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冗余捷联惯组可以提高运载火箭导航制导系统的可靠性,针对五冗余捷联惯组设计其最优配置方案。方法是基于无故障时系统性能指标函数和发生故障时的导航性能指标函数,对五冗余系统的特殊形态(三正交两斜置结构)进行分析,得到五冗余捷联惯组的最优配置;进一步研究故障发生时对单故障正交轴的重构方法。仿真实例表明,配置方案和重构技术有效,为运载火箭导航制导系统设计提供一种设计思路。
Redundant SINS can improve the reliability of launch vehicle navigation guidance system and design its optimal configuration scheme for five redundant SINS. The method is based on the system performance index function without failure and the navigation performance index function when the failure occurs, and analyzes the special configuration (three orthogonal two skew structures) of the five redundant system to obtain the most The optimal configuration; further research on the reconstruction of a single fault orthogonal axis when the fault occurs. The simulation results show that the configuration scheme and reconstruction technique are effective and provide a design idea for the design of launch vehicle navigation guidance system.