Abstract
A strain wave gearing is a kind of K-H-V type planetary gears. It has features of lightweight and high reduction ratio. This paper deals with the relationship between the radiated noise of strain wave gearing and the vibration of F/S. The magnitude of sound power is expected to become large in proportion to the square of the amplitude of displacement of F/S. The displacement is calculated using FEM and measured. The sound power is also measured using the F/S fixed type apparatus. It is confirmed that the relation between them are agreed well to the theory and the reason of noise is caused by the vaibration fo the F/S.
