کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4977096 1451847 2017 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Identifying the nonlinear mechanical behaviour of micro-speakers from their quasi-linear electrical response
ترجمه فارسی عنوان
شناسایی رفتار غیرخطی مکانیکی میکرو بلندگو از پاسخ الکتریکی شبه خطی آنها
کلمات کلیدی
محرک غیر خطی، میکرو بلندگو غیرخطی، شناسایی تغییرات غیر خطی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی


- Identification of the nonlinear dynamics of micro-speakers.
- Identification of mechanical damping from electrical measurements.
- Analytical formulation of the quasi-linear response of a micro-speaker.

In this study model identification of the nonlinear dynamics of a micro-speaker is carried out by purely electrical measurements, avoiding any explicit vibration measurements. It is shown that a dynamic model of the micro-speaker, which takes into account the nonlinear damping characteristic of the device, can be identified by measuring the response between the voltage input and the current flowing into the coil. An analytical formulation of the quasi-linear model of the micro-speaker is first derived and an optimisation method is then used to identify a polynomial function which describes the mechanical damping behaviour of the micro-speaker. The analytical results of the quasi-linear model are compared with numerical results. This study potentially opens up the possibility of efficiently implementing nonlinear echo cancellers.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volume 88, 1 May 2017, Pages 212-223
نویسندگان
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