Method and system for estimating the forces and torques generated by the contact of a tire with the road in an instrumented wheel
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United States of America Patent
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Aug 2, 2016
Grant Date -
Dec 19, 2013
app pub date -
Feb 24, 2012
filing date -
Mar 3, 2011
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Abstract
The invention relates to a method for measuring the forces and the moments generated by the tire-road contact from the combination of unit deformation or strain signals measured in different angular and radial positions of the wheel. The angular positions in which the sensors are placed are those permitted by the geometry of the tire. The combination of deformation signals results in six or more signals that are independent of the angular position of the measuring sensors with respect to the tire-road contact point. The effect of temperature and loads that generate deformation signals that do not depend on said angular position of the measuring points, such as centrifugal forces, have been eliminated from the aforementioned signals. Said signals provide estimates of the loads by means of the resolution of two systems of linear equations with constant matrices and three unknowns each.
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