Method for calibrating a radial-acceleration sensor for the wheel of a motor vehicle

Abstract

A method for calibrating a radial acceleration sensor of a wheel of a vehicle including the following steps: acquisition, by the sensor, of signals S, each signal Sbeing acquired during a predetermined time window Wwhen the vehicle is in motion, the windows Wbeing different from one another; detection, for each time window W, of local extrema of the signal Sassociated respectively with phase values and detection instants; determination, for each time window W, of a frequency Fof the rotation of the wheel of the vehicle as a function of the phase values and of the detection instants for the local extrema detected; low-pass filtering of the signals S, so as to obtain, for each time window W, a filtered value Z; calibration of a constant error Eof the radial acceleration sensor as a function of the filtered values Zand of the frequencies F.