Method and system for determining vehicle wheel alignment based on the application of systems using gyroscopic sensors and/or MEMS angular rate sensors (MEMS gyroscopes)

摘要

The invention relates to a method and system for determining vehicle wheel alignment, and namely, camber angles, total and individual toe and front wheel steering axis caster and tilt angles (caster and kingpin inclination), by measuring changes in wheel sensor angles from a predetermined position. Changes are measured using gyroscopic sensors or MEMS angular rate sensors (MEMS gyroscopes).

主权项

1. A method for determining vehicle wheel alignment, comprising:
placing a set of angle gyroscopic sensors on a reference surface, wherein the reference surface is not connected to a vehicle, and recording an initial angles values; removing the sensors from the reference surface and placing them on wheels of the vehicle; one sensor on each wheel; recording measured angles values from the sensors placed on the wheels; the measured angle showing a difference of the sensor's angle on the wheel compared with the initial angle value for this sensor; and calculating a wheel alignment for at least one axle wheels of the vehicle from mutual position of the wheels sensors and the sensors of the reference surface; calculating a relative angular orientation of the wheels; if needed, adjusting the relative angular wheels orientation to achieve an improved wheels alignment, while continuously checking the relative angular orientation of the wheels using a data from the sensors placed on the wheels.