Preferred Language
Articles
/
alkej-236
Integral Sliding Mode Control Design for Electronic Throttle Valve System
...Show More Authors

Abstract

 One of the major components in an automobile engine is the throttle valve part. It is used to keep up with emissions and fuel efficiency low. Design a control system to the throttle valve is newly common requirement trend in automotive technology. The non-smoothness nonlinearity in throttle valve model are due to the friction model and the nonlinear spring, the uncertainty in system parameters and non-satisfying the matching condition are the main obstacles when designing a throttle plate controller.

In this work, the theory of the Integral Sliding Mode Control (ISMC) is utilized to design a robust controller for the Electronic Throttle Valve (ETV) system. From the first instant, the electronic throttle valve dynamics is represented by the nominal system model, this model is not affected by system parameters uncertainty and the non-smooth nonlinearities. This is a consequence of applying the integral sliding mode control. The ISMC consists of two part; the first is the nominal control which is used to control the nominal system, while the second is a discontinuous part which is used to eliminate the effects of the parameters uncertainty and the non-smooth nonlinearities from system model. These features for the ISMC are proved mathematically and demonstrated numerically via seven numerical simulations and for different desired trajectories.  The simulation results clarify that for different system parameters, the ETV behaves as a nominal system. This enables to freely and precisely select the system response characteristics and the time required for the throttle angle to reach the desired value. Moreover the ability to deal with the chattering problem is demonstrated through the worked  simulation tests, where the chattering is eliminated via approximating the signum function by arc tan function.

 Keywords: Electronic throttle valve, Nonlinear spring model, Integral sliding mode control, Non-smooth model.

View Publication Preview PDF
Quick Preview PDF
Publication Date
Mon Feb 04 2019
Journal Name
Journal Of The College Of Education For Women
Human ability to change in Koran
...Show More Authors

In this research the subject of human ability to change, as it is proven in the Koran , which is proof of the argument against the ability of human change , whether the change in the positive or negative direction .
Here the limits of the research are limited to a study of analysis of human ability to change and this establishes the important of knowing that man has the ability while in the wrong way to change the path to the right path which Gifts and guidance .
The search required three demands and conclusion
- The first required :- is to try the idolaters to take out believers by right .
- The second required :- is to change what is inside the soul as a reason to enter blessings on man .
- The third required :- is good

... Show More
View Publication Preview PDF
Publication Date
Thu Dec 30 2021
Journal Name
Journal Of Legal Sciences
Violation of the rights of sound record producers (piracy) (A Comparative study)
...Show More Authors

Piracy is one of the most important problems faced by sound record producers, because it is a problem that technology, evolves with the development of time and and although piracy is not a new problem, it has received great attention in recent years, because of the means by which (the Internet) and its size result from it, even In many of the ruler, describing it as (the crime of nd she participated in the great the electronic age) aharm it causes to all the groups involved in it producing the sound recording, because there are three categories that contribute to the production of the sound recording, which is (the author of the recorded work, the st who performs the work and the producer who artiperforms an operation Performance recording

... Show More
View Publication
Publication Date
Fri Dec 31 2021
Journal Name
مجلة الاقتصاد الخليجي
أثر فروقات الضرائب المؤجلة على القوائم المالية
...Show More Authors

نتيجة للتطور و انفتاح الاسواق الاقتصادية عالميا ظهرت اهمية الافصاح في القوائم المالية و اعدادهايكونمبني على ( العدالة و الشفافية ) في اظهار البنود الواردة فيها ، و لان هذه القوائم تعد لا كثر من جهة مستفيدة ( اصحاب المصلحة ) سواء كانوا مستثمرين او مقرضين او هيئات حكومية حيث يجب اعدادها بطريقة اكثر شفافية و بدون تحيز لجهة دون اخرى ،هدفت الدراسة الى التعرف على اهم الفروقات الضريبية المؤجلة التي تنشأ في الوحدات الا

... Show More
View Publication Preview PDF
Publication Date
Mon Feb 04 2019
Journal Name
Journal Of The College Of Education For Women
Peace Indicating Words in Pre- Islamic Poetry
...Show More Authors

In pre- Islamic poetry, there are a lot of words that indicate
peacefulness of one sort of another, in addition to the inspirations of semantic
modeling in which the poet sets himself in various horizons.
Among these words: brother, comrade, friend, companion, lover,
people, prince, home, land, country, blessing, honesty, contract, company,
justice, thankfulness, forgiveness, pardoning, guest, goodness, faithfulness,
silence, death, peace,….
In addition, there are their derivatives from various aspects that indicate
peacefulness either directly or indirectly.

View Publication Preview PDF
Publication Date
Thu Jun 27 2019
Journal Name
Journal Of The College Of Education For Women
The Formula of the Name (Faael) in Plural According to the Dictionary Use
...Show More Authors

The grammar structure transforms from its fundamental field to another field that takes new dimensions, and is used in another way in speech that differs from the first one, because the formula basis of the name(Faael) in speech is a (distorted characteristic), and the distorted characteristic indicates the stability and the necessity of the characterized. as this characteristic has changed from its use as a distorted characteristic which was established by the elders. to a use that differs from the first and cannot be overlooked to achieve a new purpose, to be used as plural

View Publication Preview PDF
Publication Date
Fri Dec 29 2017
Journal Name
Al-khwarizmi Engineering Journal
Microcontroller – Based Spectrum Analyzer
...Show More Authors

This work includes design, implementation and testing of a microcontroller – based spectrum analyzer system. Both hardware and software structures are built to verify the main functions that are required by such system. Their design utilizes the permissible and available tools to achieve the main functions of the system in such a way to be modularly permitting any adaptation for a specific changing in the application environment. The analysis technique, mainly, depends on the Fourier analysis based methods of spectral analysis with the necessary required preconditioning processes. The software required for waveform analysis has been prepared. The spectrum of the waveform has been displayed, and the instrument accuracy has been checked.

... Show More
View Publication
Publication Date
Wed Jan 02 2008
Journal Name
Political Sciences Journal
الطائفية وتداعياتها على بناء الدولة العراقية المعاصرة
...Show More Authors

الطائفية وتداعياتها على بناء الدولة العراقية المعاصرة

View Publication Preview PDF
Crossref
Publication Date
Wed Dec 01 2010
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
اثر العولمة على السياسات و التطبيقات المحاسبية
...Show More Authors

The globalization concept is regarded one of the modern concept which had seen in the last time while it hadn’t occur now only, but it had seen clearly with the technology &information revolution beside the quick development  in the communication net which had made the world like a small village .

Since accounting is regarded business language based on integrated theoretical framework consists of many connected objective & rules which led to consistent accounting standards .

So with this development there is a clear need to consolidate  the concepts , policies ,and applications which the companies use it in treating its financial events .

View Publication Preview PDF
Publication Date
Fri Jul 24 2020
Journal Name
مجلة الفنون والادب وعلوم الانسانيات والاجتماع
التحفظات على اتفاقية سيداو (الدول العربية انموذجا)
...Show More Authors

يهدف البحث إلى دراسة التحفظات على اتفاقية سيداو (الدول العربية أنموذجًا)، حيث يُعد نظام التحفظ على الاتفاقيات الدولية أحد المظاهر القانونية الحديثة في مجال العلاقات الدولية، والذي يقرّ بحق الدول في إبداء التحفظ على بعض أحكام الاتفاقيات الدولية، وفقًا للأحكام العامة التي حددتها المواد (19-23) من اتفاقية فيينا لقانون المعاهدات لعام 1969. وإذا كان حق الدول في التحفظ مكفولًا دوليًا، فإن الإشكالية القانونية تكمن في

... Show More
View Publication Preview PDF
Publication Date
Fri Jun 30 2023
Journal Name
College Of Islamic Sciences
Concealment of Offenders: Its Conceptions, Evidence, Objectives, Criteria
...Show More Authors

Concealment of the Offenders:

Its Conceptions, Evidence, Objectives, Criteria

This study discusses the concealment of the offenders, but also emphasize the importance of clarifying this concept. Furthermore, it differentiates between this concept and other relevant concepts. Moreover, this study explains that the ruling of the concealment of the offenders is required by sharia. This is evident by many proofs of the Quran and the Sunnah in addition to being in line with the sharia’s objectives.

Additionally, the study mentions several advantages to the concealment of an offender and the disadvantages of reporting an offender. Examples include ensuring the Islamic community cohesion, encouraging offe

... Show More
View Publication Preview PDF