Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Indication or control of braking – acceleration – or deceleration
Reexamination Certificate
2006-06-27
2006-06-27
Beaulieu, Yonel (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Indication or control of braking, acceleration, or deceleration
C701S073000, C303S148000, C303S149000
Reexamination Certificate
active
07069135
ABSTRACT:
A method for estimation of the maximum grip coefficient on the basis of knowledge of the forces and the self-alignment torque which are generated in the contact area of a tire, includes the steps of:selecting a plurality of fixed points in space, which lie at different azimuths along the circumference in at least one sidewall of the tire,carrying out a corresponding number of measurements of circumferential distance variation (extension or contraction) at these fixed points when the tire is rolling on the road,processing the measurement signals so as to extract the three components of a resultant of forces which are exerted by the road on the contact area of a tire and the self-alignment torque generated by the tire from them,processing the evaluation signals of the three components of a resultant of forces which are exerted by the road on the contact area of a tire and of the self-alignment torque generated by the tire so as to extract the said grip coefficient μ from them.
REFERENCES:
patent: 5964265 (1999-10-01), Becherer
patent: 6550320 (2003-04-01), Giustino
patent: 6597980 (2003-07-01), Kogure
patent: 3939917 (1991-06-01), None
patent: 0 0937 615 (1999-08-01), None
U.S. Patent Application 2002 011093 of Matsuno, published Jan. 2002.
Beaulieu Yonel
Fitzpatrick ,Cella, Harper & Scinto
Michelin Recherche Et Technique S.A.
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