Royana, Salwa Dzanur (2026) Pengembangan Sistem Kontrol PID dan Konfigurasi VSD pada Recirculating Water Plant. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pada Recirculating Water Plant ditemukan beberapa permasalahan, antara lain kesalahan instalasi electromagnetic flowmeter yang tidak sesuai standar, hasil pengukuran flow rate yang kurang akurat, serta performa kontrol PID yang tidak stabil. Ketidaktepatan desain maupun pemilihan komponen dapat menyebabkan penurunan performa sistem dan meningkatkan risiko kerusakan peralatan. Tugas akhir ini bertujuan untuk melakukan redesain sistem Recirculating Water Plant berdasarkan prinsip standar instalasi, melakukan sizing komponen utama plant , serta mengembangkan Human Machine Interface (HMI) berbasis wireless guna meningkatkan fleksibilitas pemantauan dan pengendalian sistem. Metodologi penelitian meliputi perancangan, simulasi sistem perpipaan menggunakan perangkat lunak Pipe Flow Expert, serta implementasi dan analisis hasil yang didapatkan. Hasil penelitian menunjukkan bahwa instalasi ulang electromagnetic flowmeter sesuai standar menghasilkan rekomendasi frekuensi operasi minimum sebesar 14 Hz untuk memastikan kondisi aliran full pipe. Sistem Wireless HMI berhasil diimplementasikan dengan fungsionalitas 100%, packet loss sebesar 0%, dan delay rata-rata 977,25 ms. Redesain sistem juga meningkatkan performa kontrol PID dengan menurunnya osilasi respon. Respon terbaik diperoleh menggunakan metode Cohen–Coon dengan tipe pengendalian PI, yang menghasilkan rise time 12,86 s, peak time 15 s, maximum overshoot 4,76%, settling time 138 s, dan error steady state 0,41%. Hasil ini menunjukkan bahwa redesain sistem mampu meningkatkan kestabilan respon kontrol pada recirculating water plant.
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Several problems were identified in the Recirculating Water Plant, including improper installation of the electromagnetic flowmeter that did not comply with standards, inaccurate flow rate measurements, and unstable PID control performance. Inappropriate system design and component selection can lead to reduced system performance and increased risk of equipment damage. This final project aims to redesign the recirculating water plant based on standard installation principles, perform sizing of the main plant components, and develop a wireless Human–Machine Interface (HMI) to improve the flexibility of system monitoring and control. The research methodology includes system design, piping system simulation using Pipe Flow Expert software, as well as implementation and analysis of the obtained results. The results show that reinstalling the electromagnetic flowmeter in accordance with standards provides a recommended minimum operating frequency of 14 Hz to ensure a full-pipe flow condition. The wireless HMI system was successfully implemented with 100% functionality, 0% packet loss, and an average delay of 977.25 ms. The system redesign also improved PID control performance by reducing response oscillations. The best control response was achieved using the Cohen–Coon method with PI control, resulting in a rise time 12,86 s, peak time 15 s, maximum overshoot 4,76%, settling time 138 s, dan error steady state 0,41%. These results indicate that the system redesign effectively enhances the stability of the control response in the recirculating water plant.
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