Method of driving piezoelectric bimorph device and piezoelectric

Details Method of driving piezoelectric bimorph device and piezoelectric Method of driving piezoelectric bimorph device and piezoelectric

1992-01-30

1993-08-03

Stephan, Steven L.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310332, 310366, H01L 4108

Patent

active

052332560

ABSTRACT:
A method of driving a piezoelectric bimorph device in which first and second piezoelectric ceramic layers are so electrically connected to each other as to expand or contract in the opposite directions, which is characterized in that when t.sub.1 is taken as the thickness of one of the first and second piezoelectric ceramic layers, Ec is taken as the coercive field strength of a piezoelectric material constituting the piezoelectric ceramic layer, and V.sub.1 is taken as the minimum value of the produce Ec.times.t.sub.1 =Vc.sub.1, and t.sub.2 is taken as the thickness of the other piezoelectric ceramic layer, Ec is taken as the coercive field strength Ec of a piezoelectric material constituting the piezoelectric ceramic layer, and V.sub.2 is taken as the minimum value of the produce Ec.times.t.sub.2 =Vc.sub.2, a voltage of not less than (V.sub.1 +V.sub.2) is applied to said piezoelectric bimorph device.

REFERENCES:
patent: 4564782 (1986-01-01), Ogawa
patent: 4649313 (1987-03-01), Ogawa et al.
patent: 4742264 (1988-05-01), Ogawa
patent: 4759107 (1988-07-01), Ogawa et al.
patent: 4851871 (1989-07-01), Ooe et al.
patent: 4985926 (1991-01-01), Foster
patent: 5034649 (1991-07-01), Chida et al.
patent: 5068567 (1991-11-01), Jones
patent: 5118982 (1992-06-01), Inoue et al.

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