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Dołączył: 30 Sie 2010
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Wysłany: Czw 1:05, 09 Gru 2010 Temat postu: stivali ugg Micro scale measurement system _2447 |
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Microscopic scale measuring system
Sequential sequence 5 6 7 8 sequence sequence sequence 10 9 average error of O. groove o0 an O. O. O5 a O8 an O. O. 21 a O. 22 a O. 19 a 2O-O. O. 21 a O. 24 a O. 15 a 16O. o099.8599.7099.6899.5699.4899.5599.5899.5699.5399.6299.61-0.23199.77199.65199.64199.52199.52199.53199.51199.52199.46199.59199.57- 0.273o0.153o0.073o0.02299.94299.97299.89299.93299.87299.88299.91299.960.124o0.334o0.254o0.17400.084o0.09400.124o0.084o0.05400. O74o0.154o0.140.305o0.125o0.04500.05499.87499.88499.98499.91499.87499.88499.95499.960.11599.88599.82599.74599.65599.62599.66599.62599.61599.53599. 66599.68-0.17699.76699.69699.65699.55699.52699.65699.53699.57699.57699.62699.61-0.238o0.038o0.06799.95799.86799.83799.92799.79799.87799. 84799.85799.9O0.06900.209o0.18900.109o0.01900.029o0. o6899.959o0.16900. O3900.01900.070.23999.99999.95999.82999.73999.78999.80999.71999.78999.83999.76999.81-0.03 between any two engraved lines the maximum error of 0.57 (3) noise and light CCD, the effect of noise: random noise I show students, through multiple averaging to reduce the calculation of its impact. (4) The temperature change caused the error: the measuring chamber should be constant measures,[link widoczny dla zalogowanych], measurement time as short as possible. (5) measuring the vibration of the impact of the environment: isolation vibration measurement system should be measures to reduce the instability of the measurement system. VI Conclusion In this paper, using TWAIN interface, the microscopic scale CCD image sensor measuring system is simple in structure, easy installation and measurement, automatic target accuracy, comprehensive measurement accuracy advantages. Through error analysis and practical testing, the system's targeting algorithm and verify the measurement accuracy has been effectively achieved good results, for the automatic detection of micro scale to provide a new method is more economical and practical. References [1] Zhu Xiaoping. CCD sensor based on automatic targeting reticle scale measurement processing system. Beijing University of Chemical Technology Thesis 2002 l2jTwainWorkingGroupCommittee. TWAINSPECIFICATIONVERSION1.92000 edition [3] He Bindeng ed. VisualC + + digital image processing. People Post Press, 2001, Zhu [4] XU Shi-liang editor. c commonly used numerical methods. Tsinghua University Press, 1996 [5] WilliamBuchanan forward. Communication and access El Pc Windows programming. Machinery Industry Press, 2001,[link widoczny dla zalogowanych], and the eddy current measurement of coated spherical joints Uncertainty Analysis Zhou Jinkun Jinjie Hui lantern English (Changhe Aircraft Industry Group Company X-measurement at Jingdezhen 333002) Abstract This paper describes the use of eddy current coating thickness measurement of spherical joints method, and analyzes the impact of measurement accuracy the main factors, the development process specifications Key words eddy current measurement uncertainty of a measurement made by coating the ball joints are moving parts of a certain aircraft,[link widoczny dla zalogowanych], the Ministry referred to the important joint coating) as shown in Figure 1 shows, the double dotted line between the wall and the ball was painted pieces, in order to ensure the flight of the joint friction and wear-resistant layer,[link widoczny dla zalogowanych], the electrical film thickness and uniformity of the coating, there are strict requirements,[link widoczny dla zalogowanych], in the past 12 salt pad!
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