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Development of the PD/PI Extended State Observer to Detect Sensor and Actuator Faults Simultaneously Katherin Indriawati; Trihastuti Agustinah; Achmad Jazidie
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 2: EECSI 2015
Publisher : IAES Indonesia Section

This paper discusses about an observer based faultdetection scheme to detect sensor and actuator faultssimultaneously in LTI system. The proposed strategy is to addderivative action on the extended state observer (ESO) in additionto proportional-integral action, so that the structure of theproposed observer is PD/PI or called PD/PI-ESO. The derivativeaction is performed both in state estimation and fault estimation.This is to achieve fast state estimation as well as fast faultestimation. Furthermore, the effects of disturbance are attenuatedby using the H performance approach. The observer gains arethen determined based on Linear Matrix Inequalities (LMI)technique. Simulation results of a DC motor speed control systemare presented to illustrate the effectiveness of the proposed method.

Design of PID Disturbance Observer for Temperature Control on Room Heating System Yoga Alif Kurnia Utama; Yulius Hari
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 4: EECSI 2017
Publisher : IAES Indonesia Section

Heat is one of an energy form that can move from a high temperature to a low temperature. This will strongly make the temperature outside of the room affect the temperature in the room. Therefore, the temperature in the room becomes unstable. That is a problem for room heating system which requires a stable indoor temperature output. Because of that reason, so the system needs temperature control method that can reject disturbance that derived from the outdoor temperature. This research will propose a solution that is the use of PID Disturbance Observer (PID-DOB) method for resolving that problem. The tests that we carried out is comparing the PID controller and PID-DOB by simulation with four variation temperature and calculating the performance index by using integral time absolute error (ITAE) criteria. The result showed that the ITAE average for PID is 10.51 and PID-DOB are 1.78. This result showed that PID-DOB controller can be used as temperature control which resists to the varied temperature outside the room.

Adaptive-Fuzzy-PID Controller Based Disturbance Observer for DC Motor Speed Control Zulfatman Has; Ahzen Habibidin Muslim; Nur Alif Mardiyah
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 4: EECSI 2017
Publisher : IAES Indonesia Section

DC motors are one of the most widely used actuators in industry applications. In its use, the reliability of DC motor performance becomes an important prerequisite that must be met. Therefore, a control scheme is required to meet the above performance demands, especially in the transient, steady state, and system stability aspects. The main problems in DC motor control system, especially in terms of speed control, are the occurrence of changes in system parameters and the presence of disturbances such as load changes. This study offers an Adaptive- Fuzzy-PID (AFPID) control scheme equipped with Disturbance Observer (DOb). AFPID scheme plays a role in handling the change of system parameters, while DOb serves to estimate the occurrence of disturbance. The AFPID control scheme was verified experimentally on a DC motor test-rig that was subjected to load-bearing disturbance. The results of the experiments show that the AFPID control scheme with DOb has a better transient response performance than AFPID without DOb, as well as in the ability to compensate the load changes. The combination of AFPID with DOb offers a more stable performance to DC motor has and is more insensitive to disturbance.

BLE OBSERVER DEVICE MENGGUNAKAN RASPBERRY Pi 3 UNTUK MENENTUKAN LOKASI BLE BROADCASTER Al Azam, Moh. Noor; Anindito, Benediktus
Prosiding SNATIF 2016: Prosiding Seminar Nasional Teknologi dan Informatika
Publisher : Prosiding SNATIF

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstrak Penggunaan Bluetooth Low Energy (BLE) digunakan dalam layanan berbasis lokasi atau Location Based Services (LBS) di dalam ruangan -baik dalam format connected topology (CT) maupun broadcast topology (BT). Dalam format CT, peripheral device akan ditempatkan dalam tempat yang statis sementara central device (seperti smartphone) akan menterjemahkan data-data yang diterima dari peripheral device tersebut menjadi koordinat dimana dia berada saat itu. Sedangkan dalam format BT, BLE broadcaster lebih banyak diposisikan sebagai perangkat yang bergerak dan observer device cenderung berada dalam tempat yang statis -yang harus menterjemahkan BLE broadcaster yang mendekatinya dan mengambil sebuah keputusan. Pada penelitian ini digunakan Raspberry Pi 3 -yang sudah embedded BLE, sebagai observer device dan Cubeacon sebagai BLE broadcaster serta sebuah server sebagai pencatat posisi BLE broadcaster berada. Dari ujicoba yang dilakukan, penggunaan Raspberry Pi 3 dan Cubeacon dapat memberikan penentuan lokasi sampai dengan jarak kurang dari 1 meter sampai dengan maksimal 5 meter dari lokasi BLE broadcaster berada. Kata kunci: Beacon, Bluetooth Low Energy (BLE), Bluetooth Smart Ready, proximity, RSSI

