Piezoelectric composite beam with automatically adjustable natural frequency
First Claim
1. An energy harvesting system, comprising a composite structure including a first spring, a piezoelectric structure, a proof mass, a natural frequency adjustment device, and a controller, wherein said piezoelectric structure and said proof mass are mounted on said first spring, wherein said composite structure has a composite structure natural frequency of vibration, wherein said controller is connected to automatically adjust said natural frequency adjustment device to adjust said composite structure natural frequency.
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Abstract
An energy harvesting system includes a composite structure that has a first spring, a piezoelectric structure, and a proof mass. The piezoelectric structure and the proof mass are mounted on the first spring. The composite structure has a natural frequency of vibration. The natural frequency of vibration of the composite structure is automatically adjustable.
24 Citations
46 Claims
- 1. An energy harvesting system, comprising a composite structure including a first spring, a piezoelectric structure, a proof mass, a natural frequency adjustment device, and a controller, wherein said piezoelectric structure and said proof mass are mounted on said first spring, wherein said composite structure has a composite structure natural frequency of vibration, wherein said controller is connected to automatically adjust said natural frequency adjustment device to adjust said composite structure natural frequency.
Specification