INDIRECT TIRE WEAR STATE ESTIMATION SYSTEM
First Claim
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1. A tire wear state estimation system comprising:
- a tire supported by a wheel and supporting a vehicle;
a vehicle-based sensor for measuring wheel speed of the wheel supporting the tire and generating a wheel speed signal;
a feature-extracting processor for extracting from the wheel speed signal a first extracted feature;
a feature-extracting processor for extracting from the wheel speed signal a second extracted feature;
a data classifier receiving as data inputs first extracted feature data and second extracted feature data;
the data classifier operable to conduct a classification of the first extraction feature data relative to the second extraction feature data to estimate a wear state for the tire.
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Abstract
A tire wear state estimation system includes a vehicle-based sensor for measuring wheel speed of a tire-supporting and first and second features extracted from the wheel speed signal. A data classifier conducts a classification of the first extraction feature data relative to the second extraction feature data by a statistical analysis of the wheel speed signal to estimate the wear state of the tire.
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Citations
12 Claims
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1. A tire wear state estimation system comprising:
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a tire supported by a wheel and supporting a vehicle; a vehicle-based sensor for measuring wheel speed of the wheel supporting the tire and generating a wheel speed signal; a feature-extracting processor for extracting from the wheel speed signal a first extracted feature; a feature-extracting processor for extracting from the wheel speed signal a second extracted feature; a data classifier receiving as data inputs first extracted feature data and second extracted feature data;
the data classifier operable to conduct a classification of the first extraction feature data relative to the second extraction feature data to estimate a wear state for the tire. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tire wear state estimation system comprising:
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a tire supported by a wheel and supporting a vehicle; a vehicle-based sensor for measuring wheel speed of the wheel supporting the tire and generating a wheel speed signal; a feature-extracting processor for extracting from the wheel speed signal a first extracted feature, the first extracted feature quantitatively changing responsive to a wear level change of the tire; a feature-extracting processor for extracting from the wheel speed signal a second extracted feature, the second extracted feature quantitatively changing responsive to a wear level change of the tire; a data classifier receiving as inputs first extracted feature data and second extracted feature data;
the data classifier operable to conduct a classification of the first extraction feature data relative to the second extraction feature data;a wear state estimator operable to estimate a wear state for the tire based upon the classification of the first extraction feature data relative to the second extraction feature data. - View Dependent Claims (9, 10, 11, 12)
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Specification