【摘要】 在已研究的车桥耦合振动动力学模型的基础上,针对简支桥梁模型,将车载对桥梁的耦合作用力看作是外干扰,提出了一种对桥梁的半主动控制模型。根据哈密顿原理推导了控制模型,发现这种模型自身具有状态反馈的特点;针对四分之一车辆与桥梁耦合振动建立的控制模型,经过搭建Simulink仿真,可以看出该模型对于跨中位移以及耦合力作用点位移振幅的削减幅度达80%左右,由此说明了半主动控制模型具有良好的控制效果。更多还原

【Abstract】 Based on the dynamic model of vehicle-bridge coupled vibration,in connection with the simply supported bridge model,the coupled acting force from vehicle to bridge is considered to be external disturbance,and the semi-active control model of bridge is proposed in this paper.The controlling model is deduced,which is based on the Hamilton principle,and it is found that this model features state feedback by itself.To the controlling model of quarter vehicle-bridge coupled vibration system,the fine controlling effect is demonstrated by using the Simulink.更多还原