Effects of Rider's Vibration Characteristics on Weave Mode of Two-Wheeled Vehicle

Abstract

This study analyzes the mechanism how a rider's vibration caracteristics affect the weave mode of two-wheeled vehicle using the Energy Flow Method, that calculates energy flow of external forces in each motion. Weave mode is stabilized when a rider's vibration characteristics are considered. The external force generated by a rider's upper body acceleration stabilizes rolling motion. Stabilization of rolling motion advances the phase of front tire side force via external force generated by rolling acceleration in the steering motion. This phase lead stabilizes lateral motion by external force generated by yaw rate. Finally weave mode is stabilized. Changing parameter concerning a ride's vibration characteristics affects weave mode stability, and we can also clarify its effect mechanism using the Energy Flow Method.