捷联惯导可靠性的均衡向量及其补偿方法

The Method of the Parity Vector of Strapdown Inertia Navigation in Reliability and its Compensation

本文用均衡向量(Parity Vector)讨论了捷联惯导的可靠性问题,建立均衡方程,利用假设检验求取故障检测的决策函数和隔离函数。重点研究了均衡向量的补偿方法,应用卡尔曼滤波对均衡向量的补偿,实现了用常值门限进行故障检测和隔离,提高了故障检测能力。

In this paper is discussed the problem of the parity vector of strapdown inertia navigation in reliability,the parity equation is derived.The hypothesis approach to failure detection decision func- tion and failure isolation function is used.Emphasis is placed on Kal- man Filter method to estimate dynamic error and other error,further parity vector is compensated,in this case the failure detection and fai- lure isolation is performed by means of Constant-Valure threshold,so the ability of failure detection is enhanced.