Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : MATLAB


Detection Face Parts in Image Using Neural Network Based on MATLAB

Shahad L. Galib; Fouad S. Tahir; Asma A. Abdulrahman

Engineering and Technology Journal, 2021, Volume 39, Issue 1B, Pages 159-164
DOI: 10.30684/etj.v39i1B.1944

Recently, face recognition system (FRS) is implemented in different applications including a range of vital services like airports and banking systems for security purposes. Therefore, deployed surveillance systems have been established which led to the urgent need to develop a vital face recognition system. In this work, a new algorithm was proposed for recognition of the face, personal and color images by training the convolutional neural network using the MATLAB program to build a new program for detection of the face, then building a separate program to discover the lips, nose, and eyes, New methods were explored to analyze the main and independent components to improve face detection, which is considered one of the important techniques in this work using neural networks and implementation through the MATLAB program.

Simulation of Self-Healing in Samawa City Distribution System

Mithaq A. Kadham; Thamir M. Abdul-Wahhab

Engineering and Technology Journal, 2020, Volume 38, Issue 11, Pages 1692-1705
DOI: 10.30684/etj.v38i11A.1663

Self-healing is the ability of a distribution system to automatically restore power after permanent faults. This paper investigates the impact of outages in the distribution network elements following the occurrence of a fault. The work aims to restore maximum available power to consumers in the affected areas, after the isolation of faulted parts, by optimal procedure of switching operations. In this work, CYMDIST software was used for the simulation and analyses of a distribution network in Samawa City. MATLAB 2017b/Simulink was used to implement self-healing, through the simulation of smart protection system that is controlled remotely by a central control unit. The results of implementing the proposed self-healing system on Samawa a New 11 kV network show a maximum power restoration with a minimum number of switching operations that have been achieved after fault isolation without violating constraints.

Dental X-Ray Based Human Identification System for Forensic

M.S. Croock; S. Dh. Khudhur

Engineering and Technology Journal, 2017, Volume 35, Issue 1, Pages 49-60

Forensic dentistry is an important branch of the forensic science. It is based on the dental characteristic. This method uses the dental features as a biometric tool to identify persons, who their bodies have been affected badly. In the other meaning, the dental biometrics are considered at the absence of tools, such as, DNA, fingerprint, iris etc. for different reasons. This paper presented a biometric system for forensic human identification based on dental X-ray. The aim of this system is to build a database, which contain ante-mortem dental radiograph features (AM), used later for matching with the post-mortem dental radiograph features (PM). These features are Standard Deviation (STD), Euler number and Area extracted from X-ray image of type bite-wing. The investigated X-Ray image goes through three stages algorithm which are: image segmentation, classification and features extraction. The obtained features represents the records of the system database for each tooth individually in distinct person. The proposed system utilizes the Graphical User Interface (GUI) provided from the Visual Studio with the usage of MATLAB software for feature extraction and the SQL Server 2012 environment for database building. The Achieved results show the outperformance of the proposed system in terms of matching and searching accuracy as well as the finding time. In addition the editing and insertion processes are performed in high accuracy and efficiency.

Edge Detection and Features Extraction for Dental X-Ray

Muayad Sadik Croock; Saja Dheyaa Khudhur; Ali Kamal Taqi

Engineering and Technology Journal, 2016, Volume 34, Issue 13, Pages 2420-2432

Recently, the dental X-Ray images have been used in different applications, particularly in the forensic field. The researchers focuses on the separation of the underlying teeth individually to obtain their features. These features can be utilized as a key solution for the identifications. In this paper, an edge detection of the involved teeth is proposed using a three stages MATLAB algorithm based on different methods such as, CLAHE, Canny, Otsu's, and 8-Connectivity. In addition, the proposed algorithm extracts the features of the investigated teeth as an exported file. These features are Standard Deviation (STD), Euler number and Area which are extracted from the bite-wing images. The stages of the proposed algorithm are image segmentation, classification and features extraction. It is important to note that the missing teeth has been considered in case of appearance. The missing teeth are assumed to be a separated objects. This is to overtake the problem of missing teeth after registering the original ones in the stored database used for identifications. The obtained results show the clear outperformance of the proposed algorithm in terms of edge detection and features’ extraction. The missing teeth in an image are tested and the achieved results presents the detection and features of such teeth dramatically. The proposed system is implemented and tested in the MATLAB software environment using a personal computer of a Core(TM) i7 processor and 6 GB RAM over a 64-Windows 10 operating system.

