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Development and application of immersive virtual environment for assembly tasks
Zhao, Weiwei
Zhao, Weiwei
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Dissertation
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2006-12
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Electronic dissertations
Electronic dissertations
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Abstract
This research is aimed at the development and application of an immersive virtual reality
environment (IVE) for performing assembly and maintenance simulations using the Jack®
software package. The Flock of Birds™ motion tracking system is used to capture body postures
of an immersed human and reproduce it in real-time in the virtual environment. The
Cyberglove™ is used to capture finger movements in real-time for realistic grasp interaction. A
comprehensive set of voice commands has been developed to provide significant functionality to
allow one person to control the virtual environment while immersed in the environment, thereby
improving ease of use and productivity. One of the most important applications is a method by
which the immersed human can walk and fly through the virtual environment, thereby greatly
expanding the envelope of the virtual environment navigable under the constraints imposed by
the limited tracking volume. These capabilities have been used to investigate assembly
simulation of the windshield deicer of a Cessna aircraft.
After accomplishing successful improvement in fine tuning of the capabilities developed
for VR, we aimed at employing the applicability of VR in field of ergonomics. Improvements
include improving the ease of use of the capabilities developed so far as well as implementing
new types of grasping, etc. One topic of research is the fidelity of the virtual environment in
capturing and mapping immersed user postures on to digital humanoids. Different sensor
configurations were being analyzed and multiple operators were used to arrive at the general
conclusions and recommendations to maximize the accuracy of the postures. We are also
implementing certain developments to enable an immersed user to experience the reach,
visibility and ergonomics that are experienced by operators of different sizes for any given
design of tooling and operations. The motions performed by the immersed operator were mapped
to humanoids representing standard operators such as 5th, 50th or 95th percentile males and the
postures adopted are subjected to ergonomic analysis.
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Thesis (Ph.D.)--Wichita State University, College of Engineering, Dept. of Industrial and Manufacturing Engineering
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Wichita State University
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Copyright Weiwei Zhao, 2006. All rights reserved