اخبار القسم en
Lecturer Academic in the Department of Control Engineering and Systems publishes a common scientific research in a global journal Scopas Journal in Malaysia
Asst professor Dr. Salim Khalefa Kazem has published a common scientific research with a many of researchers entitle is:- Numerical Investigation on the Effect of Blood Flow Induced Vibration on Bileaflet Artificial Heart Valve by Using Fluid Structure Interaction Technique .
ABSTRACT:
Surgeries for replacement of artificial heart valves became more common and frequently used because of artificial heart valve failure. Determining the reason of the failure and finding suitable solutions require deep knowledge about artificial heart valve behavior and operation. The reasons of valve failure are related to the patient’s body and the valve design. The compatibility of the valve to a human body is associated with the dynamics of blood flow and the materials used to manufacture the valve. When blood flows through the arteries and valves, blood exerts forces at the valve components, thereby causing flow-induced vibration, which may damage the valve. In this study, fluid–structure interaction techniques to computational fluid dynamics analysis were used to investigate the effects of vibrations occurring via computer simulation. To obtain the optimal design of shear stress, the shear stress of the connection pin of an artificial heart valve were calculated and compared with the shear stress of the connection pin in the literature. At Reynolds number of 250, the excitation frequencies increased from 94.24 rad/sec to 126.9 rad/sec, which resulted in a 75% increase in shear stress values at the connection pin valve at a fully closed angle of 85°. The increase in frequency may cause resonance phenomenon, which will cause damage to the artificial heart valve components. Consequently, the blood components will also be damaged, thereby causing an increase in blood clogging occurrence downstream of the artificial heart valve.
Department of Engineering and Control Systems congratulates a lecturer academic after getting a certificate of doctorate from outside Iraq
Lecturer academic Dr. Tahgreed M. Mohammed Ridha who is working in control systems engineering department has got a PhD certificate from University of Ecole Centrale De nantes France as titled in :- " Automatic Glycemia Regulation of Type I Diabetes "
Abstract :-
This thesis investigates closed-loop control for glycemia regulation of Type 1 Diabetes Mellitus (T1DM). Two maincontroller categories are designed: non-model-based and model-based. To test their efficiency, both types are tested in silico on two T1DM simulators.The first is a long-term model that is derived from clinical data of T1DM subjects and the second is thewell-known Uva/Padova simulator. Firstly, Model-free Control (MFC)is designed: a variable reference intelligent Proportional(iP) control and a constant reference intelligent Proportional-Integral-Derivative (iPID). Better overall performance is yielded with iPID over iP and over a classic PID. Secondly, a positive Sliding Mode Control SMC is designed for the first time for glycemia regulation.The model-based controller is chosen for glycemia regulation due to its well-known robustness properties.More importantly, our main contribution is that SMC is designed to be positive everywhere in the positivelycinvariant set for the plasma insulin subsystem.Finally, a positive state feedback controller is designed for the first time to regulate glycemia. The largest Positively Invariant Set (PIS) is found. Not only control positivity is respected but rather a tight glycemic control is achieved. When the system initial condition belongs to the PIS, hypoglycemia is prevented, otherwise future hypoglycemia is predicted for any initial condition outside the PIS.
Lecturer academic from Department of Control Engineering participates in scientific research at an international conference
Asst professor Dr. Salim Khalifa Kadhim has participated in the an International Conference in Malaysia entitled: " Numerical investigation on effect of leaflet thickness on structural stresses developed in a bileaflet mechanical heart valve for its sustainable manufacturing " .
Abstract. :-
Flow induced structural stresses can cause mechanical prosthetic aortic valve to fail due to yielding. In this study, we have performed the structural analysis, especially the effect of leaflet thickness on equivalent stresses developed in a Bileaflet mechanical heart valve (BMHV) due to blood flow through it has been investigated. The leaflet thickness varies from 0.5mm to 0.7mm, by 0.1mm. A fluid-structure interaction approach based on Arbitrary Lagrangian Eulerian (ALE) technique has been employed with the aid of a user defined function (UDF). Results of the analysis show that high von Mises stresses are developed in BMHV with leaflet thickness of 0.5mm and 0.6mm, being 75% and 13% higher than allowable equivalent stress respectively. Such thinner leaflets are therefore, not sustainable to be replaced with diseased aortic valve.
