Dynamic analysis of a nonlinear pressure regulator using bondgraph simulation technique

The dynamics of a direct pressure regulator valve have been studied through bondgraph simulation technique. The governing equations of the system have been derived from the obtained model. While solving the system equations numerically, various pressure-flow characteristics across the regulator ports and the orifices are taken into consideration. The simulation study identifies some critical parameters, which have significant effect on the transient response of the system. The simulation results are determined using the MATLAB-SIMULINK environment. The main novelty of this work is to present an analytic solution in analyzing a nonlinear complex system with interaction of several energy domains. The other conventional attempts employed before this solution resulted to inaccurate simulation results which can not predict the dynamical response of the system. Numerical results implied to the good accuracy of the bondgraph study, while comparing with experimental results.