METHOD AND DEVICE FOR ASCERTAINING OR EVALUATING A SETPOINT TRAJECTORY OF A MOTOR VEHICLE

• US 20160375907A1
• Filed: 06/20/2016
• Published: 12/29/2016
• Est. Priority Date: 06/26/2015
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Erban, Andreas
• Granted Patent: US 9,994,210 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/11 Stepped gearings
• CPC Class Codes: B60W 20/12 using control strategies taking into account route information estimation or calculation of non-directly measurable driving parameters B60W40/00
• CPC Class Codes: B60W 2530/10 Weight
• CPC Class Codes: B60W 2552/20 Road profile, i.e. the change in elevation or curvature of a plurality of continuous road segments
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 2720/103 Speed profile
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

A method for ascertaining a setpoint trajectory of a motor vehicle, an initial setpoint trajectory being planned and transmitted to an evaluation unit, a curve of a power characteristic variable, which is implementable as a function of the initial setpoint trajectory, being received from the evaluation unit, and a corrected setpoint trajectory being determined therefrom as a function of the ascertained implementable curve of the power characteristic variable.

Claims

1. A method for ascertaining a setpoint trajectory of a motor vehicle, comprising:

transmitting to an evaluation unit an initial setpoint trajectory;

receiving from the evaluation unit a curve of a power characteristic variable, which is implementable as a function of the initial setpoint trajectory; and

determining a corrected setpoint trajectory as a function of the implementable curve of the power characteristic variable.

2. The method as recited in claim 1, further comprising:

transmitting to the evaluation unit an initial setpoint curve of the power characteristic variable, wherein the received implementable curve of the power characteristic variable is a function of the ascertained initial setpoint curve of the power characteristic variable.

3. The method as recited in claim 2, wherein the received implementable curve of the power characteristic variable corresponds to an initial setpoint curve of the power characteristic variable which is restricted to a maximum power characteristic variable implementable by the motor vehicle.

4. The method as recited in claim 1, wherein the implementable curve corresponds to a fuel-efficient implementation of the initial setpoint trajectory.

5. The method as recited in claim 1, wherein the received implementable curve corresponds to a curve of a maximum power characteristic variable recuperable by a recuperation unit of the motor vehicle.

6. The method as recited in claim 1, wherein the implementable curve of the power characteristic variable is ascertained as a function of a friction coefficient of a roadway on which the motor vehicle is traveling.

7. A method for evaluating an initial setpoint trajectory of a motor vehicle, which is received from a trajectory planning unit, comprising:

ascertaining an implementable curve of a power characteristic variable as a function of the initial setpoint trajectory; and

transmitting to the trajectory planning unit the implementable curve of the power characteristic.

8. The method as recited in claim 7, wherein, in addition to the initial setpoint trajectory, an initial setpoint curve of the power characteristic variable is also received, and the implementable curve of the power characteristic variable is also ascertained as a function of the initial setpoint curve of the power characteristic variable.

9. The method as recited in claim 8, wherein the implementable curve of the power characteristic variable corresponds to the initial setpoint curve of the power characteristic variable restricted to a maximum power characteristic variable implementable by the motor vehicle.

10. The method as recited in claim 8, wherein the implementable curve corresponds to a fuel-efficient implementation of the initial setpoint trajectory.

11. The method as recited in claim 8, wherein the implementable curve corresponds to a curve of a maximum power characteristic variable recuperable by a recuperation unit of the motor vehicle.

12. The method as recited in claim 7, wherein the ascertained implementable curve of the power characteristic variable is ascertained as a function of a friction coefficient of a roadway on which the motor vehicle is traveling.

13. A non-transitory machine-readable storage medium on which is stored a computer program for ascertaining a setpoint trajectory of a motor vehicle, the computer program, when executed by a processor, causing the processor to perform:

transmitting to an evaluation unit an initial setpoint trajectory;

receiving from the evaluation unit a curve of a power characteristic variable, which is implementable as a function of the initial setpoint trajectory; and

determining a corrected setpoint trajectory as a function of the implementable curve of the power characteristic variable.

14. A non-transitory machine-readable storage medium on which is stored a computer program for evaluating an initial setpoint trajectory of a motor vehicle, which is received from a trajectory planning unit, the computer program, when executed by a processor, causing the processor to perform:

ascertaining an implementable curve of a power characteristic variable as a function of the initial setpoint trajectory; and

transmitting to the trajectory planning unit the implementable curve of the power characteristic.

15. A control unit configured to ascertain a setpoint trajectory of a motor vehicle, the control unit configured to:

transmit to an evaluation unit an initial setpoint trajectory;

receive from the evaluation unit a curve of a power characteristic variable, which is implementable as a function of the initial setpoint trajectory; and

determine a corrected setpoint trajectory as a function of the implementable curve of the power characteristic variable.

16. A control unit configured to evaluate an initial setpoint trajectory of a motor vehicle, which is received from a trajectory planning unit, the control unit configured to:

ascertain an implementable curve of a power characteristic variable as a function of the initial setpoint trajectory; and

transmit to the trajectory planning unit the implementable curve of the power characteristic.