Abstract
Non-contact thickness measuring systems can be found in a wide spectrum of technologies. In this paper, Hilbert–Huang transform method is used to analyze the real time signals of a measuring system which includes two round conveyor strings carrying a thin plate, a solar wafer as a sample under test. The vibrations of moving strings and the plate, which are sensitive to moving speed and initial tension in the string, are introduced briefly; the relevant analyses should be helpful for the system design. Using EMD-based time-domain filtering and complementary method, thickness variations and error bands are estimated for different cases. The results show that HHT method as an adaptive time–frequency method, should be potential in measurement engineering applications.
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Schedule a callMore From: Journal of The Institution of Engineers (India): Series C
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