| 闭环FOG的自诊断及在RSDIMU中的应用 |
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| 引用本文： | 杨远洪,马静.闭环FOG的自诊断及在RSDIMU中的应用[J].北京航空航天大学学报,1998,24(5):619-622. |
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| 作者姓名： | 杨远洪 马静 |
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| 作者单位： | 北京航空航天大学 宇航学院 |
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| 基金项目： | 国防科工委基金(J1B.6)资助项目 |
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| 摘 要： | 首先阐述了闭环干涉型光纤陀螺(I-FOG)中回路的特点,揭示了它的自诊断能力.由此给出了一种具有自诊断能力的闭环干涉型光纤陀螺并将它应用于一种容错捷联惯性测量单元(RSDIMU)中,针对该单元,设计了一种容错算法.该算法除了利用陀螺的输出外,还引入了它的自诊断信息,从而实现了仪表级的信息冗余,使这种RSDIMU的容错能力由原来的故障运行(FO)-故障运行(FO)-故障安全(FS)上升到FO-FO-FO-FO-FS.用Markov可靠性估计模型对该系统的估计表明,其可靠性也有了很大的提高.
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| 关 键 词： | 故障诊断 光纤陀螺 冗余 惯性测量单元 容错技术 |
| 收稿时间： | 1997-06-02 |
Close-Loop FOG Self-Diagnosing and Application in RSDIMU |
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| Yang Yuanhong,Ma Jing.Close-Loop FOG Self-Diagnosing and Application in RSDIMU[J].Journal of Beijing University of Aeronautics and Astronautics,1998,24(5):619-622. |
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| Authors: | Yang Yuanhong Ma Jing |
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| Institution: | Beijing University of Aeronautics and Astronautics,School of Astronautics |
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| Abstract: | The loop characteristic of close loop interferometer fiber optic gyroscope(I FOG) was studied first and its self diagnosing capability has been reveal. A new type FOG with self diagnosability has been gotten and used in a redundant strapdown inertial measure unit (RSDIMU), and a new fail tolerance algorithm has been designed for this unit too. In this algorithm, both the output and the state information of this FOG were induced, so that the information redundancy at the instrument grade has been realized and the fail tolerance capability was improved from fail operate(FO) fail operate(FO) fail safe(FS) to FO FO FO FO FS. Using Markov reliability evaluation mode, the reliability was calculated, compared with the old system, the reliability was improved greatly. |
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| Keywords: | fault diagnosis fiber optic gyroscopes redundancy nertial measure unit fault tolerance technique |
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