摘要
针对XTE76变循环发动机的控制结构问题,研究了2分块之间进行解耦的控制方法。基于内模原理,设计状态反馈控制器结构,以无超调快速跟踪和耦合抑制为目标,提出了改进的非支配序自组织迁移(NS-SOMA)多目标优化算法,在每代中按照与领导者的欧式距离均匀选择粒子进行迁移,提高了算法的收敛速度和精度,以此优化控制器参数,有效抑制了分块之间的耦合。同时研究了变循环发动机不分块的3变量控制方法,直接通过多目标优化抑制回路之间的耦合效应。在某型变循环发动机部件级模型上进行仿真验证,结果表明:不分块结构优于其他2种结构,相比分块控制结构,引起的最大耦合降低了30%,说明多变量综合控制更能充分利用现代控制理论解决回路之间的耦合问题。
Aiming at the control structure problem of XTE76 variable cycle engine,the decoupling control method between two blocks was studied.The structure of state feedback controller was designed based on the internal model principle.Aiming at non-overshoot fast tracking and coupling suppression,an improved multi-objective optimization algorithm of Non-dominant Sorting Self-organizing Migration Algorithm(NS-SOMA)was proposed.The convergence speed and precision of the algorithm were improved by selecting migration particles evenly according to the Euclidean distance from the leader in each generation.In this way,the parameters of the controller were optimized,and the coupling between the blocks was effectively suppressed.Meanwhile,the three variable control method without blocking of variable cycle engine was studied,and the coupling between loops was suppressed directly by multi-objective optimization.The simulation verification was carried out based on component level model of a certain variable cycle engine.The results show that the structure without blocking is superior to the other two structures.Compared with the blocking control structure,the maximum coupling is reduced by 30%,which indicates that multivariable integrated control can make full use of the modern control theory to solve the coupling problem between loops.
作者
何凤林
李秋红
陈尚晰
HE Feng-lin;LI Qiu-hong;CHEN Shang-xi(Jiangsu Province Key Laboratory of Aerospace Power System,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《航空发动机》
北大核心
2019年第4期20-26,共7页
Aeroengine
基金
国家自然科学基金(51576096)资助
