MOVABLE MEASURING DEVICES OF ACTUATOR, METHOD OF MANUFACTURING THE SAME, AND MEASURING METHOD USING THE SAME

摘要

A device for measuring movement of an actuator is disclosed. The present invention comprise: an actuator rod; taps installed at the top of the actuator rod and formed by plating a metal thin film; a sensor positioned at the top of the actuator rod and the taps and measuring voltage and a number of flux interlinkage; and a permanent magnet positioned at the top of the sensor and providing magnetic force. The device is capable of reducing production costs and a time and remarkably improving measurement accuracy.