Design of new Braille display using inverse principle of tuned mass damper

This paper proposes a new mechanism of the Braille display unit based on the inverse principle of the tuned mass damper. To realize the mechanism, the first spring named Σ-typed spring is newly designed and analyzed by using the cantilever model. Furthermore, the dynamical model of the driving unit is also derived based on classical mechanics to design the entire motion in advance. Then the experimental results of the prototype are shown and discussed compared to the simulation results of the dynamical model. The experiments have good agreements with the simulations.