THE CONTROL OF FAN SPEED USING FPGA BOARDS
Journal Title: Informatyka Automatyka Pomiary w Gospodarce i Ochronie Środowiska - Year 2014, Vol 4, Issue 3
Abstract
This article describes the implementation of a DC fan controller using a field-programmable gate array (FPGA). Hardware description language (VHDL) is used to design and implement the processor of this controller. The processor is composed of a memory block that has a functionof generation a Look up Table (LUT). Data saved in the memory block are used to generate a triangular signal. A carried signal can be added. This signal can be generated from digital temperature sensors. A comparator compares between the triangular signal and the carried signal to generate a Pulse-Width Modulation (PWM) output that controls the fan speed. The fan speed depends on the digital temperature sensor output. When the output signalof the sensor equals the output of the triangular wave, the fan speed is maximal and the temperature is high. This design requires a FPGA boardand software ISE 14.4.
Authors and Affiliations
Mayada Daboul, Ziad Nouman
Keywords
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- EP ID EP73216
- DOI 10.5604/20830157.1121364
- Views 119
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