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- W2887832017 abstract "Refreshable Braille Displays (RBD) are electro-mechanical devices used by people with visual impairment to access textual e-content using a tactile display interface. RBD systems developed using the Shape Memory Alloy (SMA) wires pose various challenges of controlling a large number of SMA actuators, supplying high driving current for quick response and implementing an active closed-loop control for encompassing variations in operating conditions and mechanical tolerances. These challenges can be addressed with two different hardware architectures: a microcontroller-based and an FPGA-based power controller. In this paper, a novel FPGA-based embedded power controller is proposed and implemented for the SMA actuators used in RBD. It further compares the device's performance, size, cost and energy efficiency with the microcontroller-based system and also emphasizes the role of programmable logic devices like FPGAs in replicating a closed loop actuator control where multiple channels like SMA actuators are involved." @default.
- W2887832017 created "2018-08-22" @default.
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- W2887832017 date "2018-07-01" @default.
- W2887832017 modified "2023-09-25" @default.
- W2887832017 title "FPGA-Based Controllers for Compact Low Power Refreshable Braille Display" @default.
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- W2887832017 doi "https://doi.org/10.1109/isvlsi.2018.00120" @default.
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