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带有大型帆板、大量推进剂的航天器挠性模态阶数可以达到上百阶,其挠性动力学要实现毫秒级周期迭代运算,需要高性能的计算机。基于挠性模态η和星体转动ω解耦、局部迭代等措施避免迭代误差导致挠性动力学运算发散,解耦后的挠性动力学模型参数K_1,K_2,I~(-1)等可以离线计算,从而减小了迭代计算量,降低了对计算机的性能要求,且易于工程实现。仿真验证了解耦及迭代运算方法的有效性,仿真结果表明计算速度可以提高约2个数量级。
Spacecraft with large windsurfing, a large number of propellants can reach hundreds of orders of flexible mode order, and its flexible kinetics to achieve millisecond-cycle iterative computing, high performance computer. Based on the decoupling between the flexible mode η and the rotating body ω, the local iteration and other measures to avoid the iterative error cause the divergence of the flexible dynamic model. The decoupled models of the flexible dynamic model K_1, K_2, I -1 Off-line calculation, thus reducing the iterative calculation, reducing the performance requirements of the computer, and easy to implement. Simulation shows the effectiveness of decoupling and iterative methods. The simulation results show that the computational speed can be increased by about two orders of magnitude.