Non-Contact Translation-Rotation Sensor Using Combined Effects of Magnetostriction and Piezoelectricity

• Main Authors: Guang Meng, Zhiqiang Feng, Yudong Cao, Qingwei Liu, Ting Zhang, Bintang Yang
• Format: Article
• Language: English
• Published: MDPI AG 2012-10-01
• Series: Sensors
• Subjects: displacement sensor; translation-rotation measurement; magnetostrictive sensor; piezoelectric effect
• Online Access: http://www.mdpi.com/1424-8220/12/10/13829

Precise displacement sensors are an important topic in precision engineering. At present, this type of sensors typically have a single feature of either translation or rotation measurement. They are also inconvenient to integrate with the host devices. In this report we propose a new kind of sensor that enables both translation and rotation measurement by using the combined effect of magnetostriction and piezoelectricity. As a proof of concept, we experimentally realized a prototype of non-contact translation-rotation precise sensor. In the current research stage, through both theoretical and experimental study, the non-contact displacement sensor is shown to be feasible for measuring both translation and rotation either in coarse or fine measurement. Moreover, owing to its compact, rigid structure and fewer components, it can be easily embedded in host equipment.