【摘要】 对于弹载捷联惯性系统来说,快速、精确的初始对准技术是其重要的关键技术。通过分析弹载捷联惯性系统对准过程中外界干扰的随机性特点,设计一种基于H∞滤波的两位置对准方法。采用最优两位置对准技术,改善系统的可观测性,利用H∞鲁棒滤波技术,改善系统的鲁棒性。此外,根据实际使用环境条件,假设了三种典型干扰模型,计算机仿真结果表明,这个研究方案不仅满足了导弹快速高精度对准的要求,而且提高了系统的鲁棒性。更多还原

【Abstract】 The fast and precise alignment is very important for the strapdown inertial navigation system(SINS) used in missiles,By analyzing the random characteristic of disturbance,a two-position alignment method of the SINS based on H_∞ robust filter is present.Optimal two-position alignment technology is applied to improve system’s observability,and H_∞ robust filter can be used to improve system’s robustness.Considering the actual environment of SINS’s alignment,three kinds of typical disturbance models are assumed for computer simulation.Simulation’s results show that not only missile alignment’s quickness and high precision,but also system’s robustness is improved by the methods in different environment assumptions.更多还原