摘要
在三轴整体式速率偏频激光陀螺无法进行输出轴冗余配置的情况下,为实现陀螺的元件级故障检测与隔离,提出了由三轴整体式速率偏频激光陀螺和挠性陀螺组构成的双惯性系统的故障检测与隔离方案,给出了双惯性系统的量测方程,并以此为基础推导了用于进行故障检测与隔离的奇偶方程。提出一种基于奇偶方程的双惯性系统故障检测与隔离方法,并针对一类无法用奇偶方程进行隔离的故障,给出一种搜索无故障陀螺输出轴的故障检测与隔离新方法。
The failure of the gyro output axis of the triad rate biased RLG can抰 be detected by traditional parity equations of one inertial measurement system(IMU) because it can抰 be configured redundantly. In order to detect the failure of gyro output axis of triad rate biased RLG, an IMU composed of dynamic tuned gyroscopes are configured as a redundancy system. The output equations of double IMUs are proposed, and on the basis of these equations parity equations of t double IMUs are derived. The method based on parity equations of double IMUs is proposed, which is used to detect and isolate the failure of the gyro output axis of double IMUs, including the gyro output axis of the triad rate biased RLG. A new method to detect and isolate the gyro output axis failure is proposed, which can抰 be isolated by parity equations of double IMUs. It is showed that this method can search the gyro output axis if at least one of two IMUs is not failure.
出处
《中国惯性技术学报》
EI
CSCD
2004年第2期36-39,76,共5页
Journal of Chinese Inertial Technology
基金
863项目(863-705)资助
