Machine parameter tuning method and system

• US 20080183449A1
• Filed: 01/31/2007
• Published: 07/31/2008
• Est. Priority Date: 01/31/2007
• Status: Abandoned Application

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Grichnik, Anthony J., Seskin, Michael
• Application Number:
  US11/700,094
• Publication Number:
  US 20080183449A1
• Time in Patent Office: Days
• US Class Current: 703/8
• CPC Class Codes: B60W 40/10 related to vehicle motion

Abstract

A method for setting up setup parameters for a machine to perform a time-constraint task over a fixed course. The method may include establishing a process model indicative of interrelationships between performance parameters of the machine and a plurality of setup parameters of the machine based on data records generated by a computer system. The performance parameters may be associated with constraint parameters of the machine and the setup parameters are associated with condition parameters of the fixed course. The method may also include obtaining values of the condition parameters; adjusting the process model to generate a desired set of values of the setup parameters corresponding to a desired set of values of the performance parameters of the race car based on the values of condition parameters; and presenting the desired set of values setup parameters.

Claims

1. A method for setting up setup parameters for a machine to perform a time-constraint task over a fixed course, comprising:

establishing a process model indicative of interrelationships between performance parameters of the machine and a plurality of setup parameters of the machine based on data records generated by a computer system, wherein the performance parameters are associated with constraint parameters of the machine and the setup parameters are associated with condition parameters of the fixed course;

obtaining values of the condition parameters;

adjusting the process model to generate a desired set of values of the setup parameters corresponding to a desired set of values of the performance parameters of the race car based on the values of condition parameters; and

presenting the desired set of values setup parameters.

2. The method according to claim 1, wherein:

the machine is a race car;

the time-constrained task is a race; and

the fixed course is a race track.

3. The method according to claim 1, wherein:

the machine is an earthmoving machine;

the time-constrained task is an earthmoving task; and

the fixed course is a spatially-constrained work site.

4. The method according to claim 1, wherein the data records are generated by:

selecting the setup parameters with corresponding ranges;

obtaining respective values of the setup parameters within the corresponding ranges;

producing respective values of the performance parameters from the values of setup parameters based on one of a computer simulation of the machine configured with the values of setup parameters and a time-constraint task performed by the machine;

collecting respective values of the constraint parameters; and

collecting respective values of the condition parameters.

5. The method according claim 4, further including:

creating the data records including the values of the performance parameters, the constraint parameters, the setup parameters, and the condition parameters; and

presenting the data records.

6. The method according to claim 1, wherein the establishing includes:

selecting the plurality of input parameters including the setup parameters and the condition parameters from the data records;

generating a computational model indicative of the interrelationships between the input parameters and a plurality of output parameters including the performance parameters and the constraint parameters;

determining desired statistical distributions of the plurality of input parameters of the computational model; and

recalibrating the setup parameters based on the desired statistical distributions.

7. The method according to claim 6, wherein selecting further includes:

pre-processing the data records; and

using a genetic algorithm to select the plurality of input parameters from input variables of the data records based on a mahalanobis distance between a normal data set and an abnormal data set of the data records.

8. The method according to claim 6, wherein generating further includes:

creating a neural network computational model;

training the neural network computational model using the data records; and

validating the neural network computation model using the data records.

9. The method according to claim 6, wherein determining further includes:

determining a candidate set of values of the input parameters with a maximum zeta statistic using a genetic algorithm; and

determining the desired distributions of the input parameters based on the candidate set of values,

wherein the zeta statistic ζ

is represented by;

10. The method according to claim 1, wherein the setup parameters include one or more of spoiler angle, wedge, front left tire pressure, rear left tire pressure, front right tire pressure, rear right tire pressure, front sway bar thickness, front toe, rear sway bar thickness, gearbox ratio and rear toe.

11. The method according to claim 1, wherein the setup parameters include one or more of tool angle, tool type, tool linkage, front left tire pressure, rear left tire pressure, front right tire pressure, rear right tire pressure, hydraulic pressure, hydraulic flow, and gearbox ratio.

12. The method according to claim 1, wherein the condition parameters include ambient temperature and track temperature.

13. The method according to claim 1, wherein the condition parameters include ambient pressure and earth friction, mass and viscosity.

14. The method according to claim 1, wherein the performance parameters include average lap time and lap time variance.

15. The method according to claim 1, wherein the performance parameters include average task time and task time variance.

16. The method according to claim 1, wherein the constraint parameters include tire temperature, engine water temperature, and engine oil temperature.

17. The method according to claim 1, wherein the constraint parameters include one or more of tire temperatures, the engine water temperature, engine oil temperature, transmission oil temperature, hydraulic oil temperature, axle oil temperature, frame stress, and frame damage level.

18. A method for setting up setup parameters for a machine to perform a time-constraint task over a fixed course, comprising:

starting a process model indicative of interrelationships between performance parameters of the machine and a plurality of setup parameters of the machine based on data records generated by a computer system, wherein the performance parameters are associated with constraint parameters of the machine and the setup parameters are associated with condition parameters of the fixed course;

obtaining values of the condition parameters and the setup parameters, wherein the setup parameter includes hard setup parameters and soft setup parameters;

generating values of the performance parameters and the constraint parameters based on the process model and the values of the condition parameters and the setup parameters;

determining desired values of the setup parameters corresponding to desired values of the performance parameters with permissive values of the constraint parameters; and

presenting the desired set of values setup parameters.

19. The method according to claim 18, wherein the values of the condition parameters include recorded values of the condition parameters and the desired values of the setup parameters include desired values of both hard setup parameters and soft setup parameters.

20. The method according to claim 18, wherein the values of the condition parameters include actual values of the condition parameters and the desired values of the setup parameters include desired values of only soft setup parameters.

21. The method according to claim 18, wherein the values of the condition parameters include anticipated values of the condition parameters and the desired values of the setup parameters include desired values of only soft setup parameters.

22. A computer system, comprising:

a database containing data records associating a plurality of setup parameters and a plurality of performance parameters corresponding to a machine performing a time-constraint task on a fixed course; and

a processor configured to;

establish a process model indicative of interrelationships between performance parameters of the machine and a plurality of setup parameters of the machine based on data records generated by a computer system, wherein the performance parameters are associated with constraint parameters of the machine and the setup parameters are associated with condition parameters of the fixed course;

obtain values of the condition parameters;

adjust the process model to generate a desired set of values of the setup parameters corresponding to a desired set of values of the performance parameters of the race car based on the values of condition parameters; and

present the desired set of values setup parameters.

23. The computer system according to claim 22, wherein:

the machine is a race car;

the time-constrained task is a race; and

the fixed course is a race track.

24. The computer system according to claim 22, wherein:

the machine is an earthmoving machine;

the time-constrained task is an earthmoving task; and

the fixed course is a spatially-constrained work site.