전동휠체어 웜기어 감속기의 불안정한 베어링 지지반력의 동역학적 해석

The objective of this paper is to present the development of an efficient multi-body model to predict fluctuating reaction forces at supporting bearings. Major noise and vibration in a worm gear reducer system takes place due to the axis misalignment and unsteady motor power supply. In addition, noise and vibration are also related to the torsional deformation of a shaft. The dynamic interactions among input/output shafts with an equivalent stiffness, contacting worm and gear, and bearings, were considered in the flexible multi-body model. and the fluctuating reactive forces on bearings were calculated. The fluctuation force on supporting bearings due to misalignment of axes is a major factor for the noise and vibration of a worm gear reducer.