Perancangan Active Fault Tolerant Control Akibat Kesalahan Sensor Dan Aktuator Pada Sistem Pengendalian Level Light Gas Oil (LGO) Stripper Unit Fuel Oil Complex I PT. Pertamina (Persero) RU IV Cilacap

Marsellina, Ria (2016) Perancangan Active Fault Tolerant Control Akibat Kesalahan Sensor Dan Aktuator Pada Sistem Pengendalian Level Light Gas Oil (LGO) Stripper Unit Fuel Oil Complex I PT. Pertamina (Persero) RU IV Cilacap. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Performansi sistem pengendali tidak lepas dari kinerja instrumennya seperti sensor dan aktuator. Seringkali, sensor dan aktuator mengalami kesalahan operasi. Kesalahan dapat diperbaiki dengan melakukan perancangan active fault tolerant control (AFTC). Pada penelitian ini, dilakukan perancangan AFTC. Pertama, dilakukan pemodelan sistem terdiri dari pemodelan plant, aktuator, dan sensor dilanjutkan merancang kontroler konvensional, kemudian merancang observer sensor dan aktuator dengan gain observer sensor dan aktuator didapatkan dari perhitungan numerik linear matrix inequality (LMI). Terakhir merekonfigurasi sinyal pengendali. Dilakukan tiga jenis pengujian kesalahan untuk melihat performansi rancangan AFTC, yaitu uji sensor, uji aktuator, dan uji sensor – aktuator. Jenis uji kesalahan yang diberikan berupa lost of effectiveness dan kebocoran untuk aktuator serta bias, noise, dan sensitivitas untuk sensor. AFTC memiliki performansi jauh lebih baik dalam mengatasi kesalahan dibandingkan dengan pengendalian konvensional. Terbukti pada uji sensitivitas 90% untuk sistem pengendalian konvensional memiliki nilai parameter maximum overshoot 11,49%, maximum undershoot 0%, error steady state 11,11 %, dan settling time 5232 detik, sedangkan sistem pengendali dengan algoritma AFTC memiliki nilai maximum overshoot 0,06%, maximum undershoot 0%, error steady state 0 %, dan settling time 4548 detik. Namun untuk uji sensor – aktuator, kedua observer tidak dapat bekerja karena proses rekonfigurasi sinyal pengendali yang berjalan pada waktu yang sama. ========================================================================================= Performance of control systems can not be separated from the performance of instruments such as sensor and actuator. Often, sensor and actuator experienced fault operation. Fault can be repaired by designing active fault tolerant control (AFTC). In this study, carried out the design of AFTC. First, the modeling system consists of plant modelling, actuator modelling, and sensor modelling, then continued by designing a conventional controller, then design the observer sensor and actuator which gain observer sensor and actuator is obtained from a numerical calculation of linear matrix inequality (LMI). The last, reconfigure the signal controller. There are three types of fault test to see the performance of design AFTC, the test of sensor, test of actuator, and test of sensor - actuator. The type of fault test is given in the form of lost of effectiveness and leakage to actuator, bias, noise, and sensitivity to sensor. AFTC has much better performance in dealing with fault compared with conventional control. Proven in test sensitivity of 90% for the conventional control system has a parameter value 11.49% for maximum overshoot, 0% for maximum undershoot, 11.11% for steady state error, and 5232 seconds for settling time, while the control system with algorithms AFTC has 0.06% for maximum overshoot, 0% for maximum undershoot, 0% for error steady state, and 4548 seconds for settling time. But, to test the sensor - actuator, both of observer can not work, due to the reconfiguration of the control signal that runs at the same time.

Item Type: Thesis (Undergraduate)
Additional Information: RSF 629.89 Mar p
Uncontrolled Keywords: active fault tolerant control; linear matrix inequality; sensor; aktuator; observer
Subjects: H Social Sciences > HD Industries. Land use. Labor > HD28 Management. Industrial Management
Divisions: Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User: Mrs Anis Wulandari
Date Deposited: 16 Jun 2017 04:21
Last Modified: 27 Dec 2018 02:48
URI: https://repository.its.ac.id/id/eprint/41719

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