Data processing: measuring – calibrating – or testing – Calibration or correction system – Position measurement
Reexamination Certificate
2007-10-23
2007-10-23
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Calibration or correction system
Position measurement
Reexamination Certificate
active
11501872
ABSTRACT:
Error correction of measurements of workpieces taken using a coordinate positioning apparatus in which the workpiece is mounted on a bed of the apparatus and a workpiece sensing probe is moved relative to the bed into a position sensing relationship with each workpiece and a position reading taken, and in which means are provided for measuring at least a function of the acceleration of the probe relative to the bed, the method including, in any suitable order: measuring the workpiece; determining the repeatable measurement errors from a predetermined error function, look-up table or map; measuring at least a function of the acceleration and calculating the unrepeatable measurement errors as the workpiece is measured; and combining the repeatable and non repeatable errors in steps (b) and (c) to determine the total errors; and using the total errors determined in step (d) to correct the measurements of the workpiece.
REFERENCES:
patent: 4333238 (1982-06-01), McMurtry
patent: 4888877 (1989-12-01), Enderle et al.
patent: 4987356 (1991-01-01), Yamada et al.
patent: 4991304 (1991-02-01), McMurtry
patent: 5140239 (1992-08-01), Matsuura
patent: 5189806 (1993-03-01), McMurtry et al.
patent: 5579246 (1996-11-01), Ebersbach et al.
patent: 5610846 (1997-03-01), Trapet et al.
patent: 6154713 (2000-11-01), Peter et al.
patent: 6412329 (2002-07-01), Nai
patent: 6868356 (2005-03-01), Nai et al.
patent: 2006/0266100 (2006-11-01), McMurtry et al.
patent: 0 364 057 (1990-04-01), None
patent: 0 436 735 (1991-07-01), None
patent: WO90/07097 (1990-06-01), None
patent: WO 02/04883 (2002-01-01), None
patent: WO 03/074968 (2003-09-01), None
Jonas Kevyn B.
McFarland Geoffrey
Nai Kenneth C. H.
Robertson James F.
Weston Nicholas J.
Nghiem Michael
Renishaw plc
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