بهینه سازی مکانی حسگر/عملگر پیزوالکتریک بر پانل ساندویچی با اعمال اثرات ناپیوستگی

نوع مقاله: مقالة‌ تحقیقی‌ (پژوهشی‌)

نویسندگان

1 دانشکده فنی مهندسی، دانشگاه آزاد اسلامی، واحد تهران شمال

2 پژوهشگاه هوافضا- سامانه های فضانوردی- طراحی وسایل فضایی

چکیده

این مقاله با استفاده از رویکرد نُرم های H2 و ∞H به جانمایی بهینه وصله های پیزوالکتریک بر روی پانل ساندویچی یک فضاپیمای نمونه پرداخته است. برخلاف سایر روش های بهینه سازی موجود، رویکرد پیش رو نه تنها نُرم مودهای کنترل شده سیستم را افزایش می دهد، بلکه می تواند با در نظر گرفتن مودهای باقی مانده و کاهش نُرم های H2 و ∞H، مشکلات اسپیل اُور شدن سیستم را کاهش دهد. رفتار ارتعاشات باقی مانده سیسستم با در نظر گرفتن مدل سازه ساندویچی به جای استفاده از سازه های رایج و با استفاده از روش اجزاء محدود مدلسازی شده است. به منظور نمایش اثر جانمایی بهینه وصله های هوشمند پیزوالکتریک، رفتار ارتعاشی حلقه بسته سیستم با استفاده از کنترلر پسخوراند نرخ کرنش کنترل شده است. به منظور مدلسازی واقعی‌تر رفتار سازه، اثرات ناپیوستگی میان هسته و رویه ها در مدلسازی ها در نظر گرفته شده است.

کلیدواژه‌ها


عنوان مقاله [English]

Optimal Placement of Piezoelectric Sensor/Actuator Patches on Sandwich Panels Considering Debonding Effects

نویسندگان [English]

  • Mohammad Hossein Tirandaz 1
  • Milad َAzimi 2
1 Islamic Azad University, North Tehran Branch
2 Aerospace Research Institute of Iran (Ministry of Science, Technology and Research)
چکیده [English]

This paper aims to use H2 and H∞ norms to optimally place sensor/actuator patches on a flexible structure. Unlike most existing optimization methods, the proposed approach not only increases the norms of the controlled modes of the system but also it can reduce the system's spillover problems by taking into account the residual modes and reducing systems H2 and H∞ norms. The residual vibration of the system is captured considering sandwich structures and the finite element analysis. In order to show the optimal placement effect of piezoelectric patches, the vibrational behavior of the closed-loop system is controlled using strain rate feedback controller. Numerical simulation is performed to study the debonding effects between the sandwich layers.

کلیدواژه‌ها [English]

  • debonding
  • H2 and H∞ norms
  • Optimal Placement
  • Piezoelectric
  • Sandwich panels
  • vibration control
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