Patent ID: 6347541
Filing Date: 2002-02-19
Classification: G01P

Abstract:
A method of calibrating an acceleration sensor for a vehicle, the acceleration sensor being connected to an electronic control unit, comprising the steps of:positioning the acceleration sensor at a first angle A1; communicating the first angle A1 to the electronic control unit; measuring a first output voltage V1 of the acceleration sensor at the first angle A1; positioning the acceleration sensor at a second angle A2; communicating the second angle A2 to the electronic control unit; measuring a second output voltage V2 of the acceleration sensor at the second angle A2; calculating a sensitivity factor as a ratio equal to a difference between the first and second output voltages V2âˆ’V1 divided by a difference between the first and second angles A2âˆ’A1; calculating a zero position output voltage which is equal to the first output voltage minus a product of the sensitivity factor times the sine of the first angle.