Ashiddiqi, Muhammad Roy (2021) Desain Dan Implementasi Tuning Cascade PID Pada Heat Exchanger Tipe Shell-Tube. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Heat Exchanger (HE) merupakan unit operasi yang banyak digunakan dalam
industri pengolahan minyak dan industri proses. Diantara berbagai HE, HE tipe
Shell dan Tube (STHE) dikenal sebagai jenis yang paling umum digunakan di
industri. Studi tentang desain STHE telah dilakukan dengan memperhatikan
berbagai macam parameter dan aspek, meliputi parameter termal, fluida, mekanis
dan kontrol, di mana kemudian karakteristik dinamis dari STHE menunjukkan time
constant besar, dead time besar, dan karakteristik yang dipengaruhi perubahan
disturbance pada manipulated variable inner loop. Dalam hal ini, kontrol PID
bertingkat atau yang biasa disebut kontrol cascade, yaitu terdiri dari kontroler
primer dan sekunder berturut-turut untuk mengendalikan suhu outlet shell dan laju
aliran tube, dapat digunakan untuk mengatasi perubahan gangguan pada
manipulated variable inner loop STHE. Oleh karena itu, pada penelitian ini
dilakukan rancang bangun sistem kontrol pada simulator STHE kemudian
dilakukan desain tuning kontrol cascade. Karakteristik heat exchanger pada
simulator STHE diamati untuk mengetahui hubungan antara laju aliran terhadap
perubahan temperatur. Optimisasi Algoritma Duelist (DA) digunakan untuk
menentukan parameter tuning (Kp1, τi1, τd1, Kp2, τi2, τd2) pada kontroler primer dan
sekunder. Fungsi obyektif pada metode tuning DA yaitu meminimalkan Integral
Absolute Error (IAE). Hasil penelitian ini menunjukkan bahwa metode tuning DA
pada simulasi kontrol cascade mampu mencapai IAE minimum jika dibandingkan
dengan metode tuning Lee, Alfaro, Visioli dan Jeng. Implementasi metode tuning
DA pada simulator STHE menunjukkan performa control yang stabil dan mampu
mengatasi perubahan setpoint dan perubahan disturbance.
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Heat Exchanger (HE) is an operating unit that is widely used in the process and oil
processing industries. Among various HEs, Shell and Tube HE (STHE) is
considered the most intensively used in industries. The study of STHE design has
been carried out by considering various parameters and aspects, including thermal,
fluid, mechanical and control parameters, where the dynamic characteristics of
STHE show a large time constant, a large dead time, and is affected by the
disturbance changes in the manipulated variable of inner loop. In this case,
multilevel Proportional, Integral and Derivative (PID) control or commonly called
cascade control, which consists of the primary and the secondary controller
controlling the shell outlet temperature and tube flow rate, respectively, can be
employed to overcome the disturbance changes in the manipulated variable of
STHE’s inner loop. Therefore, in this study a control system is developed for a home
built STHE simulator and a design of cascade control tuning is proposed. The heat
exchanger characteristics in the STHE simulator were observed to determine the
relationship between flow rate and temperature changes. The Duelist Optimization
Algorithm (DA) was used to determine the tuning parameters (Kp1, τi1, τd1, Kp2, τi2,
τd2) on the primary and secondary controllers. The DA objective function was to
minimize Integral Absolute Error (IAE). The results indicate that the DA tuning
method on the STHE cascade control system is capable of achieving the minimum
IAE as compared to other tuning methods reported in literature, i.e. Lee’s, Alfaro’s,
Visioli’s, and Jeng’s tuning algorithm. The implementation of the DA tuning on the
STHE simulator leads to a stable control performance and the cascade control
system is able to follow set point and disturbance change.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Heat exchanger, cascade control tuning, Duelist Algorithm, tuning kontrol cascade, Algorithma Duelist (DA) |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control. T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers T Technology > TJ Mechanical engineering and machinery > TJ223 PID controllers |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30101-(S2) Master Thesis |
| Depositing User: | Muhammad Roy Ashiddiqi |
| Date Deposited: | 23 Jun 2021 09:13 |
| Last Modified: | 20 May 2024 07:22 |
| URI: | http://repository.its.ac.id/id/eprint/84250 |
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