Analyzing Rotor Rotating Error by Using Fractal Theory

摘要

Based on the judgement of fractional Brownian motion, this paper analyzes the radial rotating error of a precision rotor. The results indicate that the rotating error motion of the precision rotor is characterised by basic fractional Brownian motions, i. e. randomicity, non-sequencity,- and self-simulation insinuation to some extent. Also, this paper calculates the fractal box counting dimension of radial rotating error and judges that the rotor error motion is of stability, indicating that the motion range of the future track of the axes is relatively stable.