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论文:2019,Vol:37,Issue(6):1158-1164 |
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引用本文： |
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胡迪, 刘丹, 白光明. 基于UKF的卫星星敏故障检测算法研究[J]. 西北工业大学学报 |
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HU Di, LIU Dan, BAI Guangming. Study on Fault Detection of Star-Sensor Based on UKF[J]. Northwestern polytechnical university |
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| 基于UKF的卫星星敏故障检测算法研究 |
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| 胡迪, 刘丹, 白光明 |
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| 中国空间技术研究院 通信卫星事业部, 北京 100094 |
| 摘要: |
| 针对通信卫星在轨运行后无陀螺遥测数据的星敏故障问题，提出一种基于无迹卡尔曼滤波（unscented kalman filter，UKF）的故障检测算法，将卫星角速度纳入状态方程进行估计，采用2个星敏的输出数据作为测量方程，通过分别比对正常时段和故障时段下卫星角度的稳定值与其估计值、角速度的稳定值与其估计值，可以准确检测出星敏数据故障。针对在轨可能出现的2种故障工况（突变故障、噪声变大故障）进行了仿真，并进一步采用在轨遥测数据进行了试验验证，仿真和试验验证结果均表明，该算法能有效检测出星敏数据故障，可用于地面对在轨星敏数据进行故障监测，以便发现故障后及时进行报警处理。 |
| 关键词:
UKF
星敏
故障检测
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| Study on Fault Detection of Star-Sensor Based on UKF |
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| HU Di, LIU Dan, BAI Guangming |
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| Institute of Telecommunication Satellite, CAST, Beijing 100094, China |
| Abstract: |
| The fault detection of star sensor in satellite when no telemetry data from the gyroscope can be obtained is investigated. An algorithm based on the unscented Kalman filter (UKF) is proposed to indicate the occurrence of the fault. By adding the angular speed of the satellite into the state equation, the UKF is designed to estimate the angular and the angular speed of the satellite. After that, a comparison between the measured and the estimated value of both the angular and the angular speed is made. In this way, the star sensor fault can be finally detected. Two fault cases (abrupt constant fault and noise increase fault) are taken into consideration in the simulation to show the validness of the present algorithm. Furthermore, a test verification by using the real telemetry data on orbit is performed to demonstrate that the present algorithm can detect the star sensor fault effectively. In application, the developed fault detection algorithm can be employed in the ground measurement and control station to monitor the star sensor fault such that the fault can be detected immediately and the alarm indicating the occurrence of the fault will be given. |
| Key words:
unscented kalman filter(UKF)
star-sensor
fault detection
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| 收稿日期: 2018-12-16
修回日期:
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| DOI: 10.1051/jnwpu/20193761158 |
| 通讯作者:
Email： |
| 作者简介: 胡迪(1984-),中国空间技术研究院高级工程师、博士,主要从事飞行器总体设计、数据分析等研究。
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| 相关功能 |
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| 作者相关文章 |
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| 胡迪 在本刊中的所有文章 |
| 刘丹 在本刊中的所有文章 |
| 白光明 在本刊中的所有文章 |
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