Share Email Print

Proceedings Paper

Fiber Bragg grating sensor for motor transient torque measurement
Author(s): Ping-an Liu; Mingming Huo; Yi Yin; Dongbin Zhang; Wei Yan; Ruizhan Zhai; Yong Wang
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In this work, a novel fiber Bragg grating (FBG) sensor is designed for the measurement of motor axis transient torque. The sensing mechanism of FBG is introduced, the mathematical relationship between applied torque and Bragg wavelength is analyzed, and the theoretical model for a dual-FBG sensing structure is established. The two FBGs with different Bragg wavelengths are symmetrically attached onto the surface of the sensing axis, and used as sensing and reference elements, respectively. The structure can effectively relieve the thermal effect and eliminate environmental perturbation. After the calibration of axial torque with respect to Bragg wavelength by using a torque gauge, the measuring range of the fiber-optic torque sensor is 0~15 Nm, the sensitivity is 90.2 pm/Nm, the linearity is 0.9957, the repeatability error is 3.25 %FS, and the hysteresis error is 2.0 %FS. The torque sensing shaft is connected to the driving shaft of a stepper motor with a flexible coupling, and transient torque is obtained in real time with a frequency response bandwidth of <35 kHz, which is limited only by the readout speed of the interrogation system. This work provides a new technique for transient torque measurement of a motor.

Paper Details

Date Published: 10 May 2019
PDF: 8 pages
Proc. SPIE 11068, Second Symposium on Novel Technology of X-Ray Imaging, 1106826 (10 May 2019); doi: 10.1117/12.2524688
Show Author Affiliations
Ping-an Liu, Qilu Univ. of Technology (China)
Mingming Huo, Qilu Univ. of Technology (China)
Yi Yin, Qilu Univ. of Technology (China)
Dongbin Zhang, Qilu Univ. of Technology (China)
Wei Yan, Qilu Univ. of Technology (China)
Ruizhan Zhai, Qilu Univ. of Technology (China)
Yong Wang, Qilu Univ. of Technology (China)

Published in SPIE Proceedings Vol. 11068:
Second Symposium on Novel Technology of X-Ray Imaging
Yangchao Tian; Tiqiao Xiao; Peng Liu, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?