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为了得到飞行载荷实测所需的最优载荷方程,建立了可表征载荷方程数学意义和物理意义的评估模型,与遗传算法(GA)结合,以载荷方程评估驱动载荷方程建立,形成一种新的载荷方程建立方法——EMGA。通过建立某机翼根部剪力方程,比较了穷尽搜索(ES)法、传统GA和EMGA所建载荷方程的评估模型参数。最后将3种方法建立的方程用于飞行载荷实测。结果发现:和其他两种方法比较,本文提出的EMGA可得到最优的载荷方程;EMGA测得的飞行载荷分散性小,最优载荷方程的测量结果可作为最终的飞行载荷。
In order to obtain the optimal load equation for the flight load measurement, an evaluation model that can describe the mathematical meaning and physical meaning of the load equation is established. Combined with genetic algorithm (GA), the load equation is used to evaluate the driving load equation to establish a new Load equation establishment method --EMGA. By establishing the root shear force equation of a certain wing, the parameters of exhausted search (ES) method and those of traditional GA and EMGA load equations are compared. Finally, the equations established by the three methods are used to measure the flight load. The results show that compared with the other two methods, the EMGA proposed in this paper can obtain the optimal load equation; the EMGA measured flight load is small and the optimal load equation can be used as the final flight load.