ECCENTRICITY CORRECTING DEVICE OF FREQUENCY GENERATOR

摘要

PURPOSE:To enable to correct irrespective of an error of an interval of patterns of a sole frequency generator by electrically obtaining the eccentricity of the generator and constructing to correct it. CONSTITUTION:An output signal from a detector 11 for detecting a rotation output signal from a frequency generator 4 becomes a waveform frequency-modulated by the frequency of the rotating speed if an eccentricity exists in the generator 4. This signal is converted by a frquency/voltage converter 12 into a voltage proportional to the frequency modulation degree. A projection 20 automatically moves the generator 4 in a direction for reducing the eccentricity of the generator 4 by moving a motor 18 toward the generator 4 by a feeder 21 fixed with the motor 18 synchronously with the output signal of the converter 12.