The study shows that shortening the span length can effectively reduce the transverse vibration amplitude of synchronous belt and can avoid possible resonance region of synchronous belt.

• 结果表明，减小同步带跨度既可以有效减小同步带运动过程中横向振动幅度，又可以使同步带运动有效避开正时传动机构可能的共振区。