GDL

Distributed Control System on Water Level Plant Using PI-D Methode and Fuzzy Logic

Skripsi, 022 / 2021 / EK
Undergraduate Theses from JBPTPPOLBAN / 2022-12-06 11:12:24
Oleh : Rangga Vega Santoso - 171354024 (rangga.vega.tec417@polban.ac.id)
Dibuat : 2022-12-06, dengan 4 file

Keyword : LCU, logika fuzzy, level air, master control, PI-D
Subjek : LCU, fuzzy logic, water level, master control, PI-D

Industri pengolahan air umumnya menggunakan kendali PID (Proportional Integral Derivative) karena perancangan yang mudah dan sederhana. Namun kendali tersebut dapat menimbulkan fenomena set-point kick atau aktuator menjadi sangat reaktif terhadap perubahan sinyal referensi. Tugas Akhir ini membahas suatu sistem metode kendali PI-D (Proportional Integral-Derivative) yang berfungsi untuk mengatasi fenomena set-point kick yang diterapkan di LCU (Local Control Unit) pada sistem kendali terdistribusi. Algoritma master control RTU (Remote Terminal Unit) menggunakan logika fuzzy. Terdapat HMI (Human Machine Interface) berfungsi untuk menentukan nilai ketinggian air dan sistem monitoring. Hasil pengujian dari sistem ini respon kendali PI-D dapat mengatasi fenomena setpoint kick dengan nilai rise time 0,97 detik sedangkan nilai rise time kendali PID adalah 0,55 detik. Respon kendali PI-D pada HMI menunjukan respon trasien yang lebih baik dari kendali PID dengan nilai rise time 1,68 detik, overshoot bernilai 0%, settling time 0,01 detik, dan error steady state bernilai 0. Logika fuzzy dapat menghasilkan nilai SV (Set-point Value) untuk masing-masing LCU. Komunikasi menggunakan protokol modbus TCP/IP dan ethernet UDP berjalan dengan baik. Respon PV (Process Value) global dapat mencapai SV (Set-point) global pada kedua tangki level. Kata Kunci: LCU, logika fuzzy, level air, master control, PI-D.

Deskripsi Alternatif :

The water treatment industry generally uses PID (Proportional Integral Derivative) control because of its easy and simple design. However, this control can cause a set-point kick phenomenon or the actuator becomes very reactive to changes in the reference signal. This final project aims to design the PI-D (Proportional-Integral-Derivative) control system to overcome the setpoint kick problem which is applied to the LCU (Local Control Unit) in a distributed control system. The fuzzy logic algorithm is used to control the master control RTU (Remote Terminal Unit). Human Machine Interface (HMI) is used to determine the value of water level and system monitoring. The experiment results shown that the PI-D control can overcome the setpoint kick phenomenon compared to PID Control with the rise time value of the output response are 0.97 s and 0.55 s, respectively. The response of the PI-D control on the HMI shows a better transient response than the PID control with a rise time value of 1.68 seconds, a feasible overshoot of 0%, a settling time of 0.01 seconds, and a steady-state error of 0. Fuzzy logic can produce an SV (Set-point Value) values for each LCU. Communication using the Modbus TCP/IP protocol and UDP ethernet goes well. The global PV (Process Value) response can reach global SV (Set-point) at the level of both tanks. Keywords: LCU, fuzzy logic, water level, master control, PI-D.

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