کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5008349 1461841 2017 9 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling and experimental verification of an impact-based piezoelectric vibration energy harvester with a rolling proof mass
ترجمه فارسی عنوان
مدلسازی و تجربی بر مبنای نیروی ارتعاش پیزوالکتریک مبتنی بر ضربه با یک توده ثابت
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی


- Impact-based VEHs with a rolling proof mass are promising candidates for scavenging low-level, broadband, and low-frequency vibration energy.
- A mathematical model of impact-based piezoelectric VEHs with a rolling proof mass was established for the first time.
- The model agrees well with experimental results.
- The output properties of the harvester are also theoretically and experimentally analyzed.

Impact-based vibration energy harvesters (VEHs) with a rolling proof mass are promising candidates for scavenging ambient low-level, broadband, and low-frequency vibration energy. This paper derives the mathematical model of a VEH with two piezoelectric cantilevers symmetrically located at two open ends of a guiding channel with a rolling steel ball inside as the proof mass. The model includes the equation of motion and coupled electrical circuit equation of the bimorphs under base excitation, the equations of motion of the rolling proof mass under base excitation, and the collision equations between the bimorphs and the proof mass. Simulation results show that the scavenging efficiency of low-level vibration can be improved by introducing the rolling proof mass. The numerical results agree well with the experiments when the harvester prototype is horizontally fixed on the base. Under the base excitation of 1 g(=9.8 m/s2), the maximum output power of one bimorph is about 511 μW at 18.4 Hz.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 259, 1 June 2017, Pages 171-179
نویسندگان
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