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Petri net-based VR model interactive behaviour specification and control for maintaining training

机译：基于Petri网的VR模型交互行为规范和控制以进行培训

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摘要

Virtual reality (VR)-based maintenance training allows the trainee to practice disassembly operations for a maintenance task in a three-dimensional (3D), interactive digital world. To support virtual training, the user interactive behaviour that describes how the trainee interacts with objects in the virtual training environment must be programmed into the VR model. Interactive behaviour programming, however, is usually extensive and complicated, especially when accidental or unexpected events are to be incorporated. In this paper a Petri net (PN)-based approach is proposed to support VR model behaviour programming. The interactive behaviours for the trainee to disassemble a part in the virtual environment are represented by a PN, in which place nodes are used to represent different disassembly states and transition nodes define rules to move a token between places. The PN controls the VR simulation by requiring part disassembly status from the VR model to fire transitions and sending control data to the VR model to modify its behaviour nodes. Several case studies are presented to illustrate how the intuitive, graph-based process description and control language offered by this PN approach to facilitate interactive behaviour programming for VR-based maintenance training.
机译：基于虚拟现实（VR）的维护培训使受训人员可以在三维（3D）交互式数字世界中练习维护任务的拆卸操作。为了支持虚拟训练，必须将描述受训者如何与虚拟训练环境中的对象进行交互的用户交互行为编程到VR模型中。但是，交互式行为编程通常是广泛而复杂的，尤其是在要合并意外或意外事件时。本文提出了一种基于Petri网（PN）的方法来支持VR模型行为编程。受训人员在虚拟环境中拆卸零件的交互行为由PN表示，其中位置节点用于​​表示不同的拆卸状态，过渡节点定义在位置之间移动令牌的规则。 PN通过要求零件从VR模型的拆卸状态触发转换并将控制数据发送到VR模型以修改其行为节点，从而控制VR仿真。提出了一些案例研究，以说明此PN方法提供的直观，基于图的过程描述和控制语言如何促进基于VR的维护培训的交互行为编程。

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