کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
565436 1451859 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Semi-active damping strategy for beams system with pneumatically controlled granular structure
ترجمه فارسی عنوان
استراتژی کمکی فعال برای سیستم پرتوهای با ساختار دانه گرانشی تحت کنترل پنوماتیک
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی


• Control method for semi-active damping of beam systems.
• Damping of a granular material controlled pneumatically.
• Control strategy was verified experimentally for free vibrations of a cantilever.
• Periodic switching reduces vibration more effectively than treated passively.

The paper deals with a control method for semi-active damping of a double beam system with a smart granular structure placed in a thin silicone envelope. The damping properties of the system are controlled pneumatically, by subjecting the granular material to underpressure at particular moments. A mathematical model of the layered beam with a granular damping structure is represented by the two degrees of freedom, modified Kelvin–Voigt model of two masses, a spring with controllable stiffness, and a viscous damper with a variable damping coefficient. The optimal control problem is posed, using the concept of switching of the parameters to increase the efficiency of suppressing the displacement׳s amplitude. The resulting control strategy was verified experimentally for free vibrations of a cantilever system. The research proved that the appropriate, periodic switching of the properties of the considered structure enables reducing the vibration more effectively than if the material is treated passively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volumes 70–71, March 2016, Pages 387–396
نویسندگان
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