor in the fully completed drivetrain in the motor vehicle;
applying the first known value for a torque to the drivetrain of the motor vehicle;
applying the second known value for a torque to the drivetrain of the motor vehicle;
generating the first output signal using the torque sensor;
assigning the first output signal to the first known value for a torque;
generating the second output signal using the torque sensor;
assigning the second output signal to the second known value for a torque.
2 . The method for calibrating a torque sensor of claim 1 , further comprising the steps of:
providing a zero torque; and
providing the first known value for a torque to correspond to the zero torque;
applying the first known valve to the drivetrain of the motor vehicle.
3 . The method for calibrating a torque sensor of claim 2 , further comprising the steps of:
providing a clutch;
generating the zero torque by opening the clutch.
4 . The method for calibrating a torque sensor of claim 2 , further comprising the steps of:
providing a transmission;
generating the zero torque is generated by engaging neutral in the transmission.
5 . The method for calibrating a torque sensor of claim 1 , further comprising the steps of:
providing a maximum torque; and
providing the second known value for a torque to correspond to the maximum torque;
applying the maximum torque to the drivetrain of the motor vehicle.
6 . The method for calibrating a torque sensor of claim 5 , further comprising the steps of generating the maximum torque by driving under full load.
7 . The method for calibrating a torque sensor of claim 5 , further comprising the steps of generating the maximum torque by simulating driving under full load.
8 . The method for calibrating a torque sensor of claim 1 , further comprising the steps of:
providing a machine arranged outside of the motor vehicle;
applying the first known value for a torque to the drivetrain of the motor vehicle using the machine arranged outside of the motor vehicle;
applying the second known value for a torque to the drivetrain of the motor vehicle using the machine arranged outside of the motor vehicle.
9 . The method for calibrating a torque sensor of claim 1 , further comprising the steps of:
providing a machine arranged within the motor vehicle;
applying the first known value for a torque to the drivetrain of the motor vehicle using the machine arranged within the motor vehicle;
applying the second known value for a torque to the drivetrain of the motor vehicle using the machine arranged within the motor vehicle.
10 . The method for calibrating a torque sensor of claim 9 , further comprising the steps of providing the machine arranged within the motor vehicle to be an internal combustion engine of the motor vehicle.
11 . The method for calibrating a torque sensor of claim 10 , further comprising the steps of:
providing a characteristic map, the characteristic map representing a plurality of operatin characteristics of the internal combustion engine;
correlating the characteristic map of the internal combustion engine with the signals which are generated by the torque sensor.
12 . The method for calibrating a torque sensor of claim 9 , further comprising the steps of providing the machine which is arranged within the motor vehicle to be an electric motor of the motor vehicle.
13 . The method for calibrating a torque sensor of claim 12 , further comprising the steps of:
providing a characteristic map, the characteristic map representing a plurality of operatin characteristics of the electric motor;
correlating the characteristic map of the electric motor is correlated with the signals which are generated by the torque sensor.