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.
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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: | Anis Wulandari |
| Date Deposited: | 16 Jun 2017 04:21 |
| Last Modified: | 27 Dec 2018 02:48 |
| URI: | http://repository.its.ac.id/id/eprint/41719 |
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