Multi-sensors measurement and new equally dividing principle

Principle of averaging-error effect can partly eliminate the division errors, the more sensors are used, the higher accuracy will be gained, but in some cases, it is not always right. In this paper, equally dividing the special route circle was studied and some results were obtained: the number of sensors equals to the number of divisions, the equally dividing and positioning accuracy will be the highest, error is zero in theory. It is different from the theory of averaging-error effect. Based on the dividing circle research, the new principle of equally dividing and positioning on a closed route was proposed and proof was given. In addition, characters of the new principle were discussed. For example, the measuring objects (such as reticles on the index table or the grating ) do not need to equally set along the route, which is different from the traditional technology.