Abstract
In an analogy of electric circuit theory, a distributed constants pneumatic filter is designed for use as a transmission line matched with an nformation source and a load circuit in fluidics circuit systems. In this study, a low-pass filter is designed from the given approximating function of power attenuation by the following three different methods:
-A method of design by an equivalent transformation from a given lumped constants filter circuit.
-A method of design from an approximating function obtained by the Q-function.
-A method of design by a digital computer compensating for the effect of a line loss.
In the former two methods, the pneumatic circuit is treated as a loss-less one. But in the last method, the loss effect is considered.
Three pneumatic filters are actually synthesized with each method mentioned above and their transmission characteristics are experimentally investigated.
The strengths and weaknesses of these methods are discussed in detail in this paper.
