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Mechanical Engineering Commons

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Full-Text Articles in Mechanical Engineering

Vrspatial: Designing Spatial Mechanisms Using Virtual Reality, Judy M. Vance, Pierre M. Larochelle, Denis Dorozhkin Sep 2002

Vrspatial: Designing Spatial Mechanisms Using Virtual Reality, Judy M. Vance, Pierre M. Larochelle, Denis Dorozhkin

Mechanical Engineering Conference Presentations, Papers, and Proceedings

The traditional computer interface provides a two-dimensional (2D) interface to design. The monitor is a two-dimensional visual display and the desktop mouse is a two-dimensional input device. These tools are sufficient for designing 2D products such as planar linkages. When these tools are used to design three-dimensional (3D) products however, the designer must learn how to use the 2D tools to interact with objects defined in three-dimensional space. Virtual reality technology provides truly three-dimensional tools, with position tracked visual displays and input devices, that allow interaction with 3D digital products. Over the last few years we have developed a virtual ...


Implementing Speech Recognition In Virtual Reality, Denis V. Dorozhkin, Judy M. Vance Sep 2002

Implementing Speech Recognition In Virtual Reality, Denis V. Dorozhkin, Judy M. Vance

Mechanical Engineering Conference Presentations, Papers, and Proceedings

Virtual Reality (VR) is becoming an important tool in the engineering product development process. The virtual environment provides the user with the ability to interact with three-dimensional digital representations of products using natural head and hand motions. While interacting with digital objects in VR seems natural, the use of traditional two-dimensional menu systems does not always provide a convenient interface to controlling task specifications in the three-dimensional space. New human-computer-interfaces are needed for this emerging VR design tool. This paper will present the details of implementing a speaker-independent, command and control, speech recognition menuing system for a virtual reality application ...


Spatial Mechanism Design In Virtual Reality With Networking, John N. Kihonge, Pierre M. Larochelle, Judy M. Vance Aug 2002

Spatial Mechanism Design In Virtual Reality With Networking, John N. Kihonge, Pierre M. Larochelle, Judy M. Vance

Mechanical Engineering Publications

Mechanisms are used in many devices to move a rigid body through a finite sequence of prescribed locations. The most commonly used mechanisms are four-bar planar mechanisms that move an object in one plane in space. Spatial mechanisms allow motion in three-dimensions (3D), however, to date they are rarely implemented in industry in great part due to the inherent visualization and design challenges involved. Nevertheless, they do provide promise as a practical solution to spatial motion generation and therefore remain an active area of research. Spatial 4C mechanisms are two degree-of-freedom kinematic closed-chains consisting of four rigid links simply connected ...