| 摘要 |
Apparatus 1 for determining the ride height dimension H of a vehicle between a first reference point A fixed relative to the vehicle and a second reference point B fixed relative to the ground comprises apparatus 1 for determining spherical co-ordinates A ra, thetaa, phia and Brb, thetab, phib which define the locations of the first and second reference points A and B, respectively, in three-dimensional space relative to a datum point 10. The apparatus determines Cartesian co-ordinates Axa, ya, za and Bxb, yb, zb from the corresponding spherical co-ordinates, and where the ride height dimension is a vertical dimension between the first and second reference points A and B, the ride height dimension is computed by subtracting the vertical Cartesian co-ordinate za of the first reference point A, thus producing the ride height dimension from the formula : ride height H = za - zb H = racosphia - rbcosphib. |
