Under the device null high radiation environment which is used for high order accuracy position detection control manner and this manner by the resistance radiation rotary detection device which uses

摘要

PROBLEM TO BE SOLVED: To enable high precision detection of the straight line position of a rectilinear moving object by a stepping motor, even under high radiating environment, and control thereof, by using a radiation-resistant rotation detector using a proximity sensor of simple structure, and by monitoring the pulse control of the stepping motor.;SOLUTION: In a device for rectilinearly moving the moving object 5 via a rectilinear moving mechanism 2 for converting rotation motion of the stepping motor 1 into rectilinear motion, the rotation detector 6 is provided to journal a synchronous rotary shaft 7 connected to a rotary shaft 1a of the stepping motor 1, an impeller 8 is provided in the synchronization rotary shaft 7, a first proximity sensor PX-A and a second proximity sensor PX-B are fixed at positions respectively facing one of the blades 8b in the impeller 8, and the first proximity sensor PX-A and the second proximity sensor PX-B are provided to bring the one sensor to a position semi-facing one of the blades, when the other sensor completely faces the other of the blades.;COPYRIGHT: (C)2006,JPO&NCIPI