油管壁厚測(cè)量數(shù)據(jù)的一致性加權(quán)融合估計(jì)算法

在隨機(jī)擾動(dòng)環(huán)境中采用漏磁場(chǎng)法在線測(cè)量油管壁厚時(shí),每個(gè)磁性傳感器只能得到環(huán)境的
部分信息。為了對(duì)各傳感器的局部測(cè)量值進(jìn)行穩(wěn)健融合估計(jì),提出了油管壁厚測(cè)量數(shù)據(jù)的一致性加權(quán)融合估計(jì)算法。利用改進(jìn)的數(shù)據(jù)探測(cè)技術(shù)中的分布圖方法對(duì)各個(gè)傳感器的一致性進(jìn)行檢驗(yàn),并采用簡(jiǎn)單加權(quán)平均法求得一致性傳感器測(cè)量數(shù)據(jù)的穩(wěn)健融合估計(jì)值。融合實(shí)例表明,該算法能有效地提高系統(tǒng)測(cè)量的穩(wěn)健性,且具有精度高、運(yùn)算簡(jiǎn)單等特點(diǎn)。該算法適用于多傳感器測(cè)量數(shù)據(jù)的實(shí)時(shí)高精度融合估計(jì)。
關(guān)鍵詞:多傳感器;數(shù)據(jù)融合;信號(hào)處理;油管;無損檢測(cè)
　　Abstract :In an on - line wall thickness measurement system of oil well tubing using magnetic flux leakage technique , each magnetic sensor can only offer partial information with stochastic noise about it’s environment . The consensus weighted fusion algorithm for the robust fusion of multisensor data is developed. The improved distribution display method
in exploratory data analysis is used to test various sensor’s consensus. Meanwhile ,the simple weighted mean method is in2 troduced to fuse consensus sensor data ,and the robust fused data of multisensor data is obtained as a result . The fusion re2 sults show that the robustness of the measurement system is evidently enhanced ,and the algorithm has specific advantages over some conventional algorithms such as high - accuracy ,and high - efficiency. It is predicted that the algorithm is avail2 able for real - time ,accurate fusion of multisensor data.
Key Words :Multisensor ;Data Fusion ;Signal Processing ;Oil Well Tubing ;Nondestructive Testing