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摘要
A displacement sensor using magnetostrictive wire is a sensor which estimates the displacement from propagation time of an elastic wave that is caused and detected by using the magnetostrictive effect. This sensor can be used for measurement up to 60 m in simple structure, therefore it is appropriate for industrial applications. This paper describes the followings; In case of unipolar pulse current used until now, 1.3 mm hysteresis error is produced. Then, new methods for reducing the hysteresis error were examined. The bipolar pulse current was used instead of the unipolar pulse current. As the result, it was found that the hysteresis error could be decreased to 0.3 mm or less.
- 出版日期2007-3
- 单位太原理工大学
