Modeling and Simulation of an Aeroengine Pressure Ratio Regulator

The computer simulation software AMESim is used to establish the object-oriented simulation model and carry out the characteristic simulation research of an Aeroengine Pressure Ratio Regulator in this paper. Mechanical structure and working principle of the pressure ratio regulator is first analyzed. Then the equilibrium equations of flim mechanism, lever-spring mechanism, nozzle control valve mechanism, and nozzle actuator are constructed according to movement rules and principles of flow and force balance. Further, the simulation model of pressure ratio regulator is established on AMESim. Finally, based on the relevant parameters and experimental data, the function and performance of the model are simulated and analyzed. Simulation results show that the model is verified to be correct, realizes the required function, and satisfies the performance basically. Within the scope of work, the steady state simulation results of the model maintain a high degree of agreement with the experimental data. In the stage of engine control system design, this model can provide a theoretical basis for the structural parameter optimization design and control performance analysis of the pressure ratio regulator.