Experimental Study on Control Channel of Fluidic Multi-Inputs Wall Attachment Device

In a fluidic circuit, it is desired that each device holds a proper characteristic independent of another device. It is known that a vent in control channel would be useful for that purpose. Although this type of problem has been investigated by some workers, the results are still insufficient to design an optimum control channel. Then, we investigate experimentally the problem on a large scale model of control channel with various vents. The main factors investigated are as follows: (1) the one-way transmissibility and the independency of signals, (2) the power transmissibility from the input nozzle to the control duct, (3) the switching characteristics with respect to the input port, (4) the time-lag of signal transmission, and (5) the comparison of three types of control channels with four input ports. And the relationships between these factors and the geometries of control channel are made clear. The results can serve the purpose of the design of an optimum control channel.