Next Article in Journal
A Time Difference Method for Measurement of Phase Shift between Distributed Feedback Laser Diode (DFB-LD) Output Wavelength and Intensity
Next Article in Special Issue
Magnetic Sensors Based on Amorphous Ferromagnetic Materials: A Review
Previous Article in Journal
SNR Wall Effect Alleviation by Generalized Detector Employed in Cognitive Radio Networks
Previous Article in Special Issue
A 3-Axis Miniature Magnetic Sensor Based on a Planar Fluxgate Magnetometer with an Orthogonal Fluxguide
Article Menu

Export Article

Open AccessArticle
Sensors 2015, 15(7), 16136-16152; doi:10.3390/s150716136

A Novel Permanent Magnetic Angular Acceleration Sensor

1,2
and
1,3,*
1
College of Information Engineering, Zhejiang University of Technology, Hangzhou 310023, China
2
Nanhu College, Jiaxing University, Jiaxing 314001, China
3
College of Automation, Hangzhou Dianzi University, Hangzhou 310018, China
*
Author to whom correspondence should be addressed.
Academic Editor: Andreas Hütten
Received: 8 April 2015 / Revised: 11 June 2015 / Accepted: 29 June 2015 / Published: 3 July 2015
(This article belongs to the Special Issue Magnetic Sensor Device-Part 1)

Abstract

Angular acceleration is an important parameter for status monitoring and fault diagnosis of rotary machinery. Therefore, we developed a novel permanent magnetic angular acceleration sensor, which is without rotation angle limitations and could directly measure the instantaneous angular acceleration of the rotating system. The sensor rotor only needs to be coaxially connected with the rotating system, which enables convenient sensor installation. For the cup structure of the sensor rotor, it has a relatively small rotational inertia. Due to the unique mechanical structure of the sensor, the output signal of the sensor can be directed without a slip ring, which avoids signal weakening effect. In this paper, the operating principle of the sensor is described, and simulated using finite element method. The sensitivity of the sensor is calibrated by torsional pendulum and angle sensor, yielding an experimental result of about 0.88 mV/(rad·s−2). Finally, the angular acceleration of the actual rotating system has been tested, using both a single-phase asynchronous motor and a step motor. Experimental result confirms the operating principle of the sensor and indicates that the sensor has good practicability. View Full-Text
Keywords: sensor; electromagnetic induction; FEM analysis; calibration and testing sensor; electromagnetic induction; FEM analysis; calibration and testing
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Zhao, H.; Feng, H. A Novel Permanent Magnetic Angular Acceleration Sensor. Sensors 2015, 15, 16136-16152.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top