Virtual Reality Based Welding Training Simulator with 3D Multimodal Interaction
ABSTRACT In this paper, we present a prototype Virtual Welding Simulator, which supports interactive training of welding process by using multimodal interface that can deliver realistic experiences. The goal of this research is to overcome difficult problems by using virtual reality technology in training tasks where welding is treated as a principal manufacturing process. The system design and implementation technical issues are described including real-time simulation and visualization of welding bead, providing realistic experience through 3D multimodal interaction, presenting visual training guides for novice workers, and visual and interactive interface for training assessments. According to the results from an initial user study, the prototype VR based simulator system appears to be helpful for training welding tasks, especially in terms of providing visual training guides and instant training assessment.
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ABSTRACT: Training is usually regarded as one of the most natural application areas of virtual reality (VR). To date, most VR-based training systems have been situation based, but this paper examines the utility of VR for a different class of training: learning to execute exact motions, which are often required in sports and the arts. In this pa- per, we propose an interaction method, called Just Follow Me ( JFM), that uses an intuitive "ghost" metaphor and a first-person viewpoint for effective motion training. Using the ghost metaphor (GM), JFM visualizes the motion of the trainer in real time as a ghost (initially superimposed on the trainee) that emerges from one's own body. The trainee who observes the motion from the first-person viewpoint "follows" the ghostly master as closely as possible to learn the motion. Our basic hypothesis is that such a VR system can help a student learn motion effectively and quickly, comparably to the indirect real-world teaching methods. Our evaluation results show that JFM produces training and transfer effects as good as—and, in certain situations, better than—in the real world. We believe that this is due to the more direct and correct transfer of proprioceptive information from the trainer to the trainee.Presence. 01/2002; 11:304-323.
Article: Dextrous Virtual Work.Commun. ACM. 01/1996; 39:37-45.
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ABSTRACT: Certification Inc., a Montreal based company, has developed an innovative hands-on welding simulator solution to help build welding workforce in the most simple way. The solution lies in virtual reality technology, which has been fully tested since the early 90's. President and founder of 123 Certification Inc., Mr. Claude Choquet Ing. Msc. IWE, acts as a bridge between the welding and the programming world. Working in these fields for more than 20 years, he has filed 12 patents world-wide for a gesture control platform with all kinds of leading edge hardware related to simulation. In summer 2006, he was proud to be invited at the annual IIW International Welding Congress in Quebec City to launch the ARC+ welding simulator. A 100% virtual reality system and web based training center was developed to simulate multiprocess, multimaterial, multiposition, and multipass welding. The simulator is intended to train welding students and apprentices in schools or industries. The welding simulator is composed of a real welding electrode holder (GTAW) and gun (GMAW-FCAW), a head-mounted display (HMD), a 6 degrees of freedom tracking system for interaction between the user's hands and head, as well as external audio speakers. Both guns and HMD are interacting online and simultaneously. The welding simulation is based on the law of physics and empirical results from detailed analysis of a series of welding tests based on industrial applications tested over the last 20 years. (1)