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Stability of haptic displays in distributed virtual environment

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Stability of haptic displays in distributed virtual environment

Islam, Md. Wahidul (2001) Stability of haptic displays in distributed virtual environment. Masters thesis, Concordia University.

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Abstract

To meet the growing demand of the development of Distributed Virtual Environment (DVE), stability of haptic displays in DVE is now an interesting and challenging research problem. In the case of network-based haptic display the criteria for stability are far more complicated and requires the force and kinematic data to be transferred over the communication links. In this thesis, Dead Reckoning Algorithm in haptic simulation is introduced to guarantee stability for any kind of time delays or loss of information over network. Haptic dead-reckoning allows a comparatively simpler, local environment model to serve the haptic rendering while being periodically updated by a more complex and accurate model. Two force calculation models--"Complex" and "Simple" are simulated with an order reduction technique in a two user DVE with haptic devices. Force outputs for different types of interaction from both the force calculation models along with the errors between them are investigated. Stability and discrete-time passivity of haptic displays are guaranteed for any kind of delays without sacrificing the total loop gain. This technique enhances the real-time performance in force feedback realization and reduces the human risk involved.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Thesis (Masters)
Authors:Islam, Md. Wahidul
Pagination:xi, 117 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:Theses (M.A.Sc.)
Program:Electrical and Computer Engineering
Date:2001
Thesis Supervisor(s):Al-Khalili, Asim J
ID Code:1637
Deposited By:Concordia University Libraries
Deposited On:27 Aug 2009 13:21
Last Modified:08 Dec 2010 10:21
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