摘要
针对惯性平台静基座初始对准中精度和时间受到试验条件限制的问题,提出了一种通过平台连续旋转的进行快速自对准方法。首先,推导了惯导平台连续旋转过程中的平台失准角模型;然后,采用输出灵敏度理论分析了连续旋转条件下惯导平台系统的可观测性;最后,对设计的平台连续旋转路径进行了仿真试验。仿真结果表明:本文提出的自对准方法突破了传统静态自对准方法中存在的可观测性局限,可快速对失准角进行估计,有效提高了平台对准精度。
Aims at the accuracy and speed of initial alignment of inertial platform restricted by the test conditions,a fast self-alignment method based on continuous rotation is proposed.Firstly,the error model for platform rotation is established.Then,the theory about system＇s output sensitivity for parameters is introduced to analyze the observability of the error model.Finally,the rotation scheme is designed and validated in simulations.The results show that the method proposed can overcome the disadvantage on observability for traditional alignment ways and quickly estimate the misalignment angles with high accuracy.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2011年第12期1468-1473,共6页
Acta Armamentarii
关键词
飞行器控制、导航技术
惯性平台
连续旋转
初始对准
输出灵敏度
control and navigation technology of aerocraft
inertial platform
continuous rotation
initial alignment
output sensitivity
