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題名 | Research on Real-Time Error Correction for Non-Stationary Dynamic Measurement Based on Standard Value Interpolation=非穩定動態測量標準量插入法實時誤差修正研究 |
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作者 | 費業泰; 盧榮勝; | 書刊名 | 中國機械工程學刊 |
卷期 | 20:1 1999.02[民88.02] |
頁次 | 頁11-19 |
分類號 | 446.8405 |
關鍵詞 | 誤差修正; 儀器精度; 分段標準量插入法; Dynamic measurement; Dynamic measurement error; Standard value interpolation; Real-time error correction; |
語文 | 英文(English) |
中文摘要 | 誤差修正技術是提高測量儀器精度的主要方法之一,它不但可以提高儀器精度, 而且可以大幅度降低儀器的製造成本。目前,靜態系統的誤差修正技術已相當成熟,而動態 測量系統的誤差修正技術尚處於初級階段。本文通過分析動態測量系統的誤差組成和變化規 律,提出了適於非穩定動態測量系統動態測量誤差實時修正的新方法 -- 分段標準量插入法 。通過在整個測量範圍內插入一系列分段標準量,可以獲得動態測量系統的動態測量誤差離 散值,再根據這些離散的動態採樣誤差,實時地建立動能測量誤差的確定性分量與具有時變 方差的隨機分量的數學模型,並按照預報誤差最小的原則,實時地修正模型的參數,對動態 測量誤差進行預報和修正。 |
英文摘要 | The technique of error correction is one of the major methods to improve measuring instrument precision. It can not only improve the precision of an instrument, but also reduce its manufacturing cost. At present, the technique of error correction for static measuring systems is quite perfect, but the technique for dynamic measuring systems just begins. This paper analyzes the compositions of dynamic measurement errors and their change rules, develops a novel method of real-time error correction for non-stationary dynamic measuring system based on discrete standard value interpolation. By interpolating some discrete standard values through whole measuring range, the discrete sampling values of dynamic measurement errors are obtained. Then the computer in the measuring system real-timely builds up the models of the systematic error and random error with time-variant variance. This technique can real-timely adjusts the parameters of the models according to the criterion of Minimizing prediction errors to predict and correct the dynamic measurement errors. |
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