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Article
Design and Implementation Model for Linearization Sensor Characteristic by FPAA

Authors: Alaa Abdul Hussein Salman --- Fadhil Rahma Tahir --- Mofeed Turky Rashid
Journal: Iraqi Journal for Electrical And Electronic Engineering المجلة العراقية للهندسة الكهربائية والالكترونية ISSN: 18145892 Year: 2015 Volume: 11 Issue: 2 Pages: 165-173
Publisher: Basrah University جامعة البصرة

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Abstract

Linearization sensors characteristics becomes very interest field for researchers due to the importance in enhance the system performance, measurement accuracy, system design simplicity (hardware and software), reduce system cost, ..etc. in this paper, two approaches has been introduced in order to linearize the sensor characteristics; first is signal condition circuit based on lock up table (LUT) which this method performed for linearize NTC sensor characteristic. Second is ratiometric measurement equation which this method performed for linearize LVDT sensor characteristic. The proposed methods has been simulated by MATLAB, and then implemented by using Anadigm AN221E04 Field Programmable Analog Array (FPAA) development kit which several experiments performed in order to improve the performance of these approaches.

Keywords

Characteristic linearization --- LUT --- NTC --- LVDT --- FPAA


Article
Electrode Consumption Simulation for Shielded Metal Arc Welding in Virtual Welding Training System

Authors: Raheem Kh. Al-Sabur --- Qais A. Rishack
Journal: Basrah Journal for Engineering Science مجلة البصرة للعلوم الهندسية ISSN: Print: 18146120; Online: 23118385 Year: 2014 Volume: 14 Issue: 2 Pages: 56-61
Publisher: Basrah University جامعة البصرة

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Abstract

One of the major problems in industry are new welding trainees cost, it drains the budget of many companies, particularly in industrialized countries, through raw material costs for preparation, welding wires, electric and fumes in addition to time spent. Recently a new technique was appeared; it is called virtual welding training system (VWTS) to reduce the training cost. In the present work a VWTS technique was built, a simulation of electrode motion is upgraded by using LVDT to represent the welding arc length while a DC motor with gearbox connect to the steel rode is used to represent welding electrode consumption. A 2D graphs with touch screen monitor are used to represent welding process. All sensors were calibrated to generate a VWTS. Accepted results obtained in training new welding trainees in the shielded metal arc welding (SMAW) training.

Keywords

Virtual welding --- electrode simulator --- SMAW --- LVDT --- VWTS


Article
Stabilizing Gap of Pole Electric Arc Furnace Using Smart Hydraulic System
استقرار فجوة قطب فرن القوس الكهربائي باستخدام منظومة الهيدروليكية الذكية

Authors: Maher Yahya Sallom ماهر يحيى سلوم --- Riyam Neamah Khaleel ريام نعمة خليل
Journal: Al-Khwarizmi Engineering Journal مجلة الخوارزمي الهندسية ISSN: 18181171 23120789 Year: 2015 Volume: 11 Issue: 1 Pages: 11-18
Publisher: Baghdad University جامعة بغداد

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Abstract

Electric arc furnace applications in industry are related to position system of its pole, up and down of pole. The pole should be set the certain gap. These setting are needed to calibrate. It is done manually. In this research will proposed smart hydraulic to make this pole works as intelligent using proportional directional control valve. The output of this research will develop and improve the working of the electric arc furnace. This research requires study and design of the system to achieve the purpose and representation using Automation Studio software (AS), in addition to mathematically analyzed and where they were building a laboratory device similar to the design and conduct experiments to study the system in practice and compared with simulation.Experimental tests show that the performance of electro hydraulic closed loop system (EHCLS) for position control is good and the output results are good and acceptable. The practical results and simulation using (AS) software are clearly convergence. It was concluded that the possibility of the implementation of this project in industrial processes such as electric arc furnaces to control the distance between the pole and smelting molten material in addition to other applications.

التطبيقات فرن القوس الكهربائي في الصناعة ترتبط بوضع القطب وحركته صعودا وهبوطا. يجب تعيين موقع محدد للقطب. اعداد ذلك يتطلب معايرة تتم يدويا. في هذا البحث اقترح منظومة هيدروليكية ذكية لجعل هذا القطب يعمل ذكيا باستخدام صمام السيطرة الهيدروليكية الاتجاهي التناسبي. إخراج هذا البحث طبق في فرن القوس الكهربائي. يتطلب هذا البحث دراسة وتصميم نظام لتحقيق الغرض والتمثيل باستخدام برنامج (Automation Studio 5.2) بالإضافة إلى تحليلها رياضيا وحيث تم بناء جهاز وختبري مماثل لتصميم وإجراء التجارب لدراسة النظام عمليا و مقارنة مع Simulation .من الاختبارات التجريبية تبين ان أداء (EHCLS) للسيطرة على الموقع واخذت النتائج العملية وقورنت مع نتائج Simulation وكانت متقاربة ومقبولة. علاوة على إمكانية تنفيذ هذا المشروع في العمليات الصناعية مثل أفران القوس الكهربائي للسيطرة على المسافة بين القطب وصهر المواد المنصهرة اضافة الى التطبيقات الأخرى.

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