TRACER WITH THREE-COORDINATE TRACKING SYSTEM FOR CONTROL OF MEASUREMENTS Russian patent published in 1994 - IPC

FIELD: measurement technology. SUBSTANCE: tracer has housing 1 affixed to a machine bed with a liquid damping chamber and hollow rod 2 at the outer end of which contacts 3,4 are attached to. The contacts are coupled with position sensors 5,6 along x and y-axes. At the other end within rod 2 pin 8 axially movable with the aid of ball bushing 7 is disposed, pin 8 being coupled with contact 9 of sensor 10 through weight regulating mechanism 23,24,25. Measurement accuracy is enhanced due to regulating rigidity of a damping member composed of split supports 11,12,15,17,18, balls 13 and 19 and strings. The movement of contacts 9,32,33 causes formation of linearly varying output voltage within the range of linear displacements of sensors 5,6,10. Movement direction can be determined with the aid phase demodulation of the output voltage relative to a voltage of winding. To electromechanical transmission position, velocity and current feedback is applied. EFFECT: enhanced measurement accuracy. 3 dwg