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"Sistem Coupled tank umum digunakan pada bidang industri otomatis, salah satu pengendalian yang umum terjadi pada coupled tank adalah pengendalian ketinggian air. Sistem pengendalian tersebut bertujuan untuk menjaga ketinggian air yang berada pada tangki. Penelitian ini melakukan simulasi pengendalian ketinggian air pada coupled tank dengan menerapkan Reinforcement Learning (RL) dengan algoritma Deep Deterministic Policy Gradient (DDPG). Proses simulasi tersebut dilakukan menggunakan simulink pada MATLAB. Algoritma DDPG melalui serangkaian training sebelum diimplementasikan pada sistem coupled tank. Kemudian pengujian algoritma DDPG dilakukan dengan memvariasikan nilai set point dari ketinggian air dan sistem diberikan gangguan berupa bertambahnya flow in dari control valve lain. Performa dari algorima DDPG dalam sistem pengendalian dilihat dari beberapa parameter seperti overshoot, rise time, settling time, dan steady state error. Hasil yang diperoleh pada penelitian ini bahwa algoritma DDPG memperoleh nilai settling time terbesar sebesar 109 detik, nilai steady state error terbesar sebesar 0.067%. Algoritma DDPG juga mampu mengatasi gangguan dengan waktu terbesar sebesar 97 detik untuk membuat sistem kembali stabil.

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The Coupled Tank system is commonly used in the field of industrial automation, and one of the common controls implemented in this system is water level control. The purpose of this study is to simulate water level control in a coupled tank using Reinforcement Learning (RL) with the Deep Deterministic Policy Gradient (DDPG) algorithm. The simulation process is performed using Simulink in MATLAB. The DDPG algorithm undergoes a series of training sessions before being implemented in the coupled tank system. Subsequently, the DDPG algorithm is tested by varying the set point values of the water level and introducing disturbances in the form of increased flow from another control valve. The performance of the DDPG algorithm in the control system is evaluated based on parameters such as overshoot, rise time, settling time, and steady-state error. The results obtained in this study show that the DDPG algorithm achieves a maximum settling time of 109 seconds and a maximum steady-state error of 0.067%. The DDPG algorithm is also capable of overcoming disturbances, with the longest recovery time of 97 seconds to restore system stability."

"Proses industri banyak melibatkan penggunaan coupled tank, salah satu proses yang dilakukan adalah pengendalian ketinggian cairan. Pada penelitian ini dilakukan pengendalian ketinggian air pada sistem coupled tank menggunakan Reinforcement Learning berbasis algoritma Soft Actor Critic (SAC) menggunakan MATLAB dan Simulink. Sebelum diimplementasikan ke dalam sistem coupled tank dilakukan serangkaian proses training pada algoritma SAC. Hasil dari proses training ini merupakan action dalam bentuk besar bukaan control valve. Kinerja pengendali dievaluasi menggunakan nilai rise time, settling time, overshoot, dan steady state error. Berdasarkan parameter ini, algoritma SAC dapat mengendalikan sistem dengan baik dengan rise time kurang dari 47 sekon, settling time kurang dari 62 sekon, overshoot dibawah 10%, dan steady state error kurang dari 1%. Ketika diberikan gangguan algoritma SAC dapat kembali ke keadaan stabil dalam waktu kurang dari 45 sekon.

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A lot of industrial processes utilize the use of coupled tanks, with one of the processes being liquid level control. In this study, Reinforcement Learning is implemented to control the water level in the coupled tank system using Soft Actor Critic (SAC) algorithm through MATLAB and Simulink. Before being implemented into the coupled tank system, the SAC algorithm went through a series of training processes. The result of this training process is an action in the form of adjusting control valve opening percentage. The controller performance is evaluated using parameters such as rise time, settling time, overshoot, and steady state error. Based on these parameters, the SAC algorithm manages to perform well in controlling the system with a rise time of less than 47 seconds, a settling time of less than 62 seconds, overshoot of less than 10%, and steady state error below 1%. When the system received a disturbance the SAC algorithm can return to a steady state in less than 45 seconds."

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Penerapan teknologi sensor berbasis IoT dalam pemantauan ketinggian air sungai harapannya akan meningkatkan efisiensi pengumpulan data ketinggian air. Penelitian ini akan membandingkan hasil pengukuran ketinggian air di Sungai Ciliwung lebih tepatnya pada PS. Depok. Perbandingan yang dilakukan akan menunjukkan seberapa besar kesepakatan dan kinerja dari metode sensor elektromagnetik berbasis IoT dan metode konvensional peilschaal. Data pengukuran air sungai metode konvensional didapatkan dari BBWS (Balai Besar Wilayah Sungai) Ciliwung Cisadane. Sementara, hasil pengukuran ketinggian air sungai metode sensor berbasis IoT didapatkan dari sistem PANTIR (Pemantau Tinggi Muka Air) dari Departemen Geosains FMIPA Universitas Indonesia.

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It is hoped that the application of sensor technology in monitoring river water levels will increase the efficiency of collecting water level data. This study will compare the results of measuring the water level in the Ciliwung River, more precisely at the PS. Depok. The comparison carried out will show how much agreement and performance the IoT-based electromagnetic sensor method and the conventional peilschaal method have. Conventional river water measurement data was obtained from BBWS (River Area Center) Ciliwung Cisadane. Meanwhile, the results of measuring river water levels using IoT based sensor methods were obtained from the PANTIR (Water Level Monitoring) system from the Geosciences Department, FMIPA, University of Indonesia."