000			02044cam a2200337 a 4500
003			EG-GiCUC
005			20250223032312.0
008			190612s2019 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.13.13.M.Sc.2019.Pe.V
100	0		_aPeter Ehab Ayad Ibrahim
245	1	2	_aA variable inertia vibration energy harvester / _cPeter Ehab Ayad Ibrahim ; Supervised Yasser H. Anis , Mustafa H. Arafa
246	1	5	_aضبط حاصدات الطاقة بواسطة القصور الذاتي المتغير
260			_aCairo : _bPeter Ehab Ayad Ibrahim , _c2019
300			_a81 P. : _bcharts , facsimiles ; _c30cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production
520			_aIn this thesis, a novel variable inertia electromagnetic vibration energy harvester is presented. The device is based on a base-excited cantilever with a tip mass whose effective moment of inertia can be adjusted through changing its angular position with respect to the beam. The device is modeled analytically to obtain its natural frequency as a function of the design parameters. The model is also used to predict the device{u2019}s dynamic response and power output. For autonomous operation, a sensor is used to measure the operating frequency and is used in conjunction with a microcontroller to continuously adjust the position of the tuning masses by a servomotor to achieve resonance. A parametric study is performed to investigate the effect of different system parameters on the tunability. Findings of the theoretical model are verified experimentally
530			_aIssued also as CD
653		4	_aEnergy
653		4	_aHarvesting
653		4	_aTuning
700	0		_aMustafa H. Arafa , _eSupervisor
700	0		_aYasser H. Anis , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aAsmaa _eCataloger
905			_aNazla _eRevisor
942			_2ddc _cTH
999			_c72339 _d72339