State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China.
Sensors (Basel). 2012 Oct 15;12(10):13829-41. doi: 10.3390/s121013829.
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.
精密位移传感器是精密工程中的一个重要课题。目前，这种类型的传感器通常只有单一的平移或旋转测量功能，并且与主机设备的集成也不方便。在本报告中，我们提出了一种利用磁致伸缩和压电效应的组合效应来实现平移和旋转测量的新型传感器。作为概念验证，我们通过实验实现了一种非接触式的平移-旋转精密传感器原型。在当前的研究阶段，通过理论和实验研究，证明了这种非接触式位移传感器在粗测和精测中都可以实现平移和旋转的测量。此外，由于其结构紧凑、刚性好且组件较少，因此可以很容易地嵌入到主机设备中。
