基于改进量子粒子群的发动机部件特性修正

摘要

为提高发动机部件特性修正的精度,在分析修正因子法的求解条件以及目标方程的选取原则的基础上,利用部件特性删除法,直接以各部件特性参数作为被优化变量进行特性修正.对于目标函数,提出利用量子粒子群(QPSO)算法优化求解,并针对算法存在早熟收敛的问题进行.改进以涡扇发动机试车试验数据为依据,分别利用改进算法和其他典型算法进行部件特性修正计算.计算和试验结果对比表明,算法要明显优于其他破比较的算法.%In order to improve the accuracy of engine component characteristic map correction, modification factors method for engine components characteristic correction is discussed in this paper. Solving requirements and selecting principle of target equations are analyzed in detail. Based on component characteristic-delete method,characteristic parameters of all components were directly chosen as the to- be- a-dapted parameters. And the objective function is optimized using quantum- behaved particle swarm optimization ( QPSO ). To solve the premature convergence problem of QPSO, an enhanced version of QPSO is proposed. Based on ground test data of an existing turbofan engine,the proposed algorithm and three other typical algorithms were applied in engine components characteristic correction. Comparison between calculated result and test data show the proposed algorithm shows better performance than the others.