Tire cornering stiffness estimation system and method

Patent metadata

Field	Value
Publication number	US-9739689-B2
Application number	US-201414549845-A
Country	US
Kind code	B2
Filing date	Nov 21, 2014
Priority date	Nov 21, 2014
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

A tire cornering stiffness estimation system and method includes multiple tire-affixed sensors mounted to a supportive vehicle tire for operably measuring tire-specific parameters and generating tire-specific information relating tire pressure, temperature, wear state, tire identification and tire loading. One or more accelerometer(s) are mounted to the hub supporting the tire to generate a hub accelerometer signal. A model-based tire cornering stiffness estimator is included to generate a model-derived tire cornering stiffness estimation based upon the hub accelerometer signal adapted by the tire-specific information.

First claim

What is claimed is:

1. A tire cornering stiffness estimation system comprising:
a vehicle supported by at least one vehicle tire mounted to a hub, the vehicle tire having a tire cavity and a ground-engaging tread, and the tire having a plurality of tire-specific measureable parameters, the tire-specific measureable parameters including a load estimation for the one vehicle tire, a temperature of the one vehicle tire, an air pressure within a cavity of the one vehicle tire, and a tire identification identifying the one vehicle tire;
a plurality of tire-affixed sensors mounted to the tire operably measuring the tire-specific measureable parameters to generate tire-specific information;
at least one accelerometer mounted to the hub and generating a hub accelerometer signal to provide a wear estimation for the ground-engaging tread of the one vehicle tire;
a tire cornering stiffness estimator employing a model operable to generate a tire cornering stiffness estimation based upon the hub accelerometer signal and adapted by the tire-specific information.

2. The cornering stiffness estimation system of claim 1 , wherein the tire cornering stiffness estimator operably conducts a frequency domain spectral analysis of the hub accelerometer signal.

3. The cornering system estimation of claim 1 , wherein the hub accelerometer signal is provided to the tire cornering stiffness estimator from a vehicle CAN-bus.

4. A tire cornering stiffness estimation system comprising:
a vehicle supported by at least one vehicle tire mounted to a hub, the vehicle tire having a tire cavity and a ground-engaging tread, and the tire having a plurality of tire-specific measureable parameters, the tire-specific measureable parameters including a load estimation for the one vehicle tire, a temperature of the one vehicle tire, an air pressure within a cavity of the one vehicle tire, and a tire identification identifying the one vehicle tire;
a plurality of tire-affixed sensors mounted to the tire operably measuring the tire-specific measureable parameters to generate tire-specific information;
at least one accelerometer mounted to the hub and generating a vehicle CAN-bus hub accelerometer signal to provide a wear estimation for the ground-engaging tread of the one vehicle tire;
a tire cornering stiffness estimator employing a model operable to generate a tire cornering stiffness estimation based upon the vehicle CAN-bus hub accelerometer signal and adapted by the tire-specific information.

5. The cornering stiffness estimation system of claim 4 , wherein the tire cornering stiffness estimator operably conducts a frequency domain spectral analysis of the vehicle CAN-bus hub accelerometer signal.

6. A method of estimating tire cornering stiffness comprising:
equipping a vehicle with at least one vehicle tire mounted to a hub, the vehicle tire having a tire cavity and a ground-engaging tread, and the tire having a plurality of tire-specific measureable parameters, the tire-specific measureable parameters including a load estimation for the one vehicle tire, a temperature of the one vehicle tire, an air pressure within a cavity of the one vehicle tire, and a tire identification identifying the one vehicle tire;
affixing a plurality of tire-based sensors to the tire to operably measure the tire-specific measureable parameters and thereby generate tire-specific information;
mounting at least one accelerometer to the hub to operably generate a hub accelerometer signal to provide a wear estimation for the ground-engaging tread of the one vehicle tire;
generating from a tire cornering stiffness estimator employing a model a tire cornering stiffness estimation based upon the hub accelerometer signal and adapted by the tire-specific information.

7. The method of claim 6 , further comprising conducting a frequency domain spectral analysis of the hub accelerometer signal by the tire cornering stiffness estimator.

8. The method of claim 7 , wherein further comprising obtaining the hub accelerometer signal from a vehicle CAN-bus.

Assignees

• Goodyear Tire & Rubber

Inventors

• Singh Kanwar Bharat

Classifications

• B60T8/1725

  Using tyre sensors, e.g. Sidewall Torsion sensors [SWT] (for tyre pressure and temperature detection B60C23/00) · CPC title

• B60C99/00

  Subject matter not provided for in other groups of this subclass · CPC title

• G01M17/02 Primary

  Tyres · CPC title

• G01N3/56

  Investigating resistance to wear or abrasion · CPC title

• B60T8/00

  Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force (by changing number of effective brake cylinders in power brake systems B60T17/10) · CPC title