METHOD AND SYSTEM FOR TIRE EVALUATION AND TUNING WITH LOADING SYSTEM AND VEHICLE MODEL
First Claim
1. A system for characterizing and or evaluating tires and or conducting numerical vehicle simulations, comprising:
- a test rig on which at least one tire under test is mountable, the test rig controllably imposing forces and motions on the tire under test; and
a vehicle model module that includes;
a data processor for processing data; and
a data storage device configured to store;
data related to a vehicle model that simulates a full vehicle except for characteristics of the tire under test;
data related to a road description;
data related to maneuvers and/or driver behaviors;
test rig parameters, controller parameters, test data . . . and machine-executable instructions, wherein the instructions, upon execution by the data processor, control the vehicle model module to produce command signals based on the vehicle model and the road description to control the test rig to apply loads on the tire and to feed back measured responses of the test rig to the vehicle model.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and system for evaluating and tuning tires includes a test rig on which one or more physical tires are mounted. A full vehicle model and a road description are used with the test rig to test and evaluate the tire as would be conducted on a real test track. The full vehicle model is modified to remove the characteristics of the tire or tires under test. The remainder of the full vehicle model produces output signals in the form of displacements or loads that are transmitted as inputs to the test rig to apply those signals. The test rig measures output signals in the form of complementary displacements or loads that will become inputs to the vehicle model in place of the removed model of the tire under test. In this manner, the physical tire under test is inserted into a real time model of the full vehicle, road and driver.
-
Citations
28 Claims
-
1. A system for characterizing and or evaluating tires and or conducting numerical vehicle simulations, comprising:
-
a test rig on which at least one tire under test is mountable, the test rig controllably imposing forces and motions on the tire under test; and a vehicle model module that includes; a data processor for processing data; and a data storage device configured to store;
data related to a vehicle model that simulates a full vehicle except for characteristics of the tire under test;
data related to a road description;
data related to maneuvers and/or driver behaviors;
test rig parameters, controller parameters, test data . . . and machine-executable instructions, wherein the instructions, upon execution by the data processor, control the vehicle model module to produce command signals based on the vehicle model and the road description to control the test rig to apply loads on the tire and to feed back measured responses of the test rig to the vehicle model. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method of evaluating tires, comprising:
-
mounting at least one tire on a test rig; inducing rotation of the tire with a simulated roadway on the test rig; modeling a full vehicle model excluding the tire on the test rig; predicting motion of the vehicle model over a road; generating command signals to the test rig based on the vehicle model and the predicted motion as at least one set of velocity, displacement and load control signals; applying velocity, forces and displacements to the tire with the test rig in accordance with the command signals; measuring at least one of complementary displacements and loads of the tire at the test rig; and providing the measured complementary displacements and loads to the vehicle model. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
Specification