發(fā)布時間：2018-05-27 02:31

  本文選題：復(fù)合傳感器 + 電感傳感器　； 參考：《中國民航大學(xué)》2015年碩士論文

【摘要】：油液監(jiān)測是監(jiān)測航空發(fā)動機健康狀況的重要方法之一。多數(shù)航空發(fā)動機故障是由零部件異常磨損造成的,異常磨損產(chǎn)生的磨粒較大,由此為實現(xiàn)故障診斷及預(yù)警可以對滑油中的大磨粒進(jìn)行監(jiān)測,通過傳感器輸出信號來判定磨損類型與位置,進(jìn)而得出發(fā)動機健康狀況�，F(xiàn)有的傳感器測量范圍窄,本文基于對電感和電容傳感器的研究,提出了監(jiān)測范疇更廣的新型復(fù)合傳感器。首先利用ANSYS有限元分析軟件分別對三線圈電感傳感器和三環(huán)極板差動電容傳感器進(jìn)行建模分析。然后通過對不同磨粒的大小、位置、材質(zhì)等屬性和傳感器自身的結(jié)構(gòu)參數(shù),比如寬度、厚度、間距等,進(jìn)行仿真驗證,得出傳感器輸出特性,并優(yōu)化了傳感器結(jié)構(gòu)。最后提出復(fù)合式傳感器,對三種復(fù)合方案仿真實驗,對比分析各方案的優(yōu)缺點,得出最優(yōu)方案。仿真結(jié)果證明復(fù)合式傳感器的感應(yīng)電壓可以達(dá)到mV級,監(jiān)測電容達(dá)pF級。復(fù)合式傳感器可以監(jiān)測導(dǎo)電類和非導(dǎo)電類、鐵磁性與非鐵磁性磨粒,不僅擴(kuò)大了監(jiān)測范圍,為故障診斷與評估提供可靠依據(jù),還為信息融合提供可能,以上實驗結(jié)果證明了復(fù)合傳感器的可行性和科研價值。
[Abstract]:Oil monitoring is one of the important methods to monitor the health status of aeroengine. Most aero-engine faults are caused by abnormal wear of parts and components, and the abrasive particles produced by abnormal wear are larger. Therefore, in order to realize fault diagnosis and early warning, the large abrasive particles in the oil can be monitored. The wear type and position are determined by the sensor output signal, and then the engine health condition is obtained. The existing sensors have a narrow range of measurements. Based on the research of inductance and capacitance sensors, a new type of composite sensors with wider monitoring scope is proposed in this paper. Firstly, the three-coil inductance sensor and the three-ring pole plate differential capacitance sensor are modeled and analyzed by ANSYS finite element analysis software. Then the output characteristics of the sensor are obtained and the sensor structure is optimized by simulating the properties of different abrasive particles such as size position and material quality and the structural parameters of the sensor such as width thickness spacing and so on. Finally, a composite sensor is proposed, and the optimal scheme is obtained by comparing and analyzing the advantages and disadvantages of each scheme. The simulation results show that the inductive voltage of the composite sensor can reach MV level and the monitoring capacitance reaches PF level. Composite sensors can monitor conductive and non-conductive abrasive particles, ferromagnetic and non-ferromagnetic abrasive particles, which not only expand the monitoring scope and provide reliable basis for fault diagnosis and evaluation, but also provide the possibility for information fusion. The experimental results above prove the feasibility and scientific research value of the composite sensor.
【學(xué)位授予單位】：中國民航大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：V263.6;TP212

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本文編號：1940054