Angle Error Evaluation of Vernier Pattern Angle Sensor with Discrete Fourier Transform

Abstract

This paper presents a new approach to error reduction for Vernier pattern angle sensor, which can become smaller and realize high solutions. The frequency components were investigated by performing discrete Fourier transform on the angle errors of a Vernier pattern angle sensor with respect to rotation speed. Three error equations were calculated from the obtained output voltage, which included noise, given as the error. The frequency components of the error distribution and the error equations were compared, and the frequency components given errors in case with 32(32X) and 31(31X) were discussed.