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Designing method of acceleration and deceleration control schedule for variable cycle engine

Chinese Journal of Aeronautics 2021年第5期34卷 27-38页

作者： Linyuan JIA Yuchun CHEN Ronghui CHENG Tian TAN Reran SONG School of Power and Energy Northwestern Poly technical UniversityXi'an 710072China Aero-engine Corporation of China Shenyang Engine Research InstituteShenyang 110066China

Studies show that different geometries of a Variable Cycle Engine(VCE)can be adjusted during the transient stage of the engine operation to improve the engine ***,this improvement increases the complexity of the acceleration and deceleration control *** order to resolve this problem,the Transient-state Reverse Method(TRM)is established in the present study based on the Steady-state Reverse Method(SRM)and the Virtual Power Extraction Method(VPEM).The state factors in the component-based engine performance models are replaced by variable geometry parameters to establish the TRM for a double bypass *** results are compared with the conventional component-based model from different aspects,including the accuracy and the convergence *** TRM is then employed to optimize the control schedule of a *** results show that the accuracy and the convergence rate of the proposed method are consistent with that of the conventional *** the other hand,it is found that the new-model-optimized control schedules reduce the acceleration and deceleration time by 45%and 54%,***,the surge margin of compressors,fuel–air ratio and the turbine inlet temperature maintained are within the acceptable *** is concluded that the proposed TRM is a powerful method to design the acceleration and deceleration control schedule of the VCE.

关键词： Acceleration and deceleration control schedule optimization Steady-state reverse method Transient-state reverse method Variable cycle engine Virtual power extraction method

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