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本文针对某型导弹由两级固体火箭发动机组成的联合动力装置进行九变量寻优计算.通过采用二维抛物线插值方法及合理组织迭代的技巧,解决了庞大的目标函数计算子程序耗时太多的问题;经大量调试,协调寻优步长、罚因子、收敛精度,最后成功地完成了本文的九维寻优计算,得到了能稳定收敛的最优解.所得最优方案比原参考方案的发动机总重减轻7.03kg(约占总重的2%).
In this paper, a certain missile is composed of two-stage solid rocket motor combined power plant for nine variable optimization calculation.Through the use of two-dimensional parabolic interpolation method and the reasonable organization of iterative skills to solve the huge objective function calculation subroutine time-consuming too much After a large number of debugging, coordination of optimization steps, penalty factor, convergence accuracy, and finally successfully completed nine-dimensional optimization of this paper, the optimal solution can be stabilized and converged. The optimal solution obtained than the original reference program The engine gross weight to reduce 7.03kg (about 2% of total weight).