Research on the influence of installation error of capacitive angle sensor on angle error

Abstract

This paper discusses the effect of mechanical installation errors on the c results of capacitive angle sensor by COMSOL Multiphysics software; the angle was calculated using sines and cosines with capacitance value of the capacitive angle sensor. First, based on the principle of the sensor structure, the formula is derived which is petal-shaped in polar coordinates, and set the electrical parameters and rotation angles to realize the model simulation. Secondly, due to the installation errors which are easy to occur in real life, the simulation results are obtained by tilting and moving the model body to imitating the installation error in different cases. Finally, the results of installation errors in different initial situations are further analyzed and compared, including different tilt angles and horizontal movement distances respectively, and summarizing the impact of different installation errors on the measurement results.