طراحي سامانه كنترل يكپارچه توان، دور موتور و سينكروفاز هواپيماي دو موتوره توربوپراپ

Design of an Integrated Power, Engine RPM, an‎d Synchrophasing Control System for a Twin-Engine Turboprop Aircraft

مهندسي هوافضا

The aim of this research is to design an‎d simulate an integrated control system for managing power, engine speed, an‎d synchrophasing in a twin turboprop aircraft. To this end, first, a complete nonlinear model of the engine, propeller, an‎d hydromechanical control system was developed in the MATLAB/Simulink environment an‎d was validated with high an‎d appropriate accuracy, in accordance with the analyses performed, using GasTurb software an‎d experimental data extracted from the engine manual an‎d aircraft equipped with this engine. In the controller design section, in order to maintain reliability, a control layer was designed based on generating comman‎ds for the existing hydromechanical system. The results of the relative gain array analysis confirmed the presence of dynamic coupling between the control channels; therefore, to eliminate interactions an‎d improve the transient response, an inverse dynamic decoupler was designed an‎d applied. The simulation findings indicate that the use of classical proportional an‎d proportional–integral controllers alongside the decoupler, during the eva‎luations conducted, while reducing coupling by 90%, provides fast, stable responses with no steady state error. Moreover, the eva‎luation of leader–follower an‎d follower–follower control configurations indicates the superiority of the follower–follower configuration in response speed an‎d in eliminating oscillations in the phase difference between the propellers. By simplifying the control structure, this system, while creating the basis for achieving single lever control, eliminates the need for complex modern methods an‎d demonstrates high efficiency.

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