基于虚拟现实的自行车运动仿真系统设计与实现67.pdf

上海大学
硕士学位论文
基于虚拟现实的自行车运动仿真系统设计与实现
姓名:吴甄
申请学位级别:硕士
专业:机械电子工程
指导教师:吴家麒
20080201
摘要
虚拟现实( irtual Reality,VR)是最近三十年オ发展起来的前沿技术。它以模
拟方式为使用者创造一个实时反映实体对象变化与相互作用的三维图形世界,在
视、听、触、嗅等感知行为的逼真体验中,参与者可以直接参与和探索虚拟对象
在所处环境中的作用和变化,仿佛置身于一个虚拟的世界中,产生沉浸感
运动仿真交互平台是虚拟现实技术和机电一体化相结合的一个典型应用。例
如汽车,自行车,飞机,轮船等各式模拟器已经得到发展且已被广泛应用到测试
设计,环境评估,驾驶训练,娛乐等领域。基于虚拟现实技术的交互式自行车运
动仿真系统,是这种应用的一个拓展,它集机械、控制、计算机等技术为一体,
提供了一种新型的交互式健身娱乐工具。但这类系统大都结构复杂、体积庞大
价格昂贵,一般只能在展览场馆中陈列演示。本文试图在保留这类系统主要功能
的同时,对系统进行简化,从而将之从展览馆中请出,进入学校,社区,甚至家
庭。为此本文从分析系统功能入手,确定了系统总体方案,详细地介绍了各个平
台的结构设计,系统的控制系统设计,并简单介绍了视景部分的组成和实现方法。
在完成上述研究工作的基础上,进行了系统加工和调试,达到了预期的目标,
让参与者在由计算机构造的三维虚拟场景中获得如同在真实环境中骑车的体验
和效果
关键词:虚拟现实,机电一体化,自行车运动,仿真
ABSTRACT
Virtual Reality is a forth technology developed in recent years. It creates a 3D
graphical world which can reflect the real-time changes and interactive effects of the
virtual environment. The participators can directly taste and explore virtual worlds
effects and changes with the verisimilitude experience of vision, hearing, touch and
smell. It seems as if the participators stay in a virtual world and get the immersion
feeling.
Motion simulation platform is a typical application of the combination of VR
and mechatronics technology. Various vehicle simulators, such as automobile,
aerocraft, and watercraft simulators have been developed and are widely used for the
design testing, environments evaluation, drive training, entertainment, and so on. A
bicycle motion simulator system based on VR, is an extension of these applications
It is a new type interactive exercise-entertainment tool which is constructed through
mechatronics, computer and microchip technologies etc. Generally this system is just
showed in the exhibition halls, because the system has complicated structures, large
volume and high price. We try to simplify the system in this paper in order to
introduce it into school, community, and even family, while the mainly function of
the system is reserved. Based on analyzing the function of the system, the paper
determines the system scheme, then describes the structure design of the mechanical
platform and the design of the system control, and also simply introduces the
iew-sight parts composing and implementing methods.
Based on the research work mentioned above, we processed the parts and
debugged the system, and finally achieve the anticipated aim. The participator can
experience the feeling of riding on bicycle in a real world while traveling in a 3D
virtual environment
Keywords: Virtual Reality, mechatronics, bicycle motion, simulator