捷联惯性测量装置角速度通道动态特性辨识

Dynamic Characteristics Identification of Angular Velocity Channel for Strapdown Inertial Measurement Unit

动态特性是评价捷联惯性测量装置的核心技术指标。以某一型号光纤捷联惯性测量装置(含减振器)为研究对象,通过角振动试验和数据分析,结合频域子空间算法与遗传算法,建立了基于捷联惯性测量装置整机角速度通道传递函数模型,为捷联惯性测量装置整机动态性能应用评估奠定了技术基础,方法得到了比传统方法更好的结果,更适合实际工程应用。

The dynamic characteristics is the core technology index of the evaluation of strapdown inertial measurement unit. A certain type of optical fiber strapdown inertial measurement unit （ including shock absorber） is regarded as the research object, through the angle vibration test and data analysis, the transfer function model for the whole inertial angular velocity measuring device channel is established in an identification method combined with frequency domain subsystem algorithm and genetic algorithm. The method gets better results than traditional methods, and is more suitable for practical application. This method lays a technical foundation for the application of dynamic performance of strapdown inertial measurement unit overall evaluation.