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Article
MATHEMATICAL DRIVING MODEL OF THREE PHASE INDUCTION MOTORS IN STATIONARY COORDINATE FRAME

Authors: Ahmed Ibrahim jaber احمد ابراهيم جابر --- Husham Idan Hussein هشام عيدان حسين
Journal: DIYALA JOURNAL OF ENGINEERING SCIENCES مجلة ديالى للعلوم الهندسية ISSN: 19998716/26166909 Year: 2015 Volume: 8 Issue: 4 Pages: 255-265
Publisher: Diyala University جامعة ديالى

Abstract

In this paper mathematical analysis for a design three-phase induction motor. Three phase AC induction motors is popular in manufacturing for many reasons. It is quite simple and minimum costs are favorable. It does not have brushes and requires minimum maintenance. In this paper a mathematical development to three-phase AC induction motor by using matrix form. The development applying on model of a real drive of 1.1 kW motor has been achieved. To analysis the axis, three-phase coordinate (A, B, C) to a two axis (β - α) as a (stationary part) representation. Through this drive conversion torque and speed can be controlled easily and control optimization induction motors. MATLAB/ SIMULINK is used to simulate the model of (IM) as tool and for study of characteristics of the motor.

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Article
Cut quality of mild Steel by CO2 laser
قطع نوعية الفولاذ الطري بواسطة الليزر CO2

Author: Jasim Hassan Rasheed جاسم حسن رشيد
Journal: Journal of Research Diyala humanity مجلة ديالى للبحوث الانسانية ISSN: 1998104x Year: 2009 Issue: 36 Pages: 129-155
Publisher: Diyala University جامعة ديالى

Abstract

Cut quality of mild steel by Co2 laser is studied extensively and new approach to classify quality is presented . This approach is based on combining different parameters such as cut kerf, heat affected zone and roughness.A mathematical relationship(in matrix form ) has been developed to include all the above Parameters in one factor which is called the quality factor . In addition , cut quality by CO2 laser is compared with many different machining techniques which are produced by previous researchers .This comparison shows that CO2 laser are an excellent tool

تمت دراسة نوعية قطع الفولاذ بليزر ثاني اوكسيد الكاربون بصورة واسعة وقد تم تقديم مقترح جديد لتصنيف نوعية القطع . ان هذا التصنيف اسس على دمج ثلاثة عوامل لها صلة بنوعية القطع وهي : اخدود القطع والمنطقة المتأثرة حراريا والخشونة . اقترحنا علاقة رياضية ( بصيغة المصفوفة ) تشمل العوامل الثلاث اعلاه اضافة لذلك عرضنا مقارنة لنتائج تقنيات قطع عديدة لبحوث سابقة ومن ضمنها النتائج الحالية وقد اظهرت تمتع ليزر ثاني اوكسد الكاربون بنوعية قطع جيدة .

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