Method for determining uncertainty of flatness measurement result of flat plate under on-site environment

A technology of field environment and measurement results, applied in the field of inspection

Active Publication Date: 2018-06-22
XIAN AERO ENGINE CONTROLS
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Problems solved by technology

[0003] In order to solve the above-mentioned technical problems in the background technology, the present invention provides a method for determining the uncertainty of flatness measurement results of flat plates in the field environment, which can solve the problem of determining the uncertainty in the field environment and can improve the reliability of the test results.

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  • Method for determining uncertainty of flatness measurement result of flat plate under on-site environment
  • Method for determining uncertainty of flatness measurement result of flat plate under on-site environment
  • Method for determining uncertainty of flatness measurement result of flat plate under on-site environment

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Embodiment Construction

[0081] The invention provides a method for determining the uncertainty of the flatness measurement result of a flat panel in an on-site environment. The method comprises the following steps:

[0082] 1) Determine the level of the plate placed in the X and Y directions, determine the jump of the detection equipment value due to the vibration of the surrounding environment, and determine whether the composite uncertainty includes the uncertainty component caused by the level of the plate and the surrounding vibration according to the measurement results .

[0083] 2) Determine the uncertainty component calculation formula caused by the system effect to calculate the B-type uncertainty component of the flatness measurement result of the plate to be tested in the field environment where μ z Uncertainty component introduced for environmental vibration, μ Sp Uncertainty component introduced for the horizontal case, μ Sb Uncertainty component introduced by the measuring device, μ...

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Abstract

The invention relates to a method for determining uncertainty of the flatness measurement result of a flat plate under an on-site environment. The method comprises the following steps: determining anuncertainty source; determining the size of a flat plate to be measured; determining uncertainty of a detection device; determining level situation obtained when the flat plate is measured and calculating uncertainty caused by same; determining uncertainty caused by the measurement method; determining uncertainty caused by environmental shake; determining measurement repeatability uncertainty; andcarrying out uncertainty synthesis by utilizing the fundamental principle of uncertainty, and obtaining the uncertainty result of flatness detection in the current environment. The advantages are that the method solves the problem of flatness measurement result accuracy evaluation of the flat plate in a work site, which is hard to provide a good detection environment due to large size and irremovability and the like. The method can obviously improve working efficiency of on-site flat plate detection, and can detect some flat plates, which cannot be detected originally, and can give quantitative result reliability data.

Description

technical field [0001] The invention belongs to the technical field of detection, and relates to a method for determining the uncertainty of measurement results, in particular to a method for determining the uncertainty of flatness measurement results of a flat panel in an on-site environment, which can be used in field conditions where vibration, inclination, and other disturbances exist Uncertainty determination of plate flatness measurement results. Background technique [0002] At present, my country's verification regulations for flat plates require that the measurement uncertainty of the flatness test results of the flat plate be evaluated, and the value of the uncertainty be reported to the inspection party as part of the measurement results. The verification procedure provides a method for determining the uncertainty, which is mainly used in the test of flat panels in the laboratory environment. It is difficult to obtain reliable uncertainty data for certainty asses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/30
CPCG01B21/30
Inventor 项阳周宇涛李琳
Owner XIAN AERO ENGINE CONTROLS
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