Head of department welcomes for freshman year on 2017/2018
Control and Systems Engineering department has held ceremony of welcoming for the students of freshman year on 2017/2018 .Attended by head of department Asst professor Dr. Azad Rahim Karim in order to as Asst professor head of the department for Administrative Affairs with members of heads of branches of department .Head of the department has welcomed in students of into the all branches and wished them success and progress . after that Dr. Ahmed Ibrahim, the administrative assistant has presented a brief overview about the control and systems engineering of department .As well as the review of all instructions and respect for the dates of lectures and maintain the cleanliness of the Department and the need to maintain the means and educational devices and wish to prosperity and success in building their homeland through the fields of science and the advances and knowledge .
Lecturer Academic in the Department of Control and Systems engineering publishes scientific research in
the Journal of Engineering at University of Baghdad
Lecturer academic Dr. Safana Mudher Rafaat who is working in the Department of Engineering Control and Systems has been published scientific of research in the Journal of engineering at the University of Baghdad as titled in : -
Enhanced Performance of Consensus Wireless Sensor Controlled System via Particle Swarm Optimization Algorithm Abstract:-
ABSTRACT:-
This paper describes the application of consensus optimization for Wireless Sensor Network(WSN) system. Consensus algorithm is usually conducted within a certain number of iterations for a given graph topology. Nevertheless, the best Number of Iterations (NOI) to reach consensus is varied in accordance with any change in number of nodes or other parameters of graph topology. As a result, a time consuming trial and error procedure will necessary be applied to obtain best NOI. The implementation of an intelligent optimization can effectively help to get the optimal NOI. The performance of the consensus algorithm has considerably been improved by the inclusion of Particle Swarm Optimization (PSO). As a case study, variable number of nodes in a network with a random graph topology has been considered. Simulation results show that significant reduction in the NOI and power consumption has been achieved, where it decreased the NOI about 40 iteration; when using PSO for different number of nodes in the specified network..
Lecturer Academic in the Department of Control and Systems Engineering publishes scientific research
about Medical Haptic Control System
Lecturer academic Dr. Safana Mudher Rafaat who is working in the Department of Engineering Control and Systems has been published in collaboration with another researcher, a common scientific research in the Journal of Science and Technology at the University of Technology as titled in : -
Robust Controller Analysis and Design of Medical Haptic Control System
-:Abstract
Haptic interfaces for medial simulation prove to be especially useful for training in minimally invasive procedures. In this research, a framework that consists of relevant representation of operator and environment dynamic of a tele-manipulated haptic system is implemented. The uncertainty model of the operator and environment models is considered as well to study the influence on the aspects of stability and performance. The framework of H∞ loop shaping robust controller design is applied, then the stability and performance analysis is investigated. Parametric robust control design method is used as well for comparison. The v-gap metric is considered to develop an accurate measurement of uncertainty. Based on the obtained value of the v-gap an efficient procedure of robust control design is applied. The obtained values of v- gap were 0.1112 for the master and 9.755*10-4 for the slave parts of the haptic system, which indicate improved robustness of stability and performance as compared with the obtained values from parametric robust controller design.
Mr. President University of Technology bestows a lecturer academic the letter of thanks and appreciation
within Department of Control and Systems Engineering
Dr. Bushra Khadem Alawy has got a letter thanks and appreciation by Mr. President the University of Technology a Professor Dr. Amen Dayay Thamer , as result from her significant efforts through well done in scientific researches and published in global journal .
Finally we congratulates about her achievement and much more progress and creativity and best effort for raising our great country and beloved Iraq.
Arabian Journal for Science and Engineering Publishes Search for a Lecturer within Department
Asst Professor Dr. Omar Farouk Lutfy who is working within a staff in control and System engineering department has been published a search in “Arabian Journal for Science and Engineering “.Through average impact factor 8.5 that is considered a global journal in this field within Thomson Reuters Corporation in titled as:-
“Adopted Direct Inverse Control Scheme Utilizing a Global Best Artificial Bee Colony to Control Nonlinear System”.