Finite Element Analysis of Suppression the Vibration of Dish Using Closed Loop Control System

Nahedh Mahmood Ali

Engineering and Technology Journal, 2016, Volume 34, Issue 8, Pages 1499-1513

A closed loop simulation is used for minimizing of undemanding vibration caused in the dish system. The finite element method is used to model the closed loop control via ANSYS- APDL. In this paper the Bezier function for surface modeling to get the best modeling points for dish is used. A designed surface is represented by sufficient control points, using these control points, the surface has been represented depending on Bezier technique to generate reliable and near-optimal dish surface. The required equations are generated to apply the surfaces and curves efficiently using MATLAP program, then exported to ANSYS to perform closed loop vibration analysis. It can be concluded that the closed loop control system with gain (Kp=4, Ki=1, Kd=0.1) suppression the vibration of the dish with 98% with different thickness and materials of dish. Also the natural frequencies and the mode shapes of the dish is evaluated. Three materials (pure copper, pure aluminum and steel) each with different thickness is taken for the dish (0.8, 0.9, 1, 1.1 and 1.2) mm and for each thickness the responses and the natural frequencies are determined for six modes. The effect of the thickness’s variation on natural frequencies for each material was studied. It can be observed that natural frequency is direct proportional with the thickness of the dish.

High Level Implementation Methodologies of DSP Module using FPGA and System Generator

Majid S. Naghmash; Mousa K. Wali; Amar A. Abdulmajeed

Engineering and Technology Journal, 2016, Volume 34, Issue 2, Pages 295-306

This paper presents the high level implementation methodologies of Digital Signal Processing (DSP) module by using the Field Programmable Gate Array (FPGA) andintegrated software environments (ISE) with the System Generator programs. The shortest and efficient paths to design a Xilinx Vertix-4 FPGA using MATLAB, ModelSim, synplify Pro software tools is introduced. The floating point design in MATLAB has been moved to fixed point values using Xilinx DSP system generator software a model based approach associated with assistance software from Mathworks and Synplicity. The obtained result shows an important utilization in FPGAarea.

Design and Implementation of Programmable Multi-Mode Digital Modulator for SDR Using FPGA

Majid S. Naghmash

Engineering and Technology Journal, 2014, Volume 32, Issue 7, Pages 1655-1670

The design of programmable multi-mode digital modulator for software defined radio (SDR) technology using FPGA is developed and investigated in this paper. The system generator from Xilinx and MATLAB tools are used for FPGA design as well as the implementation of the modulator over a Virtex-4 FPGA board. The HDL language on Xilinx ISE is used to generate the bit stream of the modulator algorithms into ADC/DAC device and FPGA board. The modulated signal obtained from MATLAB simulation is evaluated with the tested signal to verify the system functionality. Lastly, the optimally synthesized netlist of the integrated design is downloaded into Xilinx Virtex-4 FPGA MB development board. The verification of DAC output signal via oscilloscope demonstrate the empirical real-time signals similar to the simulated waveforms. Results shows the successfully implementation steps as timing constraint of FPGA is accepted without error. The proposed design is promising to enhance the current and next generation of communication systems with less power consumption compared with conventional design in term of FPGA Slices and Look Up Tables (LUTs) during the implementation process. The improvement in Slices and LUTs produce by ISE project utilization summary is 65% and 79% respectively.

Optimization of Al-Doura Catalytic Naphtha Reforming Process Using Genetic Algorithm

