液壓千斤頂示值誤差及內(nèi)插誤差測(cè)量結(jié)果的不確定度評(píng)定
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【摘要】根據(jù)JJG 621—2012《液壓千斤頂》檢定規(guī)程中示值誤差、內(nèi)插誤差的要求,建立相關(guān)數(shù)學(xué)模型,分析、評(píng)定影響示值誤差、內(nèi)插誤差測(cè)量結(jié)果的各個(gè)因素,利用簡(jiǎn)潔、高效的方法,全面分析液壓千斤頂不確定度評(píng)定的過(guò)程,最后得到液壓千斤頂示值誤差、內(nèi)插誤差的合成標(biāo)準(zhǔn)不確定度和擴(kuò)展不確定度。
【關(guān)鍵詞】液壓千斤頂;不確定度;內(nèi)插誤差;示值誤差
【DOI編碼】10.3969/j.issn.1674-4977.2024.03.078
Evaluation of Uncertainty in Measurement Results of Indication Error and Interpolation Error of Hydraulic Jacks
SHAN Haidi, FU Chong
(Henan Institute of Metrology, Zhengzhou 450008, China)
Abstract: According to the requirements of indication error and interpolation error in the verification regulation of JJG 621—2012 Hydraulic Jacks, the relevant mathematical model is established, by analyzing and evaluating the factors that affect the measurement results of indication error and interpolation error, the process of uncertainty evaluation of hydraulic jack is comprehensively analyzed by using a concise and efficient method, finally, the combined standard uncertainty and extended uncertainty of indication error and interpolation error of hydraulic jacks are obtained.
Keywords: hydraulic jacks;uncertainty; interpolation error; indication error
近年來(lái),隨著我國(guó)公路、鐵路建設(shè)和建筑工程施工技術(shù)的高速發(fā)展,在基樁工程和結(jié)構(gòu)工程中開(kāi)始廣泛應(yīng)用鋼筋預(yù)應(yīng)力結(jié)構(gòu)張拉工藝。(剩余1679字)