Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10409424 | Sensors and Actuators A: Physical | 2005 | 6 Pages |
Abstract
Magnetic shape memory (MSM) materials provide a new way to produce motion and force. The material has also another interesting property: it is possible to monitor its shape by measuring its magnetic parameters. Based on this property, sensors and power generators can be made from the material. In this paper a new method for position sensing using MSM material is introduced and demonstrated. The size of an MSM element is changed in the air-gap of an inductor and the inductor's inductance is measured to see its dependence on the strain of the material. The physical background of the achieved signal is explained and a simple analytical formula for calculating the inductance as a function of the position is proposed. The calculated results are compared with the measured ones.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
I. Suorsa, E. Pagounis, K. Ullakko,