Patent ID: 9097606
Filing Date: 2015-08-04
Classification: G01M

Abstract:
1. An imbalance correction method for correcting imbalance of a rotator, the method comprising: measuring a vibration state of the rotator before a provisional correction and a vibration state of the rotator after the provisional correction at multiple rotation speeds within a range of determination rotation speeds; calculating, from vibration vectors at the respective rotation speeds, a range of set of terminal points of correction vectors for obtaining a vibration value satisfying a vibration standards for each rotation speed; selecting a definite correction vector from the correction vectors having terminal points in an area where the respective ranges of the sets calculated for the respective rotation speeds overlap with each other among the correction vectors; setting a definite correction amount and a definite correction phase based on the definite correction vector; and correcting the imbalance of the rotator based on the definite correction amount and the definite correction phase.