Bistable composite cantilever beam piezoelectric power generating device
A composite cantilever beam and piezoelectric power generation technology, which is applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problems of poor environmental adaptability, small power generation, and power generation efficiency. Low-level problems, to achieve the effect of wide operating frequency and increase power generation
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[0029] figure 1The structure of the bistable piezoelectric cantilever vibrator in the present invention is shown, including a bimorph piezoelectric cantilever beam 1, and the upper and lower surfaces of the bimorph piezoelectric cantilever beam 1 are respectively pasted with a first piezoelectric layer 2 and a second piezoelectric layer. Two piezoelectric layers 3; the first piezoelectric layer 2 and the second piezoelectric layer 3 have the same width as the elastic beam on the bimorph piezoelectric cantilever beam 1, and the first piezoelectric layer 2 and the second piezoelectric layer The length of the piezoelectric layer 3 is 60% of the length of the elastic beam. The polarization direction of the first piezoelectric layer 2 and the second piezoelectric layer 3 is along the thickness direction of the cantilever beam, such as figure 1 In the direction of the arrow shown in P, the piezoelectric layer is made of piezoelectric ceramic sheets, and electrodes 4 are plated on t...
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