Title :
Network representation for piezoelectric bimorphs
Author :
Ballato, Arthur ; Smits, Jan G.
Author_Institution :
US Army Electron. Technol. & Devices Lab., Ft. Monmouth, NJ, USA
Abstract :
The networks associated with the bimorph matrix are presented. The bimorph matrix is diagonalized and eigenvalues and eigenstates are found for the extremes of nonpiezoelectric and strong piezoelectric coupling. A physical interpretation of the eigenvalues and eigenstates is proposed. The bimorph matrix is also diagonalized through elementary operation matrices, which give the matrix in equivalent form. The transformation matrices are of upper triangular form. This transformation yields networks of the simplest possible connection schemes. It is shown that when fewer than the maximum number of boundary conditions are applied, the networks are easily simplified. The networks of the admittance and impedance matrix are presented.<>
Keywords :
eigenvalues and eigenfunctions; equivalent circuits; matrix algebra; piezoelectric transducers; admittance matrix; bimorph matrix; boundary conditions; eigenstates; eigenvalues; elementary operation matrices; equivalent form; impedance matrix; network representation; nonpiezoelectric coupling; physical interpretation; piezoelectric bimorphs; strong piezoelectric coupling; transformation matrices; upper triangular form; Admittance; Audio systems; Choppers; Eigenvalues and eigenfunctions; Equations; Impedance; Optical pumping; Optical recording; Telephone sets; Telephony;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on