A Tiny Haptic Knob Based on Magnetorheological Fluids
<p>Schematic and cross-sectional illustrations of the proposed haptic knob: (<b>a</b>–<b>c</b>) assembling procedure of the proposed haptic knob; (<b>d</b>) assembled haptic knob; (<b>e</b>) its cross-sectional view, and (<b>f</b>) schematic illustration of the proposed haptic knob when it rotates</p> "> Figure 2
<p>Detailed structure of the housing and the rotary shaft, and the combined process with the solenoid coil: (<b>a</b>) Process for combining the housing and the solenoid coil; (<b>b</b>) process for combining the rotary shaft and the housing; (<b>c</b>) cross-sectional view of the housing equipped with the solenoid coil, rotary shaft, and housing cover; (<b>d</b>) bottom view of the rotary shaft; (<b>e</b>) long and slender bumps on the surface of the rotary shaft.</p> "> Figure 3
<p>Simulated resistive torques as a function of the (<b>a</b>) oblique angle of the inclined surface and (<b>b</b>) gap thickness.</p> "> Figure 4
<p>Magnetomotive force according to the wire diameter of the solenoid coil and limited power consumption.</p> "> Figure 5
<p>Operating principle of the proposed haptic knob and its finite element method simulation: (<b>a</b>) Design of the proposed haptic knob; (<b>b</b>) magnetorheological (MR) fluids before magnetic field; (<b>c</b>) MR fluids after magnetic field; (<b>d</b>) shear mode of MR fluids; (<b>e</b>) flow mode of MR fluids; (<b>f</b>) finite element method simulation of the proposed haptic knob.</p> "> Figure 6
<p>Parametric setup of the proposed haptic knob: (<b>a</b>) Cross-sectional view of the proposed haptic knob (left: the magnetic simulation result, right: four activation regions in the knob); (<b>b</b>) enlarged picture of region I; (<b>c</b>) enlarged picture of region II; (<b>d</b>) enlarged picture of region III; and (<b>e</b>) enlarged picture of region IV.</p> "> Figure 7
<p>Calculated resistive torque by the applied current and its fitted curve.</p> "> Figure 8
<p>Components and prototype of the proposed actuator.</p> "> Figure 9
<p>Experimental setup of the proposed actuator.</p> "> Figure 10
<p>Experimental result of the proposed actuator.</p> "> Figure 11
<p>Measured bandwidth of the proposed haptic knob.</p> "> Figure 12
<p>(<b>a</b>) Resistive torque and (<b>b</b>) measured resistive torque rate at three angular velocities (90 °/s, 180 °/s, and 270 °/s).</p> ">
Abstract
:1. Introduction
2. Design of Proposed Haptic Knob
2.1. Structure of Proposed Haptic Knob
2.2. Design of Rotary Shaft and Housing
2.3. Design of Solenoid Coil
2.4. Operating Principle of Proposed Haptic Knob and Its Magnetic Flux Path Simulation
2.5. Fabrication of Proposed Haptic Knob
3. Results and Evaluation
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Heo, Y.H.; Choi, D.-S.; Yun, I.-H.; Kim, S.-Y. A Tiny Haptic Knob Based on Magnetorheological Fluids. Appl. Sci. 2020, 10, 5118. https://doi.org/10.3390/app10155118
Heo YH, Choi D-S, Yun I-H, Kim S-Y. A Tiny Haptic Knob Based on Magnetorheological Fluids. Applied Sciences. 2020; 10(15):5118. https://doi.org/10.3390/app10155118
Chicago/Turabian StyleHeo, Yong Hae, Dong-Soo Choi, In-Ho Yun, and Sang-Youn Kim. 2020. "A Tiny Haptic Knob Based on Magnetorheological Fluids" Applied Sciences 10, no. 15: 5118. https://doi.org/10.3390/app10155118