Masters theses : Engineering

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STUDY AND DESIGN OF I)lREC'l‘ MEMORY ~ ACCESS CON'I‘R()LLER
(Al-Neelain University, 2003 - 03) nahal mohammed raheem shannan
Abstract The problem oftime consuming in data transfer in computer-based systems is of great importance, especially in systems that need last response. Computer engineers think ofa device that decreases this time consumption as much as possible, they ﬁnd that the direct memory access concept is one olithe best ways this problem could he solved. The direct memory access controller is a device that allows data to ﬂow directly between thc memory and peripheral devices. thus decreasing the time consumption.
Catalytic Refor ming of Heavy Naphtha of Heavy Naphtha of khar toum Refinery
(AlNEElAN UNVERSLTY, 2004) Al samani Ahmed Mahmoud Salih
Engineering Specifications of Aggregates in Khartoum State for Concrete Mix and Road Design
(ALNEELAIN UNIVERSITY, 2004-07) Farida Mohamed Abdalla
Neuro Fuzzy Concepts and Design (Case Study)
(Neelain University, 2008) Amir Ahmed Mohammed Hassan
Abstract This research presents a comparison between desired and actual trajectory used to adaptive control to robot manipulators which can be used in soldering square shape. In this thesis, the path trajectory obtained using the Adaptive Neuro Fuzzy Inference System (ANF IS) is called the actual path trajectory. ANFIS has two essential parameters; the ﬁrst parameter is the number of fuzzy set, and the second parameter is the number of training. The training data of manipulator used in ANFIS is calculated by forward kinematics for two links worked in two dimensions. The desired path trajectory of manipulator is obtained by inverse kinematics method. Many comparisons can be made between desired and actual path trajectory. The execution of comparisons requires various values for both number of membership function and number of training. Finally, the suitable path trajectory selected by comparison between coirelation coefficients for both desired and actual path trajectory, the difference between desired and actual path trajectory is observed. And all the data used in comparisons are computed by MATLAB and Excel. Results obtained are of good value at number of training equal 75, and number of fuzzy set equal 9.
Neuro Fuzzy Concepts and Design (Case Study)
(Neelain University, 2008) Amir Ahmed Mohammed Hassan
Abstract This research presents a comparison between desired and actual trajectory used to adaptive control to robot manipulators which can be used in soldering square shape. In this thesis, the path trajectory obtained using the Adaptive Neuro Fuzzy Inference System (ANFIS) is called the actual path trajectory. ANFIS has two essential parameters; the ﬁrst parameter is the number of fuzzy set, and the second parameter is the number of training. The training data of manipulator used in ANFIS is calculated by forward kinematics for two links worked in two dimensions. The desired path trajectory of manipulator is obtained by inverse kinematics method. Many comparisons can be made between desired and actual path trajectory. The execution of comparisons requires various values for both number of membership function and number of training. Finally, the suitable path trajectory selected by comparison between correlation coefficients for both desired and actual path trajectory, the difference between desired and actual path trajectory is observed. And all the data used in comparisons are computed by MATLAB and Excel. Results obtained are of good value at number of training equal 75, and number of fuzzy set equal 9.
تطوير وتصميم شبكة عصبية اصطناعية للتحكم الصوتي فينظومة التحكم
(جامعة النيلين, 2008) داليا محمود ادم محمود
Abstract This thesis has two main goals, the ﬁrst goal is development and design artiﬁcial neural network architecture for speciﬁc application which is voice control, in addition to increase network generalization when it deals with new cases, this because human sound is not constant and vary each time he utterances the same word according to his health and emotional state. To achieve this goal, number of feed forward back propagation neural networks was built, and three types of transfer function was used which are Log sigmoid, Hyperbolic tangent sigmoid and Pure Liner to test performance for each of them, the experiences explained that Log sigmoid is much suitable for this application. Also this work follow effective manner in choosing numbers of layer and hidden nodes depending on trail and error but with speciﬁc strategy. The second goal is using the designed neural network to work as commands recognizer in voice control system, this system is a pressure control system which controls on petroleum pipelines and consist of pump, tank and electronic valve. Three experiments was applied to design this system, the designing on ﬁrst experience depend on using isolated commands (Open, Close) and training neural network to recognize it, and then measured performance of the recognizer. The neural network here used log sigmoid for activate layer output and contain two hidden layer, number of nodes in them are 120 and 50 nodes. This design achieve performance ratio 98.5714%. The second designing using commands from two part (Open pump ,Close pump, Open Valve , Close valve ), the neural network used here has 70 nodes and one hidden layer between input and output layer. This design achieve perfonnance ratio 96.67%.The recognizer in last designing used phonemes of command to recognize it, this for make the system more general. The neural network used here has one hidden layer contain 100 nodes. This design achieve performance ratio only 23.3%. The three experiences were designed using MATLAB program, it used also for write preprocessing program which was use to extract word features.
