L-L形振動方向変換体の電気的等価回路

概要

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The resonator with directional converter was analyzed already. However, the converter is usually used as an element in a system of a vibrational transformation rather than a separate devics ; so that, it will be very convenient for understand a vibrational system as a whole, if the converter can be represented by an electrical equivalent circuit. From this point of view, the authors tried to analyze a L-L-type converter by its electrical equivalent circuit. The converter was divided in two principal parts, each part of four bars and one connecting part. Each part of bars was expressed by a four-terminal network of a distributed constant circuit and a connecting part was expressed by a four-terminal network of a concentrated or lumped constant circuit. Then the converter was indicated by four terminal network (see Fig. 2〜5), as vibrational modes of the converter in resonances were symmetric with respect to two axes. Thus, the frequency equation (35) and the equation (37) of the vibrational velocity ratio at each free end of the converter were derived. From this study, it was found, by referring to the other report, that these two equations were applicable to the converter with the connecting part which is small enough as compared with a wavelength of two axial directions, and were able to describe well its vibrational characteristics also.
社団法人日本音響学会の論文
1973-08-01