Multi-segmented high deformation piezoelectric array

Details Multi-segmented high deformation piezoelectric array Multi-segmented high deformation piezoelectric array

1997-05-09

1998-07-14

Le, Huyen

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electrostrictive, magnetostrictive, or piezoelectric

381173, 310367, H04R 2500

Patent

active

057816468

ABSTRACT:
A multi-segmented flextensional transducer includes a plurality of electroplated electroactive members which deform in concert when energized by an electrical field. Each electroactive member has a convex surface at one end and a concave surface at its opposite end. The electroactive members are arranged end-to-end such that the convex face of each intermediate electroactive member engages the concave face of an adjacent electroactive member, thus forming a cooperative array or "train" of electroactive members. The opposite ends of the train of -electroactive members is received by a frame which holds the end electroactive members in fixed relative position. The electroactive members are high deformation flextensional piezoelectric elements. When energized, each electroactive member individually deforms, and the entire array deforms in concert an amount significantly exceeding that of the individual electroactive members.

REFERENCES:
patent: 4281550 (1981-08-01), Erickson
patent: 5471721 (1995-12-01), Haertling

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