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首頁> 外文學(xué)位 >Validation and implementation of a small signal probing concept for prognosis on nonlinear systems.
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Validation and implementation of a small signal probing concept for prognosis on nonlinear systems.

機譯:驗證和實現(xiàn)用于非線性系統(tǒng)預(yù)后的小信號探測概念。

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Real time monitoring of the control system of a Boeing 747 aircraft (B747) is considered by using a pulse-compression probing method. The method extracts small signal characteristics of the targeted system, and detects deviations from the system's normal behavior with high sensitivity. This thesis demonstrates, through a simulated model of a B747 longitudinal motion, the successful application of the probing method in monitoring a nonlinear dynamic system. The first part of the thesis shows the process of determining suitable probing signals and probing structure for the B747, and discusses the monitoring results for two major types of faults in its actuators. It focuses on validating the effectiveness of the probing method in monitoring nonlinear systems based on the model of the longitudinal motion of B747. The second part of the thesis documents the effort of hardware implementation of the probing algorithm using a field programmable field array (FPGA).
機譯:通過使用脈沖壓縮探測方法,可以對波音747飛機(B747)的控制系統(tǒng)進行實時監(jiān)控。該方法提取目標(biāo)系統(tǒng)的小信號特征,并以高靈敏度檢測與系統(tǒng)正常行為的偏差。本文通過對B747縱向運動的仿真模型,證明了該探測方法在監(jiān)測非線性動力系統(tǒng)中的成功應(yīng)用。本文的第一部分介紹了確定B747合適的探測信號和探測結(jié)構(gòu)的過程,并討論了其執(zhí)行器中兩種主要故障的監(jiān)視結(jié)果。它著重于驗證基于B747縱向運動模型的探測方法在監(jiān)測非線性系統(tǒng)中的有效性。論文的第二部分介紹了使用現(xiàn)場可編程字段陣列(FPGA)在硬件上實現(xiàn)探測算法的工作。

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