کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
510544 865773 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A method for simultaneous identification of the full nonlinear damping and the phase shift and amplitude of the external harmonic excitation in a forced nonlinear oscillator
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
A method for simultaneous identification of the full nonlinear damping and the phase shift and amplitude of the external harmonic excitation in a forced nonlinear oscillator
چکیده انگلیسی

We propose a new general method that is able to clarify the simultaneous identification of the full nonlinear damping characteristics as well as the phase shift and amplitude of the external harmonic excitation in a forced nonlinear single degree system. The method is the non-parametric identification based on the concept of zero-crossings regarding the system responses. It involves an integral equation of the first kind, resulting in the lack of stability properties. The difficulty of instability is overcome by the stabilization technique. The workability of the proposed method is demonstrated through a numerical experiment consisting of a highly nonlinear system.


► We propose a new general method involving the nonlinear system identification.
► It concerns the simultaneous identification in a forced nonlinear system.
► It can identify the phase shift and amplitude of the external harmonic excitation.
► In addition to that, it can also identify the full nonlinear damping.
► The identification proposed in this study is non-parametric.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volume 120, 15 April 2013, Pages 77–85
نویسندگان
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