Use of Magnetostatic Waves for Rotation Rate Sensing

使用静磁波进行转速传感

• 批准号: 8414281
• 负责人: Daniel Stancil
• 金额: $ 9.62万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1985
• 资助国家: 美国
• 起止时间: 1985-02-01 至 1986-09-15
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8414281&HistoricalAwards=false
• 关键词: Use; Magnetostatic; Waves; Rotation; Rate

Previous research has demonstrated a new microwave ring resonator based on guided magnetostatic surface waves, which are guided around a closed circular path using a nonuniform in-plane magnetic bias field. This research extends the investigation to examining a rotation rate sensor, or tachometer. In such an application, the transducers remain stationary while the ferrite film supporting the waves is rotated. The rotation rate is determined from the additional phase shift of the waves caused by the motion of the medium. Such a tachometer could, in principle, exhibit a response time as short as several hundred nanoseconds. The ability to make virtually instantaneous rotation rate measurements would contribute to the stability and speed of many control systems used with industrial processes and robotics. The research has both the experimental portion and theoretical studies of magnetostatic waves in moving media.

以前的研究已经证明了一种基于导磁静磁表面波的新型微波环形谐振器，导磁静磁表面波使用非均匀的面内偏置磁场引导绕封闭的圆形路径。这项研究将调查扩展到检查转速传感器或转速表。在这种应用中，当支撑波的铁氧体薄膜旋转时，换能器保持静止。旋转速度是由介质运动引起的波的附加相移确定的。原则上，这种转速计的响应时间可以短至几百纳秒。能够进行几乎瞬时的转速测量将有助于工业过程和机器人所使用的许多控制系统的稳定性和速度。本文对运动介质中的静磁波进行了实验研究和理论研究。