METHOD AND APPARATUS FOR DETERMINING THE INCLINATION OF A MOVING VEHICLE WITH RESPECT TO THE ROAD AND FOR PERFORMING DYNAMIC HEADLIGHT LEVELING

摘要

A method and system for determining the inclination of the suspended portion of a moving vehicle with respect to the road from a 2 axis or 3 axis accelerometer, inclinometer, or the like, for use in controlling a system or device that is dependent upon inclination. The method and system provide for the determination of the angle of inclination of the portion of the vehicle which is suspended with respect to the portion of the vehicle which is not suspended. The angle of inclination is derived from the dependence of acceleration along the axis normal to the vehicle (z axis) due to longitudinal (x axis) and/or latitudinal (y axis) accelerations of the vehicle.

主权项

1. A method for controlling an electromechanical system based on the inclination of a suspended portion of a vehicle with respect to a road comprising:
obtaining first and second signals representative of z axis and x axis acceleration, respectively, from at least one sensor coupled to the suspended portion of the vehicle; filtering the first and second signals to attenuate high frequency components of acceleration to produce filtered first and second signals; calculating a slope corresponding to a least squares best fit linear regression using the filtered first and second signals; generating an indication of inclination of the suspended portion of the vehicle (0) by calculating the arctangent of the slope determined in the calculating step; generating at least one control signal based upon the indication of inclination of the suspended portion of the vehicle; and providing the at least one control signal to the electromechanical system.