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| 基于星敏感器角速度估计的陀螺故障诊断 | |
| 引用本文： | 张云,王培垣. 基于星敏感器角速度估计的陀螺故障诊断[J]. 航天控制, 2004, 22(3): 93-96 |
| 作者姓名： | 张云 王培垣 |
| 作者单位： | 上海航天控制工程研究所,上海,200233;上海航天控制工程研究所,上海,200233 |
| 摘 要： | 当星载惯性基准单元 (IMU)正常工作的陀螺的冗余度不满足奇偶方程法条件时 ,无法进行陀螺的故障诊断。本文通过卫星稳态运行期间高精度星敏感器输出的姿态四元数信息 ,根据卫星姿态运动学方程和姿态动力学方程 ,采用非线性广义卡尔曼滤波 (EKF)得到星体角速度的估计值。在此基础上 ,通过设计的故障诊断方案对陀螺故障进行定位。数学仿真验证了这种方法的有效性 |
| 关 键 词： | 陀螺 故障诊断 星敏感器 卡尔曼滤波 |
| 文章编号： | 1006-3242(2004)03-93-04 |
| 修稿时间： | 2003-11-25 |
Fault Diagnosis of Gyroscope Based on Estimated Angular Rate Using Star Sensor |
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| Zhang Yun Wang Peiyuan Shanghai Aerospace Control Engineering Institute,Shanghai. Fault Diagnosis of Gyroscope Based on Estimated Angular Rate Using Star Sensor[J]. Aerospace Control, 2004, 22(3): 93-96 | |
| Authors: | Zhang Yun Wang Peiyuan Shanghai Aerospace Control Engineering Institute Shanghai |
| Affiliation: | Zhang Yun Wang Peiyuan Shanghai Aerospace Control Engineering Institute,Shanghai 200233 |
| Abstract: | When the redundance of the gyroscopes in IMU can not meet the condition of odd-even equation,fault diagnos is can not be realized. In this paper, by using the attitude quaternion from sta r sensor, we acquired the estimated angular rate by EKF, and the n used the diagnosis scheme to diagnose and locate fault. The simulation results testified that this method can diagnose both the hard fault and the soft fault of gyroscopes.< |
| Keywords: | Gyroscope Fault diagnosis Star sensor Kalman filtering |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |