摘要
利用移频技术改进了动柔度简化式在特定频段内精度极低的问题，然后将改进的动柔度简化式用于此频段内的一组特征向量导数的计算取得了很好的效果。当然，此频段内的特征向量个数越多和相对越密集，不仅计算效率越高，而且其精度也越好。不过，太密集了又会出现密集根的特征向量导数计算问题，对此不作讨论。
A new simplified formula of dynamic flexibility is developed by shifting frequency. The simplified formula is applied successfully to the computation of derivatives for a number of eigenvectors. When the number of eigenvectors that need to compute the derivative is large enough, these eigenvectors should be divided into several sets of eigenvectors. Then a shifting frequency value is taken for a set of eigenvectors. Thus, not only the precision of calculation of eigenvector derivatives can be improved, but also the time of computation is not increased seriously. The tactics mentioned above gains good effect.
出处
《导弹与航天运载技术》
1998年第4期36-42,共7页
Missiles and Space Vehicles
关键词
分析
导数
灵敏度
移频
动柔度
Signature analysis, Derivative, Sensibility.
