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Due to that some parameters are unable to be measured in orbit, it is difficult to establish a precise physical model for in-orbit satellite flywheel. Aiming at this issue, a telemetry-data-based model for anomaly detection is proposed. The model considers only the main parameters that are closely related to the operating condition of the flywheel. Then, the prediction model is trained and tested...
This paper studies of the theoretical and practical application of the Automatic Throttle Control System from the perspective of System Dynamic Theory. Through the simulation of a flying vehicle in a state of automatic approach, we show the design thought and the importance of the Automatic Throttle Control System.
Reliability analysis based on failure mechanism takes advantage of unnecessary requirement for the field data, compared with the traditional method based on probability statistics. Current reliability analysis for systems based on failure dependence mainly focus their views on either failure level or failure process level, but barely from the aspect of failure mechanism. Our previous work used Mechanism...
Reliability study of electronic system with the physics-of-failure method has been promoted due to the increase knowledge of electronic failure mechanisms. System failure initiates from independent failure mechanisms, have effect on or affect by other failure mechanisms and finally result in system failure. Failure mechanisms in a non-repairable system have many kinds of correlation. One failure mechanism...
Board level package reliability under mechanical shock has always been a great concern for mobile electronic products. As a result of “short to market” demand for new electronic products, a great effort has always been made towards developing more efficient methods for reliability assessments. This paper presents a board level mechanical reliability test method based on harmonic vibration. Numerical...
Accidentally drop induced board level intercom-nects break has become one of the most important failure modes for portable electronic products. Board level drop impact test is widely used to evaluate the mechanical shock reliability of electronic assembly interconnects. In this paper, PCB responses during drop impact and vibration shock are compared using strain measurements. The loading similarities...
This paper presents the ground vehicle imaging test of the airborne SAR system, shows the imaging results through point targets simulation in detail, analyses the effects of slow SAR platform based on ground vehicle imaging results. Finally, the analysis and scheme are validated by the results on vehicle imaging.
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