Analytical Modeling of Disk-Type Piezoelectric Variable Friction Tactile Displays
- Analytical Modeling of Disk-Type Piezoelectric Variable Friction Tactile Displays
- 손권중; 김민규; 김기훈
- Issue Date
- IEEE/ASME International Conference on Advanced Intelligent Mechatronics
- This paper presents analytical modeling of disktype
Variable Friction Tactile Displays (VFTD) producing
squeeze-film air damping elicited by ultrasonic flexural standing
waves of piezoelectric-glass composites. Energy-based Lagrangian
mechanics was employed to derive the system dynamic
equations of motion of the VFTD vibrating at its fundamental
mode. The coefficient of mode shape function and the accumulated
electric charge on a piezoelectric element were adopted
as two generalized coordinates for the Lagrangian formulation.
The derived analytical models can predict undamped free and
forced vibrations of VFTDs with hinged or clamped edges. The
issues of open-circuit and short-circuit fundamental frequencies
and the electromechanical coupling coefficients for several
VFTDs with different dimensions were discussed for the optimal
design of vibration-induced tactile displays. The theoretical
fundamental frequencies were compared with experimental
results for the verification of the proposed analytical model.
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