METHOD FOR DETERMINING A PIVOTING ANGLE OF A WHEEL UNIT MOUNTED ONTO A SNAP-IN INFLATION VALVE
First Claim
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1. A method for determining a pivoting angle (α
- ) of a wheel unit (12) mounted onto a snap-in inflation valve (10), said valve being placed on a wheel of a motor vehicle, said method including the following phases;
Phase 1;
observation of a curve C representing the effect of gravity on the radial acceleration Ames of a wheel of the vehicle on a sensing axis Y′
which is related to the wheel unit and is not parallel to the axis of rotation of the wheel, by spectrum analysis of the gravity curve at a sampling frequency Fs greater than an assumed rotation speed ω
of the wheel,Phase 2;
deduction of an actual rotation speed ω
of the wheel, andPhase 3;
determination of the pivoting angle α
according to the formula
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Abstract
A method for determining a pivoting angle (α) of a wheel unit (12) mounted onto a snap-in inflation valve (10) includes the following three phases:
- observation of a curve representing the effect of gravity on the radial acceleration Ames of a wheel of the vehicle on a sensing axis Y′ which is related to the wheel unit and is not parallel to the axis of rotation of the wheel, by spectrum analysis of the gravity curve at a sampling frequency Fs greater than an assumed rotation speed ω of the wheel,
- deduction of the actual rotation speed ω of the wheel, and
- determination of the pivoting angle α according to the formula
where ω is the actual angular speed deduced from the observation of the curve,
-
Citations
13 Claims
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1. A method for determining a pivoting angle (α
- ) of a wheel unit (12) mounted onto a snap-in inflation valve (10), said valve being placed on a wheel of a motor vehicle, said method including the following phases;
Phase 1; observation of a curve C representing the effect of gravity on the radial acceleration Ames of a wheel of the vehicle on a sensing axis Y′
which is related to the wheel unit and is not parallel to the axis of rotation of the wheel, by spectrum analysis of the gravity curve at a sampling frequency Fs greater than an assumed rotation speed ω
of the wheel,Phase 2; deduction of an actual rotation speed ω
of the wheel, andPhase 3; determination of the pivoting angle α
according to the formula - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- ) of a wheel unit (12) mounted onto a snap-in inflation valve (10), said valve being placed on a wheel of a motor vehicle, said method including the following phases;
Specification