Title: Determination of misalignment and angular scale errors of a laser tracker using a new geometric model and a multi-target network approach
Authors: Lewis, Andrew, National Physical Laboratory, Teddington, UK
Hughes, Ben, National Physical Laboratory, Teddington, UK
Forbes, Alistair, National Physical Laboratory, Teddington, UK
Sun, Wenjuan, National Physical Laboratory, