research centers


Search results: Found 4

Listing 1 - 4 of 4
Sort by

Article
Modified Approach for Tuning Fractional Order PID Controller (FOPID) Using Intelligent Control Techniques
طريقة معدلة لتنغيم المسيطر التكاملي التناسبي المشتق الجزئي باستخدام تقنيات السيطره الذكية

Authors: وليد خالد الجبوري --- احمد كريم عبدالله
Journal: journal of kerbala university مجلة جامعة كربلاء ISSN: 18130410 Year: 2010 Volume: 8 Issue: 3 Pages: 48-56
Publisher: Kerbala University جامعة كربلاء

Loading...
Loading...
Abstract

Many controllers are used to enhance the output responses for the complex system but there are several problem appear when classical controller are used therefore the world directed toward the intelligent control techniques to solve complex problem. In this paper the intelligent techniques are integrated with Fractional order PID controller (FOPID), to enhance the output response for the overall system. FOPID is a PID controller but its derivative parameter and integral parameter are fractional numbers not integers and it is consists of five parameters (KP, KI, Kd, α, β), these parameters are extracted and tuned by genetic algorithms, new performance criterion is used in this paper, by collecting the time response parameter (rise time , peak time, settling time ) with integral squire error ISE to produce good performance index ,finally the proposed approach has been tested and compared with another controllers. The simulation has been performed using MATLAB

عده مسيطرات استخدمت لتحسين استجابة الانظمه المعقدة ولكن هناك مشاكل ظهرت عندما استخدمنا المسيطرات التقليدية او الكلاسيكية لذا أنتجه العالم باتجاه تقنيات السيطره الذكية لحل مشاكل الانظمه المعقدة في هذا البحث التقنيات الذكية عشقت مع المسيطر الجزئي التناسبي التكاملي التفاضلي(FOPID) لتحسين استجابة النظام الكلية.المسيطر المفترج الجديد هو بالحقيقة مسيطر ثلاثي ولكن متغيرات المشتقة والتكامل ليس شرط ان تكون أرقام صحيحة وكذلك يحوي على خمس متغيرات بدل من ثلاثة متغيرات وهي (KP, KI, Kd, α, β)) وهذه المتغيرات الخمسه استخلصت من الخوارزميات الجينية . بالاضافه الى ذلك فقد تم تكوين معامل جديد للمقارنه يعتمد على جمع الأخطاء بالاشاره الخارجه مع متغيرات الاستجابه . وأخيرا قورنت النتائج مع مسيطر كلاسيكي ثلاثي وبدون استخدام مسيطر واثبتت النتائج قوه هذا المسيطر الجديد والحصول على استجابه جيده ومتغيرات زمنيه صغيره . واستخدم برنامج الماتلاب لتمثيل ورسم النظام.


Article
Design and Implementation of Rehabilitation Robot for Human Arm Movements †

Authors: Mr. Zeyad A. Karam2 --- Dr. Mohammed Y. Hassan1
Journal: IRAQI JOURNAL OF COMPUTERS,COMMUNICATION AND CONTROL & SYSTEMS ENGINEERING المجلة العراقية لهندسة الحاسبات والاتصالات والسيطرة والنظم ISSN: 18119212 Year: 2015 Volume: 15 Issue: 2 Pages: 24-33
Publisher: University of Technology الجامعة التكنولوجية

Loading...
Loading...
Abstract

Abstract –Physical disabilities such as full or partial loss of function in the shoulder and elbow are a common impairment in the elderly and a secondary effect due to strokes, trauma, sports and injuries. Rehabilitation programs are the main method to promote functional recovery in these subjects. This work focuses on designing and implementing a 3 DoF's non-wearable, light weight rehabilitation robot for rehabilitee the human arm that can be used in hospitals or homes. This robot structure eliminates arm singularity problem of the end effecter with respect to the robot base by adding an offset link. The design includes an adjustable mechanism standing on a seat for robot base and links to be adaptable for all body sizes and to align for all human arm lengths. Intelligent PD-like Fuzzy Logic position controllers (FLCs) are designed for joints of the 3 DoF's robot to follow the desired medical trajectories during limited time with minimum overshoot and minimum oscillations in position response. These controllers are implemented using MATLAB Simulink. The controllers control the rehabilitation robot using Data Acquisition Card, (Advantech PCI-1712) that generates and reads the required digital and analog signals for robot. The experimental results are acceptable in terms of the practical application.


Article
RESPONSE ENHANCEMENT OF DC MOTOR USING EVOLUTIONARY INTELLIGENT FRACTIONAL-ORDER PID CONTROLLER

Author: Nasser Ali Hasson Al-Zubaydi
Journal: Al-Qadisiyah Journal for Engineering Sciences مجلة القادسية للعلوم الهندسية ISSN: 19984456 Year: 2017 Volume: 10 Issue: 4 Pages: 591-599
Publisher: Al-Qadisiyah University جامعة القادسية

Loading...
Loading...
Abstract

An effective intelligent controller is suggested by mixing the Fractional-Order PID (FOPID) and fast genetic algorithms (FGAs) to improve the output response of DC motor. This controller is named as FGA-FOPID controller, the classical FOPID controllers have numerous benefits in practical implementation of many systems such as DC motor control compared with classical PID controllers, where the output response of the DC motor with FOPID or with classical PID is reasonable, but it’s not satisfaysthe response enhancements. So FGAs is used to slove the problem and to improve the overall output. The suggested work is confirmed by DC motor control system, and then compared with the classical PID and FOPID controllers. The simulated results establish that, the suggested work is adeptness from previous work.


Article
DESIGN OF INTELLIGENT PID CONTROLLER BASED ON MODIFIED SWARM TECHNIQUES

Author: Ahmed Kareem Abdullah
Journal: Al-Qadisiyah Journal for Engineering Sciences مجلة القادسية للعلوم الهندسية ISSN: 19984456 Year: 2017 Volume: 10 Issue: 2 Pages: 147-157
Publisher: Al-Qadisiyah University جامعة القادسية

Loading...
Loading...
Abstract

The swarm techniques are used widly to enhance the response of the control system, but there are many drawbacks appear when these techniques are used to select the initial solution for the problem and then will referect on the overall convergence. This paper try to solve this problem by modify the initial solution of particale swarm techniques based on fast genetic algorithm, the modified PSO make good free searching in candidate solutions to get optimum suggesions, which leads the algorithm towards the global optimum searching over wid range. The proposed controller named PSO-FGA-PID controller and two experiments are tested by this controller to check the proposed work, first one the linear time invariant system is taken and the second one is to control on the speed of the DC motor.

Listing 1 - 4 of 4
Sort by
Narrow your search

Resource type

article (4)


Language

English (4)


Year
From To Submit

2017 (2)

2015 (1)

2010 (1)