| 摘要: |
| 虚拟装配的一个重要特性是交互性.要提高系统的交互性能,就要合理地分担人和机器的认知负荷,虚拟环境的感知机制是实现这一目标的重要方法.在形式地描述了虚拟装配系统结构后,提出虚拟装配中复合对象的感知机制,同时给出了装配交互中的感知模式,对感知过程给出了分析和构造.桌面虚拟装配的构造实践证明了所提出的感知机制具有很好的交互实时性,对于用户意图理解有较大的帮助作用 |
| 关键词: 虚拟环境 虚拟装配 人机交互 感知 特征设计 几何约束 软件构造 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(60033020);国家863高科技发展计划资助项目(863-511-942-012) |
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| Construction of Perception Mechanism in Virtual Assembly |
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CHENG Cheng
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| Abstract: |
| Interaction is one of the important features of virtual assembly. In order to promote the system s interactive performance, computer and human should share in cognitive burden in reason. The realization of virtual environment s perceptual mechanism is the critical method towards this objective. In this paper, a formal description of virtual assembly structure is given first, then a perceptual mechanism of compound object is put forward, lastly, a three-stage perception mode is given, and the perceptual process constructions which are needed in virtual assembly application are also analyzed. The desktop virtual assembly practices demonstrate that this perception mechanism has a good real-time interactive characteristic, and it is also a wonderful facility to help understanding user's intention. |
| Key words: virtual environment virtual assembly human-computer interaction perception feature-based design geometric constraint software construction |
