プランジャ形圧力制御弁の動特性と感度解析

概要

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This paper is concerned with an analytical study of the dynamics of a plunger-type pneumatic pressure control valve, already proposed by the authors, which maintains a constant secondary pressure lower than the primary pressure, in spite of the change of the primary pressure of the fluctuation of the load connected with this valve. At first, the dynamics of the secondary pressure and the plunger movement, caused by changes of the primary pressure and the load, is analyzed by means of the state variables method. Furthermore, for improvement of responsibility, the conditions for adjusting system parameters are found through the root locus method. Next, the sensitivity analysis is applied to the investigation of the influences of parameter variations on the dynamics of the control valve. By means of simulation studies of sensitivity functions, we have shown which parameters are really significant and also which are not. Throughout these analytical and simulation studies, guidelines for improving the performance of a plunger-type pressure control valve are obtained.
1986-09-25