Pangestu, Vallen (2026) Analisis Perbandingan Performa Kontrol PID Existing Dan Hasil Tuning Ziegler-Nichols Pada Pengendalian Level Evaporator Tank 06-E-304C Pabrik ZA III PT. Petrokimia Gresik. Project Report. [s.n.]. (Unpublished)
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Abstract
Pengendalian level fluida pada Evaporator Tank 06-E–304C di Pabrik ZA III PT. Petrokimia Gresik memegang peran krusial dalam menjaga kelancaran proses evaporasi dan kualitas produk pupuk Ammonium Sulfate (ZA). Seiring berjalannya waktu operasi, karakteristik dinamika sistem dapat mengalami pergeseran sehingga perlu dilakukan evaluasi kinerja sistem kontrol saat ini. Penelitian ini bertujuan untuk membandingkan performa respons transien kontrol PI existing dengan hasil tuning menggunakan metode Ziegler-Nichols (Z-N) guna mengevaluasi apakah sistem memerlukan tuning ulang. Hasil pengujian simulasi menunjukkan bahwa kontrol PI existing (Kp=5,94; Ki=0,0495) menghasilkan performa yang sangat baik dan stabil, dengan maximum overshoot yang sangat kecil yaitu 4,4%, waktu pencapaian steady state (settling time) 50 detik, dan error steady-state 0%. Sebaliknya, metode tuning Z-N menghasilkan respons yang sangat agresif; meskipun settling time lebih cepat (30-40 detik), lonjakan maximum overshoot untuk kontrol P, PI, dan PID secara berturut-turut mencapai 20%, 51,1%, dan 91,1%. Berdasarkan analisis perbandingan tersebut, disimpulkan bahwa kontrol PI existing memiliki performa yang paling baik, andal, dan stabil dibandingkan hasil tuning Z-N. Parameter kontrol saat ini masih sangat layak untuk dipertahankan sehingga tidak diperlukan tuning ulang pada sistem.
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Fluid level control in Evaporator Tank 06-E-304C at the ZA III Plant of PT. Petrokimia Gresik plays a crucial role in maintaining the smooth operation of the evaporation process and the quality of the Ammonium Sulfate (ZA) fertilizer product. Over time, the dynamic characteristics of the system may shift, making it necessary to evaluate the performance of the current control system. This study aims to compare the transient response performance of the existing PI control with the tuning results using the Ziegler-Nichols (Z-N) method to evaluate whether the system requires retuning. The simulation test results show that the existing PI control (Kp=5.94; Ki=0.0495) yields excellent and stable performance, with a very small maximum overshoot of 4.4%, a settling time of 50 seconds, and a steady-state error of 0%. In contrast, the Z-N tuning method produces a highly aggressive response; although the settling time is faster (30-40 seconds), the maximum overshoot spikes for the P, PI, and PID controls reach 20%, 51.1%, and 91.1%, respectively. Based on this comparative analysis, it is concluded that the existing PI control demonstrates the best, most reliable, and most stable performance compared to the Z-N tuning results. The current control parameters remain highly adequate and should be maintained, meaning no retuning of the system is necessary.
| Item Type: | Monograph (Project Report) |
|---|---|
| Uncontrolled Keywords: | FOPDT, Level, PID, Simulink, Ziegler-Nichols, FOPDT, Level, PID, Simulink, Ziegler-Nichols |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ212 Control engineering systems. Automatic machinery (General) T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control. T Technology > TJ Mechanical engineering and machinery > TJ223 PID controllers |
| Divisions: | Faculty of Vocational > Instrumentation Engineering |
| Depositing User: | Vallen Pangestu |
| Date Deposited: | 05 Aug 2026 05:48 |
| Last Modified: | 05 Aug 2026 05:48 |
| URI: | http://repository.its.ac.id/id/eprint/143879 |
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