Abstract
This paper deals with the transient phenomena in the branched pneumatic transmission line systems.
The mechanism of pressure wave propagation in the three-lines junction system, or the behavior of incident, reflected and transmited waves is illustrated by using the SFD (Signal Flow Diagram) and the system is formulated on the basis of SFD. Then, the transient characteristics of the system for some cases-i. e. (1) m2=m3=m4=0, (2) m2=m3=0; m4≠0, (3) m2≠0; m3=0; m4≠0, (4) m2≠0; m3≠ 0; m4≠0, where m2 and m3 are the reflection coefficients at the terminals, m4 the reflection coefficient at the junction for input wave-are discussed by using the SFD and the transfer functions. In particular, the second case (m2=m3=0; m4≠0), or the reflection of the pressure wave at the junction is considered on the basis of theoretical and experimental responses to a step input.
