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dc.contributor.authorLumentut, Mikail
dc.contributor.authorHoward, Ian
dc.identifier.citationLumentut, M. and Howard, I. 2015. Effect of shunted piezoelectric control for tuning piezoelectric power harvesting system responses – Analytical techniques. Smart Materials and Structures. 24: 105029.

This paper presents new analytical modelling of shunt circuit control responses for tuning electromechanical piezoelectric vibration power harvesting structures with proof mass offset. For this combination, the dynamic closed-form boundary value equations reduced from strong form variational principles were developed using the extended Hamiltonian principle to formulate the new coupled orthonormalised electromechanical power harvesting equations showing combinations of the mechanical system (dynamical behaviour of piezoelectric structure), electromechanical system (electrical piezoelectric response) and electrical system (tuning and harvesting circuits). The reduced equations can be further formulated to give the complete forms of new electromechanical multi-mode FRFs and time waveform of the standard AC-DC circuit interface. The proposed technique can demonstrate self-adaptive harvesting response capabilities for tuning the frequency band and the power amplitude of the harvesting devices. The self-adaptive tuning strategies are demonstrated by modelling the shunt circuit behaviour of the piezoelectric control layer in order to optimise the harvesting piezoelectric layer during operation under input base excitation. In such situations, with proper tuning parameters the system performance can be substantially improved. Moreover, the validation of the closed-form technique is also provided by developing the Ritz method-based weak form analytical approach giving similar results. Finally, the parametric analytical studies have been explored to identify direct and relevant contributions for vibration power harvesting behaviours.

dc.publisherInstitute of Physics Publishing
dc.subjectpower harvesting
dc.subjectfrequency response
dc.subjectsignal analysis
dc.subjecttime waveform
dc.subjectshunt control
dc.subjectAnalytical closed form and weak form
dc.titleEffect of shunted piezoelectric control for tuning piezoelectric power harvesting system responses – Analytical techniques
dc.typeJournal Article
dcterms.source.titleSmart Materials and Structures

This is an author-created, un-copy edited version of an article accepted for publication in Smart Materials and Structures. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at

curtin.departmentDepartment of Mechanical Engineering
curtin.accessStatusOpen access
curtin.contributor.orcidHoward, Ian [0000-0003-3999-9184]

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