CAJ | 학술논문

利用COMSOL有限元软件搭建油气润滑系统电容层析成像（ ECT）的阵列电极三维管道模型，得到阵列电极在不同阵列电极结构参数下的电势云图，并求出空场满场的三维阵列电极的电容值。根据油气润滑系统小管径的管道特点，推导出一种适合油气润滑系统阵列电极三维管道内快速计算灵敏度场的计算表达式；定义横向灵敏性和灵敏度均匀性2个评价指标，并结合传统的阵列电极的灵敏度、被测电容的变化范围2个评价指标对油气润滑系统空间ECT阵列电极进行特性分析。结果表明：经过特性分析的空间ECT阵列电极可获得比较均匀的灵敏度分布和较好的检测灵敏性。该结果将为油气润滑系统ECT阵列电极的后期加工制作提供依据。
이용COMSOL유한원연건탑건유기윤활계통전용층석성상（ ECT）적진렬전겁삼유관도모형，득도진렬전겁재불동진렬전겁결구삼수하적전세운도，병구출공장만장적삼유진렬전겁적전용치。근거유기윤활계통소관경적관도특점，추도출일충괄합유기윤활계통진렬전겁삼유관도내쾌속계산령민도장적계산표체식；정의횡향령민성화령민도균균성2개평개지표，병결합전통적진렬전겁적령민도、피측전용적변화범위2개평개지표대유기윤활계통공간ECT진렬전겁진행특성분석。결과표명：경과특성분석적공간ECT진렬전겁가획득비교균균적령민도분포화교호적검측령민성。해결과장위유기윤활계통ECT진렬전겁적후기가공제작제공의거。
The three?dimensional pipe model on Electrical Capacitance Tomography’ s( ECT’ s) array electrodes was built by COMSOL, the potential cloud was obtained under different array electrode structures, the capacitance values of three?dimensional electrodes were solved in the case of empty field and full field respectively, and an expression used to calculate quickly sensitivity filed was deduced according to the characteristics of small pipe in oil?air lubrication system. The lateral sensitivity and the sensitivity homogeneity were defined and employed to evaluate ECT′s array electrode charac?terization of oil?air lubrication system, combined with another two traditional assessment index, the sensitivity and the range of measured capacitance values. The results show that the sensitivity of relatively uniform distribution and better de?tection sensitivity can be obtained by analyzing characteristics of ECT’ s array electrode. This research provides a basis for design and manufacture of ECT’ s array electrode of the oil?air lubrication system.