Computer Aided Design for Fluidic Sequential Circuits of Fundamental Mode

TL;DRAbstract

This thesis presents the method of state diagram synthesis and the development of a computer program for designing fluidic sequential feedback control circuits of the fundamental mode. A paper on state diagram synthesis was authored by Chen and Lee, presented in Detroit and published as ASME paper 73-WA/Flcs-2 in 1973. Hypothetical systems are illustrated by using series of events characterized by the piston positions of some double-acting pneumatic cylinders. In these systems , an action can only begin when the previous action has been completed. Every extension or retraction of a piston is memorized and manifested by a flip-flop element in the feedback circuit. If different combinations of control signals result from different combinations of feedback signals, the logic design is straightforward. Otherwise secondary variables are needed to differentiate between repeated appearances of some ambiguous input combinations. A secondary variable is obtained as the output of a fluidic flip-

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