Title: Research on the temperature influence and compensation technique in a magneto-elastic cable tension sensor

Authors: Dedong Tang; Hongjun Zhu; Julan Mou; Mingfang Wu

Addresses: College of Electrical and Information Engineering, Chongqing University of Science and Technology, Chongqing 401331, China ' College of Electrical and Information Engineering, Chongqing University of Science and Technology, Chongqing 401331, China ' Department of Experimental Equipment, Chongqing University of Science and Technology, Chongqing 401331, China ' College of Electrical and Information Engineering, Chongqing University of Science and Technology, Chongqing 401331, China

Abstract: The magneto-elastic cable tension sensor has numerous advantages. For example, it is the ideal method for measuring the cable tension in a large span cable-bridge; however, the sensor is also temperature-sensitive, and as such, the temperature influence on the sensor is a significant factor. In this paper, the principle of cable tension sensor based on magnetic-elastic effect is introduced. And, the theory of temperature influence magneto-elastic material is thoroughly analysed. On the basis of Jiles-Atherton model, which introduced the Curie temperature as an additional parameter, a magnetic-thermo coupling model for the magnet elastic cable tension sensor is constructed. By analysing temperature and the physical parameters of the model, a novel method of compensating for the temperature by adjusting the bias magnetic field is proposed. Theoretical analysis experimental work indicate that the model is a practical means of compensating for temperature influence.

Keywords: magneto-elastic effect; temperature influence; temperature compensation; cable tension sensors; large-span cable bridges; magnetic-thermo coupling models.

DOI: 10.1504/IJSNET.2014.067097

International Journal of Sensor Networks, 2014 Vol.16 No.4, pp.236 - 243

Received: 12 Apr 2014
Accepted: 30 Jun 2014
Published online: 26 Jan 2015 *

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