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Keywords = kinesthetic knob

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11 pages, 4836 KiB  
Article
A Tiny Haptic Knob Based on Magnetorheological Fluids
by Yong Hae Heo, Dong-Soo Choi, In-Ho Yun and Sang-Youn Kim
Appl. Sci. 2020, 10(15), 5118; https://doi.org/10.3390/app10155118 - 25 Jul 2020
Cited by 16 | Viewed by 4433
Abstract
In this paper, we propose a tiny haptic knob that creates torque feedback in consumer electronic devices. To develop the proposed haptic knob, we use a magnetorheological (MR) fluid. When an input current is applied to a solenoid coil, a magnetic field causes [...] Read more.
In this paper, we propose a tiny haptic knob that creates torque feedback in consumer electronic devices. To develop the proposed haptic knob, we use a magnetorheological (MR) fluid. When an input current is applied to a solenoid coil, a magnetic field causes a change in the MR fluid’s viscosity. This change allows the proposed haptic knob to generate a resistive torque. We optimize the structure of the haptic knob, in which two operating modes of MR fluids contribute to the actuation simultaneously. We conduct magnetic path simulation and resistive torque simulation using the finite element method and perform experiments to measure the resistive torque and its torque rate according to the rotational speed and applied current. The results show that the proposed haptic knob generates sufficient torque feedback to stimulate users and creates a variety of haptic sensations. Full article
(This article belongs to the Special Issue Haptics: Technology and Applications)
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