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

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. Copyright © 2014 IFSA Publishing, S. L.