Zaidoon M. Shakoor

Engineering and Technology Journal, 2013, Volume 31, Issue 7, Pages 1276-1296

Optimization of Al-Doura catalytic naphtha reforming process was done using genetic algorithm. The objective of optimization is maximization yield of the aromatics in order to increase the octane number of reformate.
One-dimensional steady-state mathematical model was made to study the effect of feedstock composition, feed temperature, total pressure and hydrogen to hydrocarbon feed ratio on the reformate compositions. Detailed kinetic model was developed to describe the reaction kinetic, the model involving 29 components, 1 to 11 carbon atoms for n-paraffins, 5 to 10 carbon atoms for iso-paraffins and 6 to 11 carbon atom for naphthenes and aromatics with 83 reactions. Using Genetic Algorithm, 186 parameters of the proposed kinetic model were predicted depending on plant results collected over two months from Al-Doura reforming process which located in the south of Baghdad. The validity of the kinetic model was approved by comparing the results of developed kinetic model with the actual process results.
Genetic algorithm was used again to optimize the commercial reforming process depending on reformate compositions. Optimization was carried out in temperature range between 450 to 520°C; total pressure range 5 to 35 bar; hydrogen to hydrocarbon ratio 3 to 8 and by varying the percentage of catalyst for each one of four reactors. Optimization results shows that, it’s possible to increase the aromatics composition in reformate from 63.42 % in actual unit to 70.89 % by changing the design variables and operating conditions.

Design and Implementation of Optimal Multi-rate Digital Down Converter Using MALAB and ModelSim

Hazim Salah Abdalsatar

Engineering and Technology Journal, 2013, Volume 31, Issue 3, Pages 550-562

In this paper, a design and implementation of a digital down converter (DDC) filter for GSM, CDMA, WCDMA is presented. A powerful system design tool, Xilinx System Generator is adopted to simplify the design cycle and increase the productivity. The proposed DDC is composed of three stages of cascaded filters. The maximum operation speed of the Proposed DDC filter is 100MHz. The remaining sub-modules of the DDC, such as the FIR filter, is co-designed using MATLAB FDATool and ModelSim with a tradeoff between the receiving path of requirements, algorithm and hardware implementation complexity. The system has been successfully verified using the MATLAB module and ModelSim. The most important stage in the design is the HDL code generation for implementation phase and results verification.

STATCOM Application on the Iraqi (400kv) Super Grid Network with Power Oscillation Damping(POD) & Proportional Integral (PI) Controller

Raaed Faleh Hassan; Ahmed Wahab Abdul Razzaq

Engineering and Technology Journal, 2012, Volume 30, Issue 10, Pages 1816-1842

Flexible ac transmission system (FACTS) can provide control more than
conventional control and achieve fast control response time, STATCOM is a shunt
FACTS device it is used to voltage control and increase the performance of the system.
In this paper STATCOM is used to improve the voltage magnitude and stability for the
Iraqi (400KV) super grid network byusing MATLAB/SIMULINK. STATCOM is
connected to Iraqi (400kv) super gridnetworkwhich is consisting of twenty four buses,
eleven generators, eleven step up transformers fromeach generator side, twenty step
down transformers from each load side and twenty loads.The loads variation through
the seasons of the year causesdrop voltage on the buses of the network.To return the
voltage to the rated value (400kv) STATCOM is used for this purpose. STATCOM
provides suitable reactive power to the network to compensate the drop voltage on the
buses, in the same time when the STATCOM improves the voltage there are large
oscillations. These oscillations are handled by using power oscillation damping (POD)
and proportional integral (PI) controller with the STATCOM.Each of thepower
oscillation damping (POD) and Proportional integral (PI) controller is connected inside
current regulator of the STATCOM device.The performance of the (POD) and (PI) in
cancelation the oscillations is compared.

Design and Simulation of the Flexible AC Transmission System (FACTS) with Power Oscillation Damping (POD)

Raaed Faleh Hassan; Ahmed Wahab Abdul Razzaq

Engineering and Technology Journal, 2012, Volume 30, Issue 9, Pages 1428-1445

In electrical power systems there are many problems, from these problems voltage drop, over voltage and instability. These problems are solved by using FACTS technology. Flexible AC transmission system (FACTS) can provides better control than conventional control and achieves fast control time response; therefore FACTS controllers play an important role in power system stability enhancement. STATCOM
is a shunt FACTS device which is used for voltage controlling and increasing the performance of the system. In this paper STATCOM is used to improve voltage magnitude and stability of electrical network by using MATLAB/SIMULINK. To show its effectiveness a prototype of electrical network has been chosen which consists of five buses, three generators and four loads. Simulation results show a robust improvement in network with STATCOM. If a three phase to ground fault occurs
between buses (3&4) there are oscillations after clearing fault. To reduce these oscillations power oscillations damping (POD) has been proposed with STATCOM. Simulation results show that an enhancement of the network prototype with proposed controller (STATCOM- POD).