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)

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.

2. The method of claim 1 , wherein the sensors are MEMS angular rate sensors (MEMS gyroscopes).

3. The method of claim 1 , wherein the reference surface is mounted on a rolling trolley.

4. The method of claim 3 , wherein an angle of the reference surface inclination is constantly measured by a set of inclinometers and/or accelerometers-thus correcting the initial angle value used in calculations of the wheel alignment.

5. The method of claim 1 , having at least four sensors, the method performing a four wheel alignment, wherein a relative angular orientation of each wheels of the vehicle is measured and adjusted.

6. A vehicle wheel alignment adjustment system, comprising:

a set of gyroscopic wheel sensors, each sensor measures an angle changes at least two orthogonal planes;

a reference plane designed as a precision surface with special mounting sites with a known orientation relative to the reference plane to which the sensors are mounted;

wherein the reference plane is not connected to the vehicle; initial angles are recorded when sensors placed on the mounting sites;

the sensors perform measurement of wheel angles when the sensors are placed on wheels; measured angles indicate an angle value difference from the initial angles values of the reference plane; the measured angles data is transmitted to a computer;

the computer executes a data processing algorithm resulting in a wheel alignment data displayed on a display;

the alignment includes a relative angular orientation of at least two wheels.

7. The system of claim 6 , wherein the display is configured to show an alignment change when a wheel angle is changed thus facilitating the alignment adjustment.

8. The system of claim 6 , wherein the data transmission is wireless.

9. The system of claim 6 , wherein the reference plane is mounted on a rolling trolley.

10. The system of claim 9 , wherein an angle of the reference plane inclination is constantly measured thus correcting the initial angle value used in calculations of the wheel alignment.

11. The system of claim 6 , wherein an angle of the reference surface inclination is measured by a set of inclinometers and/or accelerometers.

12. The system of claim 6 having four sensors, the system performing measurement and alignment adjustment for all four wheels.