التفاصيل البيبلوغرافية
| العنوان: |
Fault Prediction for Rotating Mechanism of Satellite Based on SSA and Improved Informer. |
| المؤلفون: |
Lan, Qing, Zhu, Ye, Lin, Baojun, Zuo, Yizheng, Lai, Yi |
| المصدر: |
Applied Sciences (2076-3417); Oct2024, Vol. 14 Issue 20, p9412, 18p |
| مصطلحات موضوعية: |
PREDICTION models, SPECTRUM analysis, THRESHOLD energy, POWER resources, ANTENNAS (Electronics) |
| مستخلص: |
The rotational mechanism, which plays a critical role in energy supply, payload antenna pointing, and attitude stabilization in satellites is essential for the overall functionality and performance stability of the satellite. This paper takes the space turntable of a specific satellite model as an example, utilizing high-frequency and high-dimensional telemetry data. An improved informer model is used to predict and diagnose features related to the turntable's operational health, including temperature, rotational speed, and current. In this paper, we present a forecasting method for turntable temperature data using a hybrid model that combines singular spectrum analysis with an enhanced informer model (SSA-Informer), comparing the results with threshold limits to determine if faults occur in the satellite's rotational mechanism. First, during telemetry data processing, singular spectrum analysis (SSA) is proposed to retain the long-term and oscillatory trends in the original data while filtering out noise from interference. Next, the improved informer model predicts the turntable temperature based on the mapping relationship between the turntable subsystem's motor current and temperature, with multiple experiments conducted to obtain optimal parameters. Finally, temperature thresholds generated from the prediction results are used to forecast faults in the rotational mechanism over different time periods. The proposed method is compared with current popular time-series prediction models. The experimental results show that the model achieves high prediction accuracy, with reductions of at least 10% in both the MAE and MSE than CNN-LSTM, DA-RNN, TCN-SE and informer, demonstrating the outstanding advantages of the SSA and improved informer-based method in predicting temperature faults in satellite rotational mechanisms. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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