Abstract
This paper describes a piezoelectric vibration control through fuzzy logic for direct current converter, which is the piezoelectric will be placed inside the unique microphone to make it vibrating and produce the direct current. A experiment were made between piezoelectric barium titanate (BT) and piezoelectric lead zirconate titanate (PZT) to compare between those two crystal type which one is able produce energy more electricity and chosen as piezoelectric microphone material. Element effects such as environmental temperature on system also being consider. The piezoelectric that produce highest output was used as the piezoelectric material and it was directly exposed to acoustic waves. Stresses in the crystals, resulting from a sound field, generate an output proportional to the acoustic pressure. The piezoelectric microphone diaphragm thickness is 1mm. The piezoelectric microphone also was connected to an amplifier system to make sure the output can be seen. However the gain of the amplifier is control by the fuzzy logic controller and the gain of the amplifier range is from 1 to 200.
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