Active Suspension Control of the Elastic Vehicle using Multibody Dynamics

Abstract

This paper proposes a modeling and active suspension control strategies for an elastic vehicle. Vehicles designed with lightweight become flexible and easy to vibrate in nature. Then riding comfort and operating stability of the elastic vehicle are reduced as a result of vibrations and elastic deformations. In order to express vibration and motion of the elastic vehicle stability for control, the Extended Reduced Order Physical Model developed for the flexible multibody dynamics is adapted. For designing the active suspension control system, two kinds of control algorism are used and compared with each other. It is demonstrated through control simulation and experiment that many modes of vibration of a simply scaled body that assume the elastic vehicle are well controlled.