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Proceedings Paper

Haptic interfacing system using magnetorheological fluids
Author(s): Weihua Li; Hejun Du; Lit Song Ding; N. Q. Guo
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Paper Abstract

This paper presents design and development of a haptic interfacing system working with magnetorheological fluids. This system consists of three interchangeable parts: a MR actuator, an interfacing circuitry, and a computer program. The MR actuator is optimally analyzed and designed with finite element simulation, by considering the effects of both magnetic field formation and MR effect formation mechanism. The computer screen is portioned in various segments and the controllable software monitors the attributed values of the voltage to the screen. The computer program, via the parallel port-interfacing circuitry, monitors the current through the electromagnet. Simultaneously, a sensor detects the knob position; the corresponding motion can be observed through a cursor on a computer display. An interactive program is written to demonstrate the working of the haptic interface system. It displays a series of colour bands across the screen, each representing an assigned resistive torque value. As the cursor enters these zones, the corresponding feedback signal is sent to the haptic device.

Paper Details

Date Published: 14 November 2002
PDF: 7 pages
Proc. SPIE 4935, Smart Structures, Devices, and Systems, (14 November 2002); doi: 10.1117/12.469066
Show Author Affiliations
Weihua Li, Nanyang Technological Univ. (Singapore)
Hejun Du, Nanyang Technological Univ. (Singapore)
Lit Song Ding, Nanyang Technological Univ. (Singapore)
N. Q. Guo, Nanyang Technological Univ. (Singapore)


Published in SPIE Proceedings Vol. 4935:
Smart Structures, Devices, and Systems
Erol C. Harvey; Derek Abbott; Vijay K. Varadan, Editor(s)

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