ROAD SURFACE FRICTION COEFFICIENT ESTIMATING DEVICE

PROBLEM TO BE SOLVED: To stably estimate a more precise road surface friction coefficient in a road surface coefficient estimating device for estimating the friction coefficient between a road surface and a tire by a wheel speed of a vehicle. SOLUTION: A relationship between acceleration and a slip...

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Bibliographische Detailangaben
1. Verfasser:	TSUTSUMI JUNJI
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PERFORMING OPERATIONS PHYSICS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES TESTING TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To stably estimate a more precise road surface friction coefficient in a road surface coefficient estimating device for estimating the friction coefficient between a road surface and a tire by a wheel speed of a vehicle. SOLUTION: A relationship between acceleration and a slip ratio of a tire of the vehicle is corrected, and a regression coefficient of the vehicle acceleration and the slip ratio is calculated on the basis of the corrected vehicle acceleration and slip ratio. The regression coefficient is compared with a preset regression coefficient threshold, so as to estimate the road surface friction coefficient. COPYRIGHT: (C)2005,JPO&NCIPI