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US 2017/0363515 A1Published application
Methods and apparatus for assessing tire health through monitoring effective tire rolling radius
AssigneesFord Global Technologies, LLC, The Regents of the University of Michigan
InventorsTomas Poloni, Jianbo Lu
Life of this patent
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Abstract
Methods and apparatus for assessing tire health through monitoring an effective tire rolling radius are disclosed. An example method includes obtaining velocity data for a vehicle from a global positioning system, obtaining angular speed data for a wheel of the vehicle, processing the velocity data and the angular speed data using a digital filter, and determining an effective rolling radius of a tire coupled to the wheel based on the processed velocity data and angular speed data.
Claims24
A method comprising:
- obtaining velocity data for a vehicle from a global positioning system;
- obtaining angular speed data for a wheel of the vehicle;
- processing the velocity data and the angular speed data using a digital filter;
- determining an effective rolling radius of a tire coupled to the wheel based on the processed velocity data and angular speed data;
- and
- determining an unloaded radius of the tire based on the effective rolling radius.
3 more elements
An apparatus comprising:
- a global positioning system module;
- a wheel speed sensor;
- and
- a processor to:
- obtain velocity data for a vehicle from the global positioning system module;
- obtain angular speed data for a wheel of the vehicle from the wheel speed sensor;
- process the velocity data and the angular speed data using a linear estimation filter;
- determine an effective rolling radius based on the processed velocity data and angular speed data;
- and
- determine an unloaded radius of a tire of the wheel based on the effective rolling radius.
7 more elements
A method comprising:
- determining an effective rolling radius of a tire;
- and
- determining an unloaded radius of the tire based on the effective rolling radius.
Dependencies are inferred from the claim text.