Abstract
This paper presents the power transmission characteristics of fluidic circuits composed of unit lengths of parallel capillaries and volumes, for the purpose of synthesizing a fluidic lowpass transmission network having a good attenuation band characteristic.
In this study, two fluidic circuits having a good attenuation band characteristic are produced by means of a mutually cascaded coupling of a unit length of parallel capillaries and a volume: the cut-off frequency is 150Hz. The characteristic curves at the attenuation band rise at a rate of 40dB/dec in the case of a circuit composed of one unit length of parallel capillaries and two volumes, and 60dB/dec in the case of a circuit composed of two unit lengths of parallel capillaries and three volumes. The circuit becomes symmetrical when the internal impedance of signal source RS and the load impedance RL are equal, and unsymmetrical when RS≠RL. The experimental results for these fluidic circuits agree well with predictions from a lumped-parameter theory, even if Ω_??_40.
