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Sensors (Basel). 2017 Mar 17;17(3). pii: E610. doi: 10.3390/s17030610.

An EM Induction Hi-Speed Rotation Angular Rate Sensor.

Li K1,2, Li Y3, Han Y4,5.

Author information

1
Institute of Information Sensing and Processing Technology, North University of China, Taiyuan 030051, China. likai@nuc.edu.cn.
2
School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. likai@nuc.edu.cn.
3
School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. liyuan82@nuc.edu.cn.
4
Institute of Information Sensing and Processing Technology, North University of China, Taiyuan 030051, China. hanyan@nuc.edu.cn.
5
School of Information and Communication Engineering, North University of China, Taiyuan 030051, China. hanyan@nuc.edu.cn.

Abstract

A hi-speed rotation angular rate sensor based on an electromagnetic induction signal is proposed to provide a possibility of wide range measurement of high angular rates. An angular rate sensor is designed that works on the principle of electromagnetism (EM) induction. In addition to a zero-phase detection technique, this sensor uses the feedback principle of magnetic induction coils in response to a rotating magnetic field. It solves the challenge of designing an angular rate sensor that is suitable for both low and high rotating rates. The sensor was examined for angular rate measurement accuracy in simulation tests using a rotary table. The results show that it is capable of measuring angular rates ranging from 1 rps to 100 rps, with an error within 1.8‰ of the full scale (FS). The proposed sensor is suitable to measurement applications where the rotation angular rate is widely varied, and it contributes to design technology advancements of real-time sensors measuring angular acceleration, angular rate, and angular displacement of hi-speed rotary objects.

KEYWORDS:

EM induction; angular rate; high rotational speed; sensor

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