تعويض انظمة التحكم العكسية الخطية : دراسة حالة
(جامعة النيلين, 2008-05) محمد حسن جبارة
Abstract This thesis discusses a case study tor a compensator design tor an antenna position control system. Root locus technique was used interactively in the design process utilizing Matlab and its tools. Ditlierent types of series compensators were used and a suitable PID controller has been implemented " PID compensator is able to achieve both the transient- state and steady - state accuracy for the system, which are crucial to position control systems. The design was subjected to evaluation tests and the results were good.
Neuro Fuzzy Concepts and» Design (Case Study)
(Alneelain University, 2008-07) Amir Ahmed Mohammcdl Hassan
This research presents a comparison between desired and actual trajectory used to adaptive control to robot manipulators which can be used in soldering square shape. In this thesis, the path trajectory obtained using the Adaptive Neuro Fuzzy Inference System (ANFIS) is called the actual path trajectory. ANFIS has two essential parameters; the ﬁrst parameter is the number of fuzzy set, and the second parameter is the number of training. The training data of manipulator used in ANFIS is calculated by forward kinematics for two links worked in two dimensions. The desired path trajectory of manipulator is obtained by inverse kinematics method. Many comparisons can be made between desired and actual path trajectory. The execution of comparisons requires various values for both number of membership function and number of training. Finally, the suitable path trajectory selected by comparison between correlation coefﬁcients for both desired and actual path trajectory, the difference between desired and actual path trajectory is observed. And all the data used in comparisons are computed by MATLAB and Excel. Results obtained are of good value at number of training equal 75, and number of fuzzy set equal 9
Decision in NEC Based on GIS, SPSS And Information System
(Al Neelain University, 2010-04) Rashid Babiker Alhassan
Abstract The study mechanism design database of the National Electricity absorb all the technical information fro m the production, transmission and distribution of electricity and using geographic information systems (GIS) to accommodate the evidence of spatial passenger terminal, transformers, poles and houses for customers was the work done by the program of the (ArcGis9.1) spatial resolution . A search of four chapters, with Chapter One Introduction to Research with an explanation of the problem make a search in addition to the objective of the thesis and also address the usual style of research and finally a summary of the chapters of the research . Chapter II covered the concept of technical information within the National Electricity Corporation, and then deal with software that works within such Al SCADA and program automated meter reading (AMR). Chapter also touched on the importance of linkage between programs and the benefits of them . Chapter III of the study area has been identified with the design of a consolidated database to link all the programs in one base. And then linking them and the work of geographical and other interface in the form of screens and a unilateral plan for the stations was done by designing a plan that aims to link all the programs a unified database and then linked by a statistical analysis program SPSS. Contributing to the operations forecasts and statistical analysis . Chapter IV thesis presented the summary and provide some recommendations for the future
study of ann model and xinanjiang model for flood forecasting in the guanyinqiao catchment
(ALNEELAIN UNIVERSITY, 2010-05) Mohmed Abdallah Mohmed Abdalhi
Abstract Abstract Hydrological modeling of water resources systems has contributed to a great deal of analysis-type knowledge. The understanding of spatial and temporal events has led to a higher degree of conﬁdence in the design of most water resources projects. This research study seeks on how to apply the Artiﬁcial Neural Network rainfall runoff model and Xinanjiang rainfall-runoff model in humid and semi humid catchments of Guanyin Qiao, determines the optimum parameters of the two models used, forecast the real time of peak ﬂood event and evaluate the models acceptability in the catchment. The study area is Guanyin Qiao catchment in Longyan area located at the Western region of Fu Jian province in China, with the total catchment area of 324 Kmz. The daily data from 1992 — 200lwere used and its sets were divided into two groups of data sets, which includes, calibration set and validation set for the two models. The manual calibration processes of the two models were successful and obtained the optimum parameters used in validation processes. The average relative errors for the ANN model and Xinanjiang model were 18.45% and 6,44% respectively, this means that, the average relative errors for the two models have not exceeded the acceptable relative error values, because each ﬂood simulation or forecasting result is acceptable only if the percentage of the peak relative error between simulated and observed ﬂood is less than or equal to 20%. The only one drawback of this study is that, the ANN model is able to make good forecasts in the short lead times of performance, but with increase in the lead times the results deteriorates rapidly. The manual calibration of Xinanjiang model is good for simple model but in long period of year’s calibration and complex model, it’s tedious and affects the accuracy of the parameters. Based on the overall results and the comparative study, the research proved that, the ANN rainfall-runoff model and Xinanjiang rainfall- runoff model applied in this study is more efficient and qualiﬁed to be applied in the Guanyin Qiao catchment and can be categorize in grade B base on the Chinese Standards classiﬁcation (2000). Keywords: ANN model, Xinanjiang model, Flood forecasting, Guanyinqiao Catchment.
Republic of the Sudan El Neelain University College of Graduate Studies Computer Control of Three Phase Induction Motor
(Al Neelain University, 2011) Mohamed Mohyeldin Khalil Alraiah
الهدف من هذا البحث هو تصميم نظام تحكم لمحرك الحث ثيلثيي الطووار باستعمال التقنية الرقمية. نظام التحكم يستعمل في التحكم في السرعة من السرعات المنخفضة جدا الي السرعة المقننة مع عزم ثيابت. محرك الحث ثيلثيي الطووار له متانة عالية, موثيوقية, كلفة منخفضة وكفاءة عالية مما جعله يستعمل في العديد من التطبيقات الصناعية. فعلى الرغم من انه من المحركات ذات السرعة الثابتة حيث يدور فقط بسرعته المقننة عند توصيله بمصدر الطاقة ال ان التطور الكبير في الكترونيات القدرة في السنوات الخييرة جعلت التحكم في سرعته ممكنا. عملية التحكم في السرعة والعزم تتم عن طوريق التحكم في التردد والجهد المسلطان على لفائف العضو الثابت في المحرك حيث يتم ذلك بواسطة استعمال تقنية تضمين عرض النبضة ) PWM .( اشارة ال ) PWM ( يمكن انتاجها عن طوريق الحاسب الشخصي عبر منفذ التوازي, لذلك فان دوائر التحكم المعقدة يمكن استبدالها ببرنامج حاسوب الذي يسمح لخصائص التحكم ان تغير بسهولة, يقلل تكلفة التصنيع, يزيد الموثيوقية ويحسن الصيانة والخدمات. Abstract The aim of this research is to design a control system for a three phase induction motor by using digital technique. The control system is v used to control the speed from very low speed until the rated speed at a constant torque. The three phase induction motor has high robustness, reliability, low cost and high efficiency that mad it used in many industrial application. Although induction motor regards as a constant speed motor that it can only run at its rated speed when its connected to the main power supply, the developments in power electronics over the last years has made speed control possible. The speed and torque control can be done by controlling the frequency and amplitude of the applied stator voltage which can be implemented by the pulse-width-modulation (PWM) technique. The PWM control signals can be generated by the personal computer through the parallel port, so the complex control circuits' hardware can be replaced by computer software which allows control characteristics to be easily changed, reduce manufacturing cost, increase reliability and improve maintenance and servicing الهدف من هذا البحث هو تصميم نظام تحكم لمحرك الحث ثلاثي الاطوار باستعمال التقنية الرقمية. نظام التحكم يستعمل في التحكم في السرعة من السرعات المنخفضة جدا الي السرعة المقننة مع عزم ثابت. محرك الحث ثلاثي الاطوار له متانة عالية, موثوقية, كلفة منخفضة وكفاءة عالية مما جعله يستعمل في العديد من التطبيقات الصناعية. فعلى الرغم من انه من المحركات ذات السرعة الثابتة حيث يدور فقط بسرعته المقننة عند توصيله بمصدر الطاقة الا ان التطور الكبير في الكترونيات القدرة في السنوات الاخيرة جعلت التحكم في سرعته ممكنا. عملية التحكم في السرعة والعزم تتم عن طريق التحكم في التردد والجهد المسلطان على لفائف العضو الثابت في المحرك حيث يتم ذلك بواسطة استعمال تقنية تضمين عرض النبضة (PWM). اشارة ال (PWM) يمكن انتاجها عن طريق الحاسب الشخصي عبر منفذ التوازي, لذلك فان دوائر التحكم المعقدة يمكن استبدالها ببرنامج حاسوب الذي يسمح لخصائص التحكم ان تغير بسهولة, يقلل تكلفة التصنيع, يزيد الموثوقية ويحسن الصيانة والخدمات
A thesis Submitted in partial fulfillment of the requirements for the degree of M. Sc in Agricultural Engineering
(Al Neelain University, 2011) Abd Elbagy Mohamed Hereka
This research had been conducted at mechanized rainfed agriculture sector, Gedarif State (SUDAN), in the period (2007 – 2008) for two consecutive seasons. The objective of this research aimed to study the effect of different tillage treatments on the productivity of Dura. The experiment has been set in the complete randomized block design with four treatments applied, with four replicates. The treatments represented by chisel plough, disc harrow, wide-level disc and zero tillage .The study included effect of different tillage treatments on dura production components: plant height, number of tillers and productivity, also the research included determination of power requirement of the implements studied at different depth. 7 The study showed that the average field capacity was 24.75%, the average bulk density was 1.28 g/cm³, the infiltration rate in the first five minutes was 210 mm/h and the basic infiltration rate was 13.2mm/h in the first season. In the second season the initial infiltration rate 192 mm/h where as the basic infiltration rate was 12 mm/h . The disc harrow treatment registered the highest readings for plant length 97.75 cm, 90.2 cm for the two season respectively, where as zero tillage treatment gave the lowest reading for the plant length 86cm in the first season, while the chisel plough treatment recorded the lowest readings in the second season .The wide-level disc treatment reading 90.75 cm, 86.5 in the two season consecutively. The chisel plough treatment recorded a high number of tillers (1.75- 2) in the two season, wide-level disc gave the lowest number of tiller (1.25). Determination of power requirements for the implements studied recorded that: Power requirements needed for chisel plough was 17.21kw at depth 22cm, where as the wide-level disc implement needed 11.66kw power requirement at depth 8 cm .and the disc harrow implement at 10 cm depth needed power requirements equal 9.99kw . تم تنفيذ تجربه حقليه خلال موسمين متتاليين 7002 و 7002 في التربة اليينية المتقةقق لقيةا ألزراعه الميري الاليه ولاي القضارف )السودان( بهدف تقييم اثر طرق الحراثه على إنتاجية ألةذر الرفيع . تم تصميم التجرب باستخدام القياعات العقوائي الكامل . أربعه معاملات بار بعةه تكةرارات . المعةةاملات تقةةمم المحةةراا الحفةةار ا المقةة القراةةي ا المحةةراا القراةةي العةةري والحراثةةه الصفري . شملت الدراسة تةيثير أنةوا الحراثةه علةي معةدل التسةربانمو نرةات الةدرط مةن حية طةول النرات عدد الخلف و الانتاجيه. كما شملت الدراس حساب احتياجات قدرط السحب للمحارية تحةت – الدراس لمختلف الأعماق. أوضحت الدراس أن متوس السعه الحقلية 24.75 ومتوسة الكاافة الهايرية 1.28g/cm³ ومعدل تسرب ابتدائي في الخمس دقائق الأولي 210 mm/h ومعدل التسرب القاعدي 13.2 mm/h في الموسم الأول وفي ألسنه الااني كان معدل التسةرب فةي الخمةس دقةائق الأولةي 192 mm/h بينمةا معدل التسرب القاعدي .12 mm/h سجلت معامل المق القراي اعلي قيمه ليةول النرةات ) (97.75, 90.25cm للموسةمين علةي التوالي بينما سجلت الزراع الصفري متوسة ادنةي قيمةه ليةول النرةات 86cm) ( فةي الموسةم الأول في حين سجم المحراا الحفار ادني متوس قرأ ليول النرةات (72cm) فةي الموسةم الاةاني. سةجلت 5 معامل المحراا القراي العري متوس طول ) (90.75, 86.5cm في الموسةمين الأول و الاةاني علي التوالي. معاملة المحةراا الحفةار أعيةت اعلةي متوسة للخلةف ) (2, 1.75 للموسةمين علةي التةوالي بينمةا سةةجلت معاملةة المحةةراا القراةةي العةةري ) 1.25 ( ادنةةي نسةةره فةةي الموسةةم الأول والاةةاني علةةي التوالي. عند حساب احتياجات قدرط السحب سجلت معامل المحراا الحفار 17.21kw عند عمق 77 سم بينما احتياجةات ألقةدر للمحةراا القراةي العةري عنةد عمةق 8 سةم كانةت 11.66kw احتياجةات قةدرط السحب لآل المق القراي عند عمق 10cm سجلت 9.99kw
Implement Draught and Power Requirement For Tillage operations in Gezira Soil (With Special Reference to Massad Area)
(AL-Neelain University, 2012-11) Yusuf Elamin Elmadani Akashah
ABSTRACT An experiment was conducted during the year 2011 at Massad Centre for Technology Transfer and Eextension (latitude 14° 24¢N and longitude 33° 29¢E) in Gazira Scheme to study tractor power requirement for two implements commonly used for tillage operations in Gazira Scheme. The implements were a chisel plough as a primary tillage implement and an offset disc harrow for secondary tillage. Power requirements were studied under wet and dry soil conditions and for two depths of work for each implement (20-30cm, 5-10cm). Effect of implement draught on the performance of 2WD (120 hp) tractor was investigated in terms of wheel slip (%) under the field conditions of the experiment using different levels of wheel ballast. Draught requirement for the chisel plough was found to be as a range between11 to 15 kN. And for disc harrowing the values ranged between 7 to 10 kN. Maximum power required at a speed of 7 km/h was 29 kW (39 hp). Optimum performance (with 10 to 15% wheel slip) during chisel ploughing was achieved with water ballast at the rear wheels to 50% of the tyre volume and 50 kg of cast iron weight on each rear wheel. During disc harrowing, optimum performance was achieved with 25% water ballast in the rear wheels with additional 100 kg of cast iron weight on the rear wheels. الخلاصة: أجريت ألتجربة خلال ألعام 2011 فى مركز مساعد لنقل ألتقانة وألارشاد خط طول ْ33 َ29 ق وخط عرض ْ14 َ24 ش) بولاية ألجزيرة لدراسة متطلبات قوة ألجر لاثنين من ألالات ألمستعملة عادة فى عمليات ألحراثة فى مشروع ألجزيرة ألمحراث ألحفار( ألازميلى) كالة حراثة أولية وألمشط ألقرصى كالة حراثة ثانوية ) . تمت دراست قوة ألجر تحت ظروف ترب جافة ورطبة ولعمقين لكل ألة . تاثير قوة ألجر فى أداء جرار ألدفع ألثنائى (120 حصان) تحقق كجزء من ألنسبة ألمئوية لأنزلاق ألعجلات تحت ألظروف ألحقلية للتجربة باستخدام مستويات مختلفة من ألاوزان ألاضافية على ألعجل. قوة ألجر ألمطلوبة للمحراث ألحفار(ألازميلى) وجدت فى ألمدى بين 11-15 كيلو نيوتن وللمشط ألقرصى بين 7-10 كيلو نيوتن . أقصى قدرة مطلوبة عند سرعة 7 كيلومتر- ساعة كانت29 كيلو واط (39 حصان) . أفضل أداء (مع نسبة أنزلاق 10-15%) خلال ألحراثة بالمحراث ألحفار( ألازميلى) وجدت عند أضافة 50% ماء من حجم ألاطار ألخلفى وأضافة أوزان حديدية أضافية 50 كجم لكل عجل خلفى. خلال أستخدام ألامشاط ألقرصية كان أفضل أداء عند أضافة 25% ماء من حجم ألاطار ألخلفى وأضافة أوزان حديدية أضافية 100 كجم لكل عجل خلفى.
Smart Incubator
(Al-Neelain University, 2013-09) Alaa abdal-rahim muhammed
background : Poultry is one of the most important source of protein , and its cost is appropriate with the low-income, it is characterized by fast multiplying , short life cycle and high production efficiency.[1] objectives : The aim of this project is development of eggs incubator currently deployed for the purpose of reducing the proportion of errors that occur due to either person or the circumstances surrounding the eggs. Also to make it possible to put different types of eggs in the incubator, just after some adjustments in the device, methods : these paper implies an experimental study , adjustments depends on the type of bird, in this project the tungsten lamb is use as alternative of mother heat , fan to provide the necessary ventilation, also some water for proper humidity. Metal cylinders connected by DC motor used for flipping eggs to make sure the heat was distributed ,push buttons to enter some information from the user, LCD for the current status , the LCD and DC motor are connected to micro controller to make the process of flipping and monitoring the changes done automatically . In this project chicken eggs were chosen ,16 veterinary eggs in meddle size were put inside the incubator , and monitored for 21days. results : 12 eggs hatched , 8 from them were in a good health but the others had fewer fluff than the others . conclusion and recommendations: The solar system Is an ideal system for such projects, especially if the power supply was irregular that insures the process of incubation occurs automatically since the beginning of the incubation period tell the eggs hatch , without any interruption .
SMART INCUBATOR
(Al-Neelain University, 2013-09) ALAA ABD AL-RAHIM MUHAMMED TALHA
Abstract background : Poultry is one of the most important source of protein , and its cost is appropriate with the low-income, it is characterized by fast multiplying , short life cycle and high production efficiency.[1]objectives : The aim of this project is development of eggs incubator currently deployed for the purpose of reducing the proportion of errors that occur due to either person or the circumstances surrounding the eggs. Also to make it possible to put different types of eggs in the incubator, just after some adjustments in the device, methods : these paper implies an experimental study , adjustments depends on the type of bird, in this project the tungsten lamb is use as alternative of mother heat , fan to provide the necessary ventilation, also some water for proper humidity. Metal cylinders connected by DC motor used for flipping eggs to make sure the heat was distributed ,push buttons to enter some information from the user, LCD for the current status , the LCD and DC motor are connected to micro controller to make the process of flipping and monitoring the changes done automatically . In this project chicken eggs were chosen ,16 veterinary eggs in meddle size were put inside the incubator , and monitored for 21days. results : 12 eggs hatched , 8 from them were in a good health but the others had fewer fluff than the others . conclusion and recommendations: The solar system Is an ideal system for such projects, especially if the power supply was irregular that insures the process of incubation occurs automatically since the beginning of the incubation period tell the eggs hatch , without any interruption . نبذة مختصرة الخلفية: تعتبر الدواجن من أهم مصادر البروتين ، وتكلفتها تتناسب مع محدودي الدخل ، وتتميز بسرعة التكاثر ، وقصر دورة الحياة ، وكفاءة الإنتاج العالية. [1] الأهداف: الهدف من هذا المشروع هو تطوير حاضنة البيض المنتشرة حاليا لغرض تقليل نسبة الأخطاء التي تحدث إما بسبب الشخص أو الظروف المحيطة بالبيض. وأيضًا لإتاحة إمكانية وضع أنواع مختلفة من البيض في الحاضنة بعد إجراء بعض التعديلات في الجهاز ، الطرق: تتضمن هذه الورقة دراسة تجريبية ، وتعتمد التعديلات على نوع الطائر ، وفي هذا المشروع يتم استخدام لحم التنجستن كبديل للحرارة الأم ، والمروحة لتوفير التهوية اللازمة ، وكذلك بعض الماء للرطوبة المناسبة. يتم توصيل الأسطوانات المعدنية بمحرك DC لتقليب البيض للتأكد من توزيع الحرارة ، وأزرار الضغط لإدخال بعض المعلومات من المستخدم ، وشاشة LCD للحالة الحالية ، وشاشة LCD ومحرك DC متصلان بجهاز تحكم دقيق لإجراء عملية التقليب ومراقبة التغييرات التي تتم تلقائيًا. في هذا المشروع تم اختيار بيض دجاج ، تم وضع 16 بيضة بيطرية بحجم متداخل داخل الحاضنة ، وتم مراقبتها لمدة 21 يومًا. النتائج: فقس 12 بيضة ، 8 منها كانت بصحة جيدة لكن البقية كانت بها زغب أقل من البقية. الخلاصة والتوصيات: النظام الشمسي هو نظام مثالي لمثل هذه المشاريع خاصة إذا كان التيار الكهربائي غير منتظم مما يضمن حدوث عملية الحضانة بشكل آلي منذ بداية فترة الحضانة أخبر البيض يفقس دون أي انقطاع.
1 يم ح ر ل ا ن حم ر ل ا الله م س ب Thyristor Controlled Series Compensation (TCSC) For Improving The Stability of Multi - machine Power System
(Al Neelain University, 2014) Ayman Abdal Mageed Ahmad Abdal Rhman
16 ABSTRACT The objective of this research is to improve the stability of power system by thyristor controlled series compensator (TCSC) .controller for damping power oscillations and improving transient stabili ty and voltage stability margin . The proposed approach is carried out on two - area two - machine 3 - bus as a model system to test .The system is controlled by power system stabilizer ( PSS) and proportional - integral (PI) Controller with lead - lag to add damping to the rotor oscillations of the power system . The propo sed TCSC controller is tested on a multi - machine system and the simu lation results are presented. 17 الوسخخلص في هرا البحث ححسين إ سخقساز نظام القدزة هن خلال ثايسسخىز الخحكن سلسلت الوعىض (TCSC) و و حدة ححكن لخخويد حربرباث الطاقت وححسين الإ سخقساز ال عابسة و إ سخقساز الهاهش الفىلخيت . يخن حنفير النهح الوقخسذ هن على هنطق خين وهاكانخين 3 بسباز ك نوىذج ل خخباز ال نظام و يخن عسض نخيدت ال وحاكاة للخحقق هن صحت حالت إ خخباز ال نظام الوقخسذ . يخن الخحكن في النظام عن طسيق هثبيج نظام الطاقت (PSS) و الوخحكن الخناسبي الخكاهلي( PI ) هع ( l ag - l e ad ) لإضافت الخخويد الخربرباث في نظام القدزة . يقدم هرا البحث إخساء النورخت والوحاكاة باسخخدام الوخلاب
Design and Simulation of Mobile Robotic Ann Controller Using Microcontroller and Cell Phone
(AL-Neelain University, 2014) Abdelhameed Altoum Abdelhameed
The objectives of design this robot is simply to help the humans in the future for security purposes. In the present scenario, there are many recent developments of robotics and communication on a large scale. The methodology used in this research is Dual Tone Multi-Frequency (DTMF) and PIC microcontroller. Robotic arm was controlled by a cell phone and it can be communicate on a large scale over a large distance even from different cities. Furthermore there are number of advantages as well as important features such as accuracy when receiving transmitted signals from cell phone and movement in all directions. This robot can also be used to reach the places where humans cannot reach such as small turmels, dangerous places and also can be used to transport of hazardous materials combustible etc. This is the way in which the robot can be used in different ﬁelds as well as for research purpose by fU1’1Il'l6I' manipulation in programming and it can be modiﬁed accordingly. Finally the simulation results obtained were acceptable using mikroc compiler and proteus simulation program.
Design and simulation of mobile robotic arm controller using micrconrdller and cell phone
(Al-Neelain University, 2014) Abd elhmeed altoum abd elhmhameed
ABSTRACT The objectives of design this robot is simply to help the humans in the future for security purposes. In the present scenario, there are many recent developments of robotics and communication on a large scale. The methodology used in this research is Dual Tone Multi-Frequency (DTMF) and PIC microcontroller. Robotic arm was controlled by a cell phone and it can be communicate on a large scale over a large distance even from different cities. Furthermore there are number of advantages as well as important features such as accuracy when receiving transmitted signals from cell phone and movement in all directions. This robot can also be used to reach the places where humans cannot reach such as small turmels, dangerous places and also can be used to transport of hazardous materials combustible etc. This is the way in which the robot can be used in different ﬁelds as well as for research purpose by fU1’1Ih6I' manipulation in programming and it can be modiﬁed accordingly. Finally the simulation results obtained were acceptable using mikroc compiler and proteus simulation program. XI
funcation using of fopdt stopdt and skogestad in control soodt
(Al-Neelain University, 2014) Aya hashim al- amin
ABSTRACT Working with high order transfer function needs a lot of work. Transfer functions of high order may be approximate as low order transfer function with time delay. This done by First Order Plus Dead lime (l'()l’I)'l‘)_ Second ()rder Plus Dead Time (SOPDT) and Skogestad. The main objective ofthis research is to approximate the higher order transfer function to ﬁrst and second order transfer function using the three methods. Then compare the result with the original plant transfer function so as to test the dependency of these methods . DC motor speed transfer function was taken as model to verify the result.
design of solar power station
(Al-Neelain University, 2014) Alaa magboul edress
ABSTRACT Sudan is a wide country and there are a lot of areas that are not connected to power grid. So solar energy can be useful to supply remote areas for lighting and water pumps and hospital. This research is about to implement solar power station of 220V, SOHZ for domestic use and also using direct D.C voltages for hospitals and clubs. IV