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Vol. 162, Issue 1, January 2014, pp. 167-172




The Algorithm on Displacement Differences Calculation and the Error
of Surface Displacement Measuring Device

1, 2 Ping GAN, 2 Guowen HU, 2 Zhenzhen LI, 2 Zhuo CHEN, 2 Xiao CHENG, 3 He HUANG, 3 Xiaosong ZHANG

1 State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, China
2 College of Communication Engineering, Chongqing University, Chongqing, China
3 Chongqing Communications Research and Design Institute, Chongqing, China
Tel.: +8615023036297, fax: +86-02365103050

E-mail: vigor_gp@163.com


Received: 23 October 2013 /Accepted: 9 January 2014 /Published: 31 January 2014

Digital Sensors and Sensor Sysstems


Abstract: Angle sensor is the core component in the surface displacement measuring device, whose manufacturing process, fixing position and internal device performance can affect the testing accuracy in many aspects. This paper would present a new displacement calculation based on coordinating transformation and employ particle swarm method to calibrate the data. Experimental results show that the amended data through this method is quite close to standard test bench data, indicating that the proposed displacement differences calculation and error correction algorithm can effectively eliminate the fixed bias of surface displacement measuring.


Keywords: Angle sensor, Coordinator transformation, Error correction, PSO algorithm.


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