摘要
虚拟现实技术是车辆平顺性仿真展示的主要方法之一。为了能更直观地展示车辆平顺性,参考了1/2七自由度车辆模型,在分析三维模型车辆振动组成结构后构建了1/2二自由度车辆模型,并导出车辆垂向受力方程,实现了对车辆平顺性的模拟。为观测车辆平顺性仿真过程,提出"固定跟车"观测算法,通过平移和旋转变换,让摄像机视角与车辆位置相对固定并随车一起运动。实验表明,在车轮受到外力激励的情况下可以较真实地模拟模型车辆的振动状态,摄像机随车定点观测也更好地展现了仿真过程。
Virtual reality technology is one of the main methods for vehicle ride simulation. In order to show vehicle ride more di- rectly, a vehicle model of 1/2 7 degrees is established. By analyzing vibration composition of three-dimensional vehicle model, a vehicle model of 1/2 two degrees is built. Then vehicle vertical force equation is educed, and the vehicle ride simulation is a- chieved. To observe simulation process of the vehicle ride comfort, an observation algorithm named " fixed with the car" is pro- posed. By translation and rotation, the camera angle and position of the vehicle are relatively fixed and it moves with the vehicle. Experimental results show that when wheels of the model vehicle are motivated by external force, the vehicle vibration state can be simulated truthfully, and the camera's fixed-point observation with the vehicle can also show the simulation better.
出处
《计算机工程与设计》
CSCD
北大核心
2012年第10期3918-3922,共5页
Computer Engineering and Design
基金
"核高基"重大专项基金项目(2009ZX01038-002-002-2)
新世纪优秀人才支持计划
科技部"原创动漫软件开发技术人才"计划扶持基金项目(2009-593)
关键词
车辆平顺性
激励
车辆模型
虚拟摄像机
旋转矩阵
vehicle ride eomfort
excitation
vehicle model
virtual camera
rotation matrix