Basic Design of Small-Sized Linear Electromagnetic Solenoid for Tactile Display

Abstract

Methods for digitizing braille have been developed, because braille typed on paper deteriorates easily. This paper proposes a handy type of tactile display with a low-input-power linear electromagnetic solenoid (LES) used for a data terminal. The LES allows the data terminal to display many dots. The characteristics of a cylindrical LES were calculated by using the FEM analysis method. As found to be a result, the retention thrust and attractive thrust were 2.7 and 0.51 newtons, respectively. The attractive thrust/input ratio was thus found to be 391 millinewtons/watt.