A new method of velocity estimation based on variable temporal basis using incremental encoder

摘要

This paper deals with analysis and synthesis of algorthms for digital conditioning of signals generated by incremental encoders to estimate velocity of rotating devices for control purposes. Main objectives are to obtain high accuracy at low and high velocity and low tracking delays during accelerations. A digital conditioning method is described, which uses a polynomial of order n whose coefficients are updated so as to fit the n+1 most recent velocity data acquired on a variable temporal basis. Digital simulations and experimental findings are shown with the aim to validate the proposed estimation method and compare it with other methods.