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Design of a semi-active suspension system using self-organizing fuzzy controller

تصميم نظام تعليق نصف فعال باستخدام المتحكم الضبابي ذاتي التنظيم

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 Publication date 2015
and research's language is العربية
 Created by Shamra Editor




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One ofa car's suspension system functions is to isolate vibrations resulting from road on the driver and ensure a comfortable ride. But the design of control systems for semi-active suspension systems is difficult because of the non-linearity of the constituent elements of these systems which make the researches related to it characterized by complexity. So in order to improve the performance of semi-active suspension systems without bearing the effort of designing a model based controller, a control system is designed using self-organizing fuzzy controller based on the principle of delay-in-penalty to control a semi-active suspension system which uses a magneto rheological damper. The controller tries to enhance system performance using the desired response as it is described in the penalty table. The fuzzy logic controller is based on two inputs namely sprung mass velocity and unsprung mass velocity. Using a quarter car model with 2 degree-of-freedom the system is modeled and simulated in MATLAB &Simulink® and the results are compared to the widely used sky-hook strategy. the simulation showed the ability of the self-organizing fuzzy controller to provide good results in minimizing sprung mass acceleration in variousroad profiles compared to sky-hookstrategy.


Artificial intelligence review:
Research summary
تتناول هذه الورقة البحثية تصميم نظام تعليق نصف فعال باستخدام متحكم ضبابي ذاتي التنظيم للتحكم في مخمدات مغناطيسية ريولوجية. يهدف نظام التعليق إلى تحسين راحة القيادة عبر تقليل الاهتزازات الناتجة عن وعورة الطريق. تم استخدام نموذج ربع سيارة بدرجتي حرية لمحاكاة النظام في بيئة MATLAB & Simulink، وتمت مقارنة النتائج مع استراتيجية Sky-hook الشهيرة. أظهرت النتائج قدرة المتحكم الضبابي ذاتي التنظيم على تقديم أداء جيد في تقليل تسارع الكتلة المعلقة مقارنة باستراتيجية Sky-hook. يعتمد المتحكم الضبابي على متغيرين رئيسيين هما سرعة الكتلة المعلقة وسرعة الكتلة غير المعلقة، ويستخدم مبدأ التأخير في الجزاء لتحسين أداء النظام بناءً على الاستجابة المرغوبة. تم تصميم جدول جزاء لتحديد القيم المرغوبة للاستجابة، وتم تدريب النظام على نموذج طريق محدد لاختبار فعالية المتحكم. أظهرت المحاكاة أن النظام المقترح يقدم تحسينات ملحوظة في راحة القيادة مقارنة بالأنظمة التقليدية.
Critical review
تعتبر الدراسة المقدمة خطوة مهمة نحو تحسين أنظمة التعليق نصف الفعالة باستخدام تقنيات التحكم الضبابي. ومع ذلك، يمكن الإشارة إلى بعض النقاط التي قد تحتاج إلى مزيد من البحث والتطوير. أولاً، لم يتم اختبار النظام في ظروف واقعية متعددة، مما قد يؤثر على دقة النتائج عند تطبيقها في الحياة العملية. ثانياً، قد يكون من المفيد دمج استراتيجيات تحكم أخرى مع المتحكم الضبابي لتحسين الأداء بشكل أكبر. أخيراً، يمكن أن تكون عملية التدريب والتعديل الذاتي أكثر تعقيداً وتحتاج إلى وقت طويل، مما قد يكون غير عملي في بعض التطبيقات.
Questions related to the research
  1. ما هو الهدف الرئيسي من نظام التعليق نصف الفعال المقترح في الورقة البحثية؟

    الهدف الرئيسي هو تحسين راحة القيادة عبر تقليل الاهتزازات الناتجة عن وعورة الطريق باستخدام متحكم ضبابي ذاتي التنظيم للتحكم في مخمدات مغناطيسية ريولوجية.

  2. ما هي المتغيرات التي يعتمد عليها المتحكم الضبابي في النظام المقترح؟

    يعتمد المتحكم الضبابي على متغيرين رئيسيين هما سرعة الكتلة المعلقة وسرعة الكتلة غير المعلقة.

  3. كيف تم تقييم أداء النظام المقترح في الورقة البحثية؟

    تم تقييم أداء النظام عبر محاكاة نموذج ربع سيارة في بيئة MATLAB & Simulink، ومقارنة النتائج مع استراتيجية Sky-hook الشهيرة.

  4. ما هي التحديات التي قد تواجه تطبيق النظام المقترح في الحياة العملية؟

    التحديات تشمل عدم اختبار النظام في ظروف واقعية متعددة، وتعقيد عملية التدريب والتعديل الذاتي، والحاجة إلى دمج استراتيجيات تحكم أخرى لتحسين الأداء بشكل أكبر.


References used
Jazar, Reza N.Vehicle Dynamics: Tehory and Applications. New York : Springer, 2008. p. 1015. ISBN:978-0-387-74243-4
Rill, George.Vehicle Dynamics. University of Applied Sciences. Fachhochschule Regensburg, 2006. p. 157, Lecture notes
Dixon, John C.The Shock Absorber Handbook. Chichester : Wiley, 2007. p. 445. ISBN: 9780470510209
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