New Model Reference Adaptive System Speed Observer for Field-Oriented Control Induction Motor Drives Using Neural Networks Hossein Rahimi Khoei; Mahdi Zolfaghari
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

One of the primary advantages of field-oriented controlled induction motor for high performance application is the capability for easy field weakening and the full utilization of voltage and current rating of the inverter to obtain a wide dynamic speed rangeThis paper describes a Model Reference Adaptive System (MRAS) based scheme using Artificial Neural Network (ANN) for online speed estimation of sensorless vector controlled induction motor drive. The proposed MRAS speed observer uses the current model as an adaptive model. The neural network has been then designed and trained online by employing a back propagation network (BPN) algorithm. The estimator was designed and simulated in Matlab/Simulink. Simulation result shows a good performance of speed estimator. The simulation results show good performance in various operating conditions. Also Performance analysis of speed estimator with the change in resistances of stator is presented. Simulation results show this estimator robust to parameter variations especially resistances of stator.

Full Order Observer Based Control of Single-Phase Inverter Both in Standalone and Gridtie Modes Nagulapati Kiran
Bulletin of Electrical Engineering and Informatics Vol 5, No 4: December 2016
Publisher : Institute of Advanced Engineering and Science

In 3-phase systems, the reliability of 3-phase Inverter is not good. In such situations Paralleled Inverter Systems are used. Parallel Inverter operation has a major topic in uninterruptible power system (UPS) applications where the design is focused on the standalone operation, and output stage is typically an inductor-capacitor filter. Most of the standalone inverter systems use a LC filter and proportional-integral (PI) controller in their control loops. When connecting the paralleled inverters to utility grids, the capacitor becomes redundant and thus either a pure inductor or an LCL filter can be used as inverter output stage. Compared with the L filter, the LCL filter is more attractive because it cannot only provide higher harmonics attenuation with same inductance value, but also allow inverter to operate both in standalone and grid-tie modes, which makes it a universal inverter for distributed generation applications. Output of Inverter should always be checked. In this paper, a full order observer for Inverter System is designed and is used for estimation of State Variables of the Inverter System. Two modes are adopted: a) Grid-tie Mode b) Standalone Mode. MATLAB/Simulink is used to verify and validate the proposed idea.

Sybil Node Detection in Mobile Wireless Sensor Networks Using Observer Nodes Mojtaba Jamshidi; Milad Ranjbari; Mehdi Esnaashari; Nooruldeen Nasih Qader; Mohammad Reza Meybodi
JOIV : International Journal on Informatics Visualization Vol 2, No 3 (2018)
Publisher : Society of Visual Informatics

Sybil attack is one of the well-known dangerous attacks against wireless sensor networks in which a malicious node attempts to propagate several fabricated identities. This attack significantly affects routing protocols and many network operations, including voting and data aggregation. The mobility of nodes in mobile wireless sensor networks makes it problematic to employ proposed Sybil node detection algorithms in static wireless sensor networks, including node positioning, RSSI-based, and neighbour cooperative algorithms. This paper proposes a dynamic, light-weight, and efficient algorithm to detect Sybil nodes in mobile wireless sensor networks. In the proposed algorithm, observer nodes exploit neighbouring information during different time periods to detect Sybil nodes. The proposed algorithm is implemented by J-SIM simulator and its performance is compared with other existing algorithm by conducting a set of experiments. Simulation results indicate that the proposed algorithm outperforms other existing methods regarding detection rate and false detection rate. Moreover, they also showed that the mean detection rate and false detection rate of the proposed algorithm are respectively 99% and less than 2%.

