The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2018
Filed:
Jun. 09, 2016
Volvo Car Corporation, Gothenburg, SE;
Mats Jonasson, Partille, SE;
Tony Gustafsson, Askim, SE;
Anton Albinsson, Gothenburg, SE;
Frederik Hans Bruzelius, Molndal, SE;
VOLVO CAR CORPORATION, , SE;
Abstract
The present disclosure relates to a method and arrangement for estimating a friction coefficient (μ) between tires of a wheeled two-axis two-track road vehicle and the ground. If the longitudinal velocity νof the vehicle is above a first threshold νand the wheel angle δand/or the yaw rate Ωare/is below a second threshold δ/Ω, a positive torque is applied to both wheels on a first axle and an and opposite, negative torque, to both wheels on a second axle while following driver requested longitudinal vehicle acceleration (a). Wheel speeds ωare measured and tire forces (f) estimated. The friction coefficient (μ) between the tires and the ground are estimated from the measured wheel speeds ωand the estimated tire forces (f). The estimated friction coefficient (μ) is made available to other vehicle systems.