کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6953570 1451820 2019 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Localization of dynamic forces on structures with an interior point method using group sparsity
ترجمه فارسی عنوان
محلی سازی نیروهای پویا بر ساختارها با روش نقطه داخلی با استفاده از اسپاریسیت گروه
کلمات کلیدی
شناسایی نیرو، محلی سازی نیرو، سنجش فشرده، گروه اسپارتی، کاربرد،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی
This paper presents an algorithm for the localization of forces applied to a structure. The force estimation is performed in the frequency domain based on a limited number of sensors and a linear dynamic system model and it involves minimizing an objective function penalized with a group sparsity term. The minimization of this objective function is formulated as a second order cone program, which is solved using an interior point method. This allows for a reduction of the calculation time when compared to other algorithms that are currently available to enforce group sparsity on the forces, especially for large scale problems. The presented algorithm is first verified using numerical simulations. Next, a validation is performed using data obtained from a field test on a footbridge, where two locations on the bridge deck are excited using hammer impacts and the force localization is performed assuming a total of 108 possible force locations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volume 115, 15 January 2019, Pages 593-606
نویسندگان
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