制造系统虚拟环境行为建模研究  

Behavior modeling of virtual manufacturing environment

作　　者：赵骥[1] 肖田元[1] 韩向利[1] 董建华[1] 赵银燕[1] 

机构地区：[1]清华大学自动化系国家CIMS工程技术研究中心,北京100084

出　　处：《清华大学学报（自然科学版）》2002年第3期369-372,共4页Journal of Tsinghua University(Science and Technology)

基　　金：清华大学"九八五"资助项目 (10 10 61)

摘　　要：虚拟制造系统作为物理制造系统在信息域的映射 ,需要对制造系统在各个层面上进行表达 ,行为建模是制造环境建模的重要内容。提出了制造系统虚拟环境行为建模方法 ,采用多 Agent方法描述制造系统虚拟环境 ,将该环境划分为两种基本成分 :Agent和它们之间的关系。以面向对象Petri网的状态变迁机制作为 Agent的行为推理模式 ,以实体的几何状态、物理状态及运动状态等属性变迁的计算作为Agent行为计算方法 ,以 Agent间相互消息传递关系来描述系统行为逻辑 ,以机器人、机床、缓冲器组成的小系统为例 ,给出了行为推理、行为计算、消息处理的算法。最后 ,采用虚拟现实工具Virtual manufacturing systems, as a information map of real manufacturing systems, need to describe all aspects of the real manufacturing system. Behavior modeling is an important component in the virtual manufacturing environment. An approach as the behavior modeling in the virtual manufacturing environment is proposed in this paper. In the virtual environment modeled with multi agent system, the state transition mechanism described by an object oriented Petri net is used as the agent behavior inference method. The variance computations of geometrical shape, physical properties and movement parameters are employed for the behavior computation pattern of the agents. The message processing mechanism is adopted to describe the system behavior. A system consisting of a robot, a tool, and a buffer is used as an example to demonstrate the algorithms for agent behavior inference, agent behavior computation and message processing. Finally, the whole system is realized experimentally in a WTK environment.

关 键 词：制造系统 虚拟环境 行为建模 AGENT行为 PETRI网 

分 类 号：TH164[机械工程—机械制造及自动化] TP391.9[自动化与计算机技术—计算机应用技术]