Research On Modeling And Control Law Simulation Of Core Engine Machine

In the current world of aeronautical power, by way of the core engine series to research and development of new engine, has already reached a general consensus. The thesis is based on a certain type of engine as the object to research core engine modeling and control of simulation technology,the main contents include:Based on the pneumatic principle of thermodynamics, the thesis has established the core engine of steady, dynamic and starting mathematical model by component method, and aiming at the compressor part of two guide leaves to separate independent regulation, has proposed four-dimensional interpolation compressor performance calculation method for component characteristics.Under the Matlab/Simulink simulation platform, the thesis uses modular method to construct the closed-loop control simulation architecture which contains the core machine and controller model;The thesis has studied the core engine control laws starting from the ground to the above idle state,including main fuel control, nozzle area control, starting control, ignition control and angle control rules etc, and carried out the closed loop control simulation.To carry out the core engine model of closed loop control simulation, the results show that the established core machine model and controller to achieve core engine from the static to the intermediate state smoothly and safely switch, over temperature, overpressure and over speed protection control normal, preliminary reach the expected design requirements.