Abstract Many of energy harvesting devices use piezoelectric elements to convert mechanical vibrations into usable electrical energy. The input excitation is usually assumed to be a deterministic harmonic wave, while in practical situations; the mechanical excitation of the media is a random signal. The objective of this research is to study the energy harvesting in piezoelectric devices using the random vibration theory. At the first step a lumped parameter physical model of the device is presented. A mathematical model is then developed by obtaining the normalized differential equations governing the voltage induced in the energy harvesting circuit as well as the length of the piezoelectric material. The random vibration theory is then utilized to derive analytical expressions for the statistical properties of the voltage, power and the length of the piezoelectric material in terms of the statistical properties of the excitation which is assumed to be a band limited white noise. It is shown that with proper selection of the system parameters, the expected value of the harvested power can be effectively maximized. The qualitative and quantitative knowledge resulting from this effort is expected to enable the analysis, optimization, and synthesis of piezoelectric energy harvesting devices.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Logic Analytical Modeling of Piezoelectric Energy Harvesters under Random Base Excitation


    Contributors:


    Publication date :

    2017-01-01


    Size :

    11 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




    Nanostructured piezoelectric energy harvesters

    Briscoe, Joe / Dunn, Steve | TIBKAT | 2014


    Analytical modeling and effectiveness of low-frequency piezoelectric energy harvesters with dual magnetic forces

    Zimmerman, Sandra J. / Abdelmoula, Hichem / Abdelkefi, Abdessattar | AIAA | 2017


    Analysis of Tristable Energy Harvesters Under Random Excitations

    Kumar, A. / Ali, Shaikh Faruque / Arockiarajan, A. | TIBKAT | 2020


    Numerical and Experimental Comparison of Bistable and Monostable Vibration Energy Harvesters Under Broadband Random Excitation

    Zhao, S. / Erturk, A. / American Institute of Aeronautics and Astronautics; American Society of Mechanical Engineers; American Society of Civil Engineers | British Library Conference Proceedings | 2013