Measuring and testing – Tire – tread or roadway
Reexamination Certificate
2005-08-02
2005-08-02
Cygan, Micheal (Department: 2855)
Measuring and testing
Tire, tread or roadway
Reexamination Certificate
active
06923050
ABSTRACT:
An automatic control method is provided for a phenomenon in which a parameter Y varies as a function of a parameter X according to a course exhibiting a rise, an extremum and a fall, in which the value of the parameter X is automatically controlled to maintain the value of a parameter Y at an optimum value, including the following steps. Estimations or measurements (Xi, Yi) are determined for at least one pair of values in a coordinate system having an origin. Corresponding values are determined for the slope αiof the straight line passing through the origin and through (Xi, Yi). Coefficients Apare calculated by direct calculation or by a regression from a sufficient number of pairs with (αi, Xi) so as to model a variation curve αi=f(Xi, Ap). A target value XTargetis calculated by using a predetermined Invariant “Invt”. In addition, applications relating to the testing and the functioning of the tires on a vehicle are provided, for example for controlling the grip on braking, with Y being the coefficient of friction and X being the slip of the tire under torque.
REFERENCES:
patent: 3980346 (1976-09-01), Leiber
patent: 4794538 (1988-12-01), Cao et al.
patent: 5343918 (1994-09-01), Fontaine
patent: 5402345 (1995-03-01), Kost
patent: 5513907 (1996-05-01), Kiencke et al.
patent: 5816666 (1998-10-01), Wiss
patent: 6092415 (2000-07-01), Borenius et al.
patent: 6285280 (2001-09-01), Wang
patent: 6550320 (2003-04-01), Giustino
patent: 2004/0225423 (2004-11-01), Carlson et al.
patent: 4218034 (1993-12-01), None
patent: 9205986 (1992-04-01), None
patent: 0176925 (2001-10-01), None
patent: 0187647 (2001-11-01), None
Grosch, K. A. Kautschuk und Gummi Kunststoffe Jun. 1996 v49 n 6 p432-441.
Yamazaki Shun'ichi The Determination of Tire Parameter for Real Time Estimation of Tire and Road Friction 1997 Jpn. Automob. Res. Inst. Inc p165-168.
Sakai Tomotsugu, Investigation of Lambourne Wear Test Conditions to Evaluate Tire Wear Life, Toyota Motor Corp., proceedings of the International Sessions JSME Spring annual meetig, 1996 vol. 73 p. 33-34.
Fangeat Nicolas
Levy Georges
Allen Andre
Cygan Micheal
Michelin & Recherche et Technique S.A.
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