Abstract
One of the most outstanding features of synchronous belt drives is their ability to transmit rotation accurately. However, when synchronous belt drives are operated at high speeds, a transmission error occurs due to the inertial force of the pulley and the shaft, and belt vibration. This study investigates experimentally transmission errors in synchronous belts with regard to the influence of pulley speed under dynamic conditions. The results of our experiments show that the magnitude of transmission errors with a period of one rotation of both the belt and pulley does not affect the pulley speed. In addition, the transmission error per single pitch of the pulley increases markedly when the belt span causes a resonance of the meshing frequency and a transverse vibration natural frequency. In the study, we also determine a method to estimate this transmission error resulting from the resonance of string vibration.
