Method for monitoring drives

Patent metadata

Field	Value
Publication number	US-9511760-B2
Application number	US-201514614074-A
Country	US
Kind code	B2
Filing date	Feb 4, 2015
Priority date	Feb 5, 2014
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A method is provided for monitoring torques, including the following steps in a first processing unit: Receiving a delta torque; in a first calculating process, calculating a first setpoint torque and a second setpoint torque from the delta torque; in a second calculating process, checking whether a difference of the first setpoint torque and of the second setpoint torque is less than, or equal to the delta torque, the second calculating process being carried out independently of the first calculating process; and output of the first setpoint torque and the second setpoint torque, only if the difference of the first and the second setpoint torque is less than, or equal to the delta torque.

First claim

What is claimed is:

1. A method for monitoring a torque of a vehicle, the method comprising:
receiving, via a first processing unit, a delta torque;
calculating, via the first processing unit, in a first calculating process, a first setpoint torque and a second setpoint torque from the delta torque;
checking, via the first processing unit, in a second calculating process, whether a difference of the first setpoint torque and of the second setpoint torque is less than, or equal to the delta torque, the second calculating process being carried out independently of the first calculating process; and
outputting the first setpoint torque the second setpoint torque, only if the difference of the first and the second setpoint torques is less than, or equal to the delta torque, to a second processing unit for controlling at least one electric motor, to ensure that no greater transverse torques are generated than is provided to avoid skidding by the vehicle.

2. The method as recited in claim 1 , wherein the first and the second setpoint torques are calculated from the delta torque and a third setpoint torque that is calculated from requirement values for the third setpoint torque.

3. The method as recited in claim 2 , wherein in the first processing unit a fourth setpoint torque is calculated from the requirement values, and from the fourth setpoint torque specified values for actuators are calculated and output.

4. The method as recited in claim 3 , wherein actual values, which result from an implementation of at least one of the specified values and an actual torque, which results from an implementation of the first and second setpoint torques, are received by the first processing unit and compared to an admissible torque calculated from the requirement values.

5. The method as recited in claim 3 , wherein the fourth setpoint torque is assigned to at least one of an internal combustion engine and actuators assigned to the internal combustion engine.

6. The method as recited in claim 2 , wherein the third setpoint torque is assigned to at least one electric motor.

7. The method as recited in claim 1 , wherein in the second calculating process, during the checking, signs of at least one of the delta torque, the first setpoint torque, and the second setpoint torque are taken into account.

8. The method as recited in claim 1 , wherein:
the first setpoint torque and the second setpoint torque are output to a second processing unit;
in the second processing unit a checking of the first and the second setpoint torques is carried out with the aid of an actual torque achieved from it.

9. The method as recited in claim 8 , wherein the delta torque is specified by a third processing unit.

10. The method as recited in claim 1 , wherein the first and the second setpoint torques are assigned to at least two different electric motors.

11. A processing unit for monitoring a torque of a vehicle, comprising:
receiving a delta torque;
in a first calculating process, calculating a first setpoint torque and a second setpoint torque from the delta torque;
in a second calculating process, checking whether a difference of the first setpoint torque and of the second setpoint torque is less than, or equal to the delta torque, the second calculating process being carried out independently of the first calculating process; and
outputting the first setpoint torque the second setpoint torque, only if the difference of the first and the second setpoint torques is less than, or equal to the delta torque, to a second processing unit for controlling at least one electric motor, to ensure that no greater transverse torques are generated than is provided to avoid skidding by the vehicle.

12. A machine-readable storage medium having a computer program, which is executable by a processor, comprising:
a program code arrangement having program code for monitoring a torque of a vehicle, by performing the following:
receiving, via a first processing unit, a delta torque;
calculating, via the first processing unit, in a first calculating process, a first setpoint torque and a second setpoint torque from the delta torque;
checking, via the first processing unit, in a second calculating process, whether a difference of the first setpoint torque and of the second setpoint torque is less than, or equal to the delta torque, the second calculating process being carried out independently of the first calculating process; and
outputting the first setpoint torque the second setpoint torque, only if the difference of the first and the second setpoint torques is less than, or equal to the delta torque, to a second processing unit for controlling at least one electric motor, to ensure that no greater transverse torques are generated than is provided to avoid skidding by the vehicle.

Assignees

• Bosch Gmbh Robert

Inventors

• Heyl Andreas
• Rall Astrid

Classifications

• B60W2540/10

  Accelerator pedal position · CPC title

• B60W2710/0666

  Engine torque · CPC title

• B60W2510/084

  Torque change rate · CPC title

• B60W10/06 Primary

  including control of combustion engines · CPC title

• B60W20/10 Primary

  Controlling the power contribution of each of the prime movers to meet required power demand · CPC title