PEMODELAN KONTROL FUZZY PADA PEMANAS FUEL GAS

Nasrul ZA, Leni Maulinda, Amri Amri

Abstract


Kendali berbasis logika fuzzy saat ini banyak digunakan, menurut hasil beberapa penelitian terdahulu melaporkan kendali fuzzy mempunyai unjuk kerja lebih baik dibandingkan  kendali konvensional Proporsional Integral Derivative (PID). Tujuan dari penelitian ini adalah untuk melihat kemungkinan  aplikasi kontrol fuzzy pada sistem feed reject di PT. Arun NGL yang berfungsi mengatur temperatur aliran gas yang menuju ke kompresor fuel gas. Pada plant temperatur  harus dijaga pada -37,5 °C, tujuannya untuk mencegah terjadinya surging pada kompresor fuel gas. Metodologi penelitian ini didasarkan pada simulasi komputer untuk membandingkan unjuk kerja kontrol FInc dengan kontrol Fuzzy dalam mengontrol temperatur. Hasil simulasi menunjukkan bahwa, pada pengujian model kontrol dengan variasi setpoint pada range temperatur yang kecil model kontrol FInc lebih cepat 2 menit/°C untuk mencapai setpoint. Kenaikan dan penurunan temperatur setpoint secara bertahap pada range temperatur yang besar model kontrol FInc lebih cepat mencapai setpoint 1,41 menit/°C. Pada kenaikan dan penurunan temperatur secara drastis model kontrol FInc lebih cepat 0,89 menit mencapai setpoint. Kontrol FInc mempunyai kinerja yang lebih baik pada posisi error yang besar dan laju alir yang besar.


Keywords


logika Fuzzy; LNG Exchanger

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References


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