電わい駆動縦振動子の等価諸定数値に関する考察

概要

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This paper deals with the resonant frequency, resonant mode and the equivalent constants of longitudinal vibrator excited electrostrictively.　The longitudinal vibrator used here vibrates in the first mode, and excited by the electrostrictive materials bonded on the both ends of the metal rod.　This longitudinal vibrator is suitable for a transducer-resonator of the narrowband mechanical filter, because this vibrator exhibits excellent properties as compared with the Langevin type vibrator in terms of high Q, low temperature coefficient and the employment of an ordinary metal rod for coupler.　But in general the impedance of electrostrictive materials bonded to drive the metal rod cannot be neglected as compared with the impedance of the metal rod.　When the impedance of the electrostrictive material is not negligible, the resonant frequency and the resonant mode of longitudinal vibrator differ from those of the metal rod only. Therefore the mechanical filter with the use of the electrostrictive transducer-resonator must be designed after due consideration of the effects of impedance of the electrostrictive material.　This vibrator is analyzed by the use of the analogy between mechanical system and electrical networks.　The calculation results and the experimental results of the transducer-resonator are shown in this paper.
山形大学の論文
1968-01-20