机械工程学报
機械工程學報
궤계공정학보
CHINESE JOURNAL OF MECHANICAL ENGINEERING
2014年
20期
167-173,174
,共8页
宋月超%徐兵%杨华勇%刘英杰
宋月超%徐兵%楊華勇%劉英傑
송월초%서병%양화용%류영걸
“二次源”法%泵源阻抗%线性衰减技术
“二次源”法%泵源阻抗%線性衰減技術
“이차원”법%빙원조항%선성쇠감기술
secondary source method%source impedance%weighted linear regression technique
针对现有“二次源”法在参考管道上传感器距离是压力波波长整数倍时，泵源估值精度较低，且整个数据处理过程繁琐复杂、费力耗时，导致其不适于工业应用的问题，提出泵源阻抗估值算法优化模型，并应用Matlab/GUI模块编写一套“二次源”法数据处理平台软件，在提高泵源流量脉动的测试精度的同时简化“二次源”法数据处理过程。介绍柱塞泵标准“二次源”法的测试原理，对比几种泵源阻抗估值方法的特点，应用 Matlab/GUI 模块开发优化的“二次源”法数据处理软件，并进行试验验证。结果表明，相比分布参数法，线性衰减技术能够估测全频率处柱塞泵泵源阻抗，估值效率提高了70%；在保证测试精度的情况下，“二次源”法测试软件简化了标准“二次源”法数据处理过程并节省了80%的计算时间，为“二次源”法的工业应用提供技术支撑。
針對現有“二次源”法在參攷管道上傳感器距離是壓力波波長整數倍時，泵源估值精度較低，且整箇數據處理過程繁瑣複雜、費力耗時，導緻其不適于工業應用的問題，提齣泵源阻抗估值算法優化模型，併應用Matlab/GUI模塊編寫一套“二次源”法數據處理平檯軟件，在提高泵源流量脈動的測試精度的同時簡化“二次源”法數據處理過程。介紹柱塞泵標準“二次源”法的測試原理，對比幾種泵源阻抗估值方法的特點，應用 Matlab/GUI 模塊開髮優化的“二次源”法數據處理軟件，併進行試驗驗證。結果錶明，相比分佈參數法，線性衰減技術能夠估測全頻率處柱塞泵泵源阻抗，估值效率提高瞭70%；在保證測試精度的情況下，“二次源”法測試軟件簡化瞭標準“二次源”法數據處理過程併節省瞭80%的計算時間，為“二次源”法的工業應用提供技術支撐。
침대현유“이차원”법재삼고관도상전감기거리시압력파파장정수배시，빙원고치정도교저，차정개수거처리과정번쇄복잡、비력모시，도치기불괄우공업응용적문제，제출빙원조항고치산법우화모형，병응용Matlab/GUI모괴편사일투“이차원”법수거처리평태연건，재제고빙원류량맥동적측시정도적동시간화“이차원”법수거처리과정。개소주새빙표준“이차원”법적측시원리，대비궤충빙원조항고치방법적특점，응용 Matlab/GUI 모괴개발우화적“이차원”법수거처리연건，병진행시험험증。결과표명，상비분포삼수법，선성쇠감기술능구고측전빈솔처주새빙빙원조항，고치효솔제고료70%；재보증측시정도적정황하，“이차원”법측시연건간화료표준“이차원”법수거처리과정병절성료80%적계산시간，위“이차원”법적공업응용제공기술지탱。
It is a fact for the secondary source method that the pump source impedance can’t be computed with the current estimation algorithm when the transducer length of the reference pipe is multiple times of the pressure wavelength, and the signal processing is complicated and time consuming, so the secondary source method is inapplicable in industry. For solving the problem, a new estimation algorithm of the pump source is discussed, and a signal processing software based on Matlab/GUI for secondary source method is designed. The test principle of the secondary source method is depicted, and then several evaluation methods of source impedance (such as the linear interpolation method, the weighted linear regression technique and the distributed-parameters method) and its application are discussed. With the Matlab/GUI, a signal processing software for the secondary source method is developed and then validated with test results. It can be concluded from the test results that compared with the distributed-parameter method, the computing time of the source impedance with the weighted linear regression Technique is reduced 70%. At the same test accuracy, the signal processing of the secondary source method is simplified and the computing time is reduced 80%by the software. Therefore, with the signal processing software, the application of the secondary source method in industry is possible.