A lecture in the department of control publishes scientific research on the use of fluid dynamics to simulate blood flow and stress
Dissertation in the department of control and systems engineering Assist .Prof .Dr. Saleem Khalefa Kadhim , with a group of researches , published a joint scientific research in a global journal with an influence factor (IF=0.767) under the (ISI) classification entitled :
(Computational Fluid dynamics of blood flow profile and shear stresses in bileaflet Mechanical heart valve by using monolithic approach )
A lecture from the Department of Control and Systems Engineering publishes joint scientific research in a
research in a global jour
Assist .Prof .Dr. Salim Khaleifah Kazem published a joint scientific paper published in the journal of physics, under the Scopas Thomson Reuters classification (Structural stresses developed in a bileaflet mechanical Heart valve Numerical investigation on effect of aortic root geometry on flow induced
More...
The Department of Control and Systems Engineering awards a master's degree in the development of the path planning algorithm
Asmaa Abdul Latif Hussain from the Department of Control and Systems Engineering at the University of Technology has gained the master's degree in "Developing the Path Planning algorithm Based on the Human Position of Human Position" with a grade of excellence.
The discussion committee consisted of Dr. Ahmed Sabah Al-Araji as Chairman
Dr. Saad Abdel-Reda Mekki and Dr. Ahmed Khalaf Hamoudi, members of Dr. Firas Abdul Razzaq Rahim ( supervisor ) .
Abstract:
In this thesis,a modified derivation of C-space construction analysis was introduced, which effective tool in robot path planning. This construction is based on geometrical analysis for some of basic, regular shape obstacles in the robot environment. A * path planning algorithm was applied on the C-space map. Then D * algorithm, which has better behavior than the first method, was applied. From both methods, the shortest path was obtained that is free from any collision with obstacles. For an optimal path, the D* path was used with PSO algorithm and was implemented on C-space after the latter's map was defined using the Artificial Neural Network (ANN) for an accurate description of the collision zones. The algorithms that applied on C-space map were demonstrated by modeling and practical results.
The Department of Control and Systems Engineering gives the Master for Performance Comparison
The student (Abdullah Ali Mohammed) from the Department of Engineering Control and Systems at the University of Technology has been given the master's of degree with a very good grade for his thesis ( Comparing the performance of four different notes ) .The discussion committee consisted of Dr. Shibli Ahmed Humaid as Chairman and Dr. Safana Rahat and Dr. Sami Kazem Hassan and Dr. Amjad Jalil Hamidi Supervisor ) .
Abstract: -
The aim of the work is to study the robust characteristic and performance of four different observers when applied to estimate the states of two underactuated mechanical systems (Rotary Inverted Pendulum and Pendubot). This work has invoked four observation techniques for state estimation which are nonlinear extended state observer (NESO), Linear Extended State Observer (LESO), High gain observer (HGO) and Extended State Observer (ESO). Four conditions have been considered to assess the performance of observers; nominal condition, disturbance application condition, noise injection condition and uncertainty perturbation condition.Based on these conditions, the performance of observers are evaluated and quantified in terms of their tracking characteristics and the minimum variance of estimation error they produce.
Studying Master Thesis in the Department of Control and Systems Engineering of Type Two Fuzzy Logic Kinematic Controller for Trajectory Tracking of Mobile Rob
The student (Mustafa Yousef Abbas) has gained a master's degree (very good) for his thesis (Two Fuzzy Logic Kinematic Controller for Trajectory Tracking of Mobile Robot ) . has Presented to the control branch in the Department of Engineering Control and Systems on Wednesday, 25-10-2017 And on the postgraduate hall at the department .
Abstract: -
In this work, a trajectory tracking control for a differential wheeled mobile robot (WMR) system is presented.A big number of investigations have been used the kinematic model of mobile robot which is a nonlinear model in nature. This work focuses on the design a three types of fuzzy controller, the first is fuzzy like PD+I, fuzzy like PI+PD, and Interval Type-2 fuzzy like PI+PD controllers, with a firefly optimization to find the best values of controllers parameters. Matlab Simulation results show a good performance and robust of an Interval Type-2 fuzzy controller with respect to the other type-1 fuzzy controller, by minimizing tracking error and smooth velocity, especially with presence an external disturbance or uncertainty.
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Acknowledgment
Professor Dr. Amin Dauai Thamer , President of the university of Technology , honored a letter of thanks and appreciation to Asst. Prof. Dr. Ahmed Sabah Al-Araji ,Head of Mechatronics Engineering Department ,Department of Control and Systems Engineering 22nd /10l2017 for outstanding efforts in carrying out and publishing researches according to the mechanism of the university of technology .
