Abstract
This paper proposes a locating scheme method for diagnosis. The method utilises measurements/sensor readings to estimate the variation in contact points between the fixture and the workpiece. Kinematic analysis is used to derive a linear sensitivity equation that relates position error in locators to sensor readings. By using a subspace estimation technique based on the sensitivity equation the sensor variation is separated into noise and locator variation. The root cause of fixture failure is identified by ranking the estimated locator variation. The approach is attractive because it can deal with multiple coupled locator failures and is not limited to a 3-2-1 locating scheme, but works for an arbitrary deterministic locating scheme.
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© 1999 Springer Science+Business Media Dordrecht
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Carlson, J.S. (1999). Root Cause Analysis for Fixtures and Locating Schemes Using Variation Data. In: van Houten, F., Kals, H. (eds) Global Consistency of Tolerances. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1705-2_11
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DOI: https://doi.org/10.1007/978-94-017-1705-2_11
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5198-1
Online ISBN: 978-94-017-1705-2
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