Aircraft Pitch Control Design using Observer-State Feedback Control Arrosida, Hanum; Echsony, Mohammad Erik
Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Vol 2, No 4, November-2017
Publisher : Universitas Muhammadiyah Malang

Pitch is a movement of an aircraft achieved by tilting the elevator control which makes the nose of aircraft ascend or descend. This research will design a control system that controls the slope of the x-axis or pitch with the observer-state feedback to keep the aircraft always in the position setpoint, the stabilization of the pitch angle at the value of 0 radians. The applied controller is tested under three different conditions based on the variation of the gain value of Q and R that will affect the observed gain matrix (L gain) and the matrix state-feedback gain (K gain). The variation with the gain value of Q = 10 and R = 0.1 is the best result of the three kinds of testing performed with the fastest stabilization processing time, that is 7 seconds, to reach a steady state condition and the minimum pitch angle deviation value is 0.08 radians. The use of the observer has a significant influence on the pitch angle deviation of the aircraft. When using the observer, the pitch angle deviation value is 0.08 radians, and 0.2 radians without the observer. The larger result of pitch deviation angle will affect the stability of the aircrafts motion and cause the slope of the movement on the x-axis become greater so that the aircraft is prone to fall.

Sistem Kendali Kecepatan Motor pada Mobile Robot Menggunakan PID dan Analisis Disturbance Berbasis Disturbance Observer Bayu Sandi Marta; Indra Ferdiansyah; Fernando Ardila
Jurnal Teknologi Terpadu Vol 6, No 2 (2018): JTT (Jurnal Teknologi Terpadu)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v6i2.461

Mobile robot's ability to maintain its speed is very important. When the robot is running and there is disturbance from outside system that affect the robot, causing the speed of the robot becomes unstable. For it is necessary to add a mechanism that is able to make the robot keep pace, one of them by giving control. This research will be built a speed control system on a mobile robot. The speed control system aims to improve performance and stability robot speed by minimizing the effect of unmeasured disturbances from outside the robot eg mechanical changes such as granting a load that can cause changes in the behavior of the system so that the necessary arrangements back to the control system. In this control system used control Proportional, Integral, Derivative (PID) and the analysis of disturbance based Disturbance Observer (DOB). PID control functions to improve motor performance robot. While DOB functions to analyze the disturbance from outside robot. The results of the implementation of the Disturbance Observer to PID control produce average root mean square error value of the reference value for the speed of 19.59 rpsfor right motor and left motor is 16.66 rps. While the average root mean square error of the reference value with PID control without Disturbance Observer on the right motor is 24.47 rps and the left motor is 18.89 rps. Keywords :

CPUE TRENDS OF THE INDONESIA’S TUNA LONGLINE FISHERY: LESSONS LEARNED FROM A TRIAL OBSERVER PROGRAM Lilis Sadiyah; Natalie Dowling; Budi Iskandar Prisantoso; Retno Andamari; Craig Proctor
Indonesian Fisheries Research Journal Vol 20, No 1 (2014): (June 2014)
Publisher : Research Center for Fisheries

In an effort to address a shortage of reliable CPUE information, and as a preliminary step to a broader observer program, Indonesia established a Trial Observer Program (TOP) for the industrial tuna long line fishery based at Benoa Fishing Port, Bali, in mid 2005. The objectives of this paper are i) to describe spatial and temporal catch and effort trends from the Indonesian Indian Ocean industrial tuna long line fishery based at Benoa Fishing Port, and ii) to provide an understanding of the fishing strategies used by different companies and of the environmental conditions that may influence catch trends. The observed effort covered areas both north and south of 20°S, with a concentration within 10°-20°S; 105°-120°E which overlaps with the only known spawning grounds of southern bluefin tuna (SBT). This data set showed that SBT comprised the lowest catch proportion, relative to the other three tuna species caught, bigeye tuna (BET), yellowfin tuna (YFT) and albacore (ALB). BET and ALB had been suggested as the main target species for the fishery, but this varied by region. The TOP data set suggests that different tuna fishing companies targeted different species and used different fishing practices, including differences in bait used, areas fished, start time of setting, and the number of hooks between floats (HBF). It is a priority to improve the spatial and temporal coverage of the observer program before the data can be considered to be representative of the fleet, particularly given the high degree of variability in fishing practices between companies.

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