Continuous 3D scanning mode using servomotors instead of stepping motors in dynamic laser triangulation

Abstract

A novel principle of dynamic triangulation with a laser scanner was developed at the institute of engineering UABC. This coordinate measurement method uses stepping motors for positioning a laser in a defined field of view. The present paper describes the substitution of these stepping motors with robust controlled servomotors in open- and closed-loop configuration. This approach converts the discontinuous (i.e. discrete steps) scanning method into a continuous one, to eliminate dead zones in the field of view and to accelerate the step response of the laser scanner.