Global ETD Search
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Showing 1 to 5 of 5 for “"Stiffness nonlinearity"”.
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Force multiplier in a microelectromechanical silicon oscillating accelerometer
… modes of the device are identified, and stiffness nonlinearity in the oscillators is investigated. A method to compensate for thermally induced acceleration errors is also introduced. Testing of the fabricated device is shown to agree with model predictions.
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Ultra wide-bandwidth micro energy harvester
… strain in doubly-anchored beams. The resultant stiffness nonlinearity due to the stretching provides a passive feedback and consequently a wide-band resonance. This wide bandwidth of resonance enables a robust power generation amid the uncertainty of the input vibration spectrum. The device is …
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Nonlinear Analysis and Control of Aeroelastic Systems
… two degree of freedom airfoil section model with stiffness nonlinearity. Three different approaches are developed and discussed. The first approach uses a feedback linearization controller employing the aeroelastic modal coordinates. The use of modal coordinates results in a system which is …
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Data-driven system identification of strongly nonlinear modal interactions and model updating of nonlinear dynamical systems
… one to detect, characterize and model system nonlinearity using existing computational models and experimental data. This task necessitates the synergistic implementation of diverse theoretical, computational and experimental techniques such as multiple-scale and averaging approximations, …
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Ultra-low and wide bandwidth vibrational energy harvesting using a statically balanced compliant mechanism
… This SBCM is designed based on the concept of stiffness compensation between a linear positive-stiffness component (two double parallelograms in parallel) and a nonlinear negative-stiffness component (two sets of post-buckled fixed-guided compliant beams in parallel). A design guideline of the …