Electromagnetic Linear Micro Drives for Braille Screen: Characteristics, Control and Optimization

The graphical interfaces based on visual representation and direct manipulation of objects made the adequate use of computers quite difficult for people with reduced sight. A new type graphical Braille screen is developed. Permanent magnet linear actuator intended for driving a needle in Braille screen has been optimized. Finite element analysis, response surface methodology and design of experiments have been employed for the optimization. The influence of different parameters of the construction of a recently developed permanent magnet linear electromagnetic actuator for driving a needle in a Braille screen is discussed. The static force characteristics and magnetic field distribution is studied when varying the parameters.

[1]  Kay Hameyer,et al.  Design of a High Power Density Electromagnetic Actuator for a Portable Braille Display , 2002 .

[2]  Hyuk-Jun Kwon,et al.  Braille code display device with a PDMS membrane and thermopneumatic actuator , 2008, 2008 IEEE 21st International Conference on Micro Electro Mechanical Systems.

[3]  Kiyoshi Ioi,et al.  Design of new Braille display using inverse principle of tuned mass damper , 2010, Proceedings of SICE Annual Conference 2010.

[4]  T. Someya,et al.  A flexible, lightweight Braille sheet display with plastic actuators driven by an organic field-effect transistor active matrix , 2005, IEEE InternationalElectron Devices Meeting, 2005. IEDM Technical Digest..

[5]  Ramiro Velazquez,et al.  Characterization of a Piezoelectric Ultrasonic Linear Motor for Braille Displays , 2009, 2009 Electronics, Robotics and Automotive Mechanics Conference (CERMA).

[6]  Ivan Yatchev,et al.  Static Force Characteristics of Electromagnetic Actuators for Braille Screen , 2011 .

[7]  Kostadin Kostadinov,et al.  Design of Incorporated Macro-micro Robots for Macro and Micro Operations , 2011, ICINCO.

[8]  Jae-Bok Song,et al.  Development of a Braille Display using Piezoelectric Linear Motors , 2006, 2006 SICE-ICASE International Joint Conference.

[9]  D. R. Chaves,et al.  Microtuators of SMA for Braille display system , 2009, 2009 IEEE International Workshop on Medical Measurements and Applications.