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A basic study of a manipulator hand-eye system with a parallel operation is presented. The system is composed of a manipulator with five degrees of freedom and a visual device called a laser tracker. The manipulator is installed with strain gauges on the fingers and the wrist part as a tactile sensor and a force sensor respectively to carry out various flexible tasks by using the information furnished through them. Because the laser tracker, consisting of a He-Ne gas laser, a flying spot scanner and a two dimensional measuring device, is capable of obtaining three dimensional coordinates of a laser spot on the surface of an object, it is possible to get, at high speed, information for the manipulation, such as the three dimensional position, form and size of an object. The hand and eye of the system are controlled separately by two computers with high speed mutual data communication, for parallel operation. As an example of simple experiment on the parallel operation, a task of stacking blocks by means of visual feedback is described