Study on a Fault Tolerant Gyroscope Free-Inertial Navigation System Using 8 Accelerometers

摘要：

In order to achieve the capability for fault tolerating in GF-INS, a novel scheme is proposed based on 8 reasonably deployed accelerometers. The fault tolerant method adopted in the 8-accelerometer GF-INS includes two parts: fault detection and fault identification. According to measurements of 8 accelerometers, a measurement model is built up. A decision variable, relative to the fault variable, is calculated from the measurement model. With the required probability of false alarm and the measurement noise variances, a judgment threshold is decided. If the decision variable is larger than the judgment threshold, a fault is declared to have occurred. Then a fault identification method is ignited. The method computes a probability index for each of the 8 measurements. The accelerometer pertinent to the largest index is believed to the one which has malfunctioned. So the bad accelerometer can be identified and separated.

关键词： Gyroscope Free Inertial Navigation System accelerometer Fault Tolerant

作者: Qin FangJun Xu JiangNing Li An Zhou HongJin

作者单位: Electrical Engineering and Information Engineering College, Naval University of Engineering, Wuhan, College of science, Naval University of Engineering, Wuhan 430033, China

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）