| 摘要 |
PROBLEM TO BE SOLVED: To provide a power generator capable of saving the time for finding the centroid of a power generation plate during resonance.SOLUTION: A power generator 1 for converting an external force into electricity through a power generation element includes a power generation plate 10 consisting of piezoelectric elements 11a, 11b, or constituted by fixing the piezoelectric elements 11a, 11b to a vibration plate 12, a weight 30 for adjusting the eigen frequency of the power generation plate 10, and a spring 20 connected with the power generation plate 10 and the weight 30, and adjusting the centroid of the power generation plate 10 by moving the weight 30 for the power generation plate 10. When the amplitude of the power generation plate 10 is equal to or close to the amplitude of the power generation plate 10 during resonance, the spring 20 stops movement of the weight and holds the stopping state of the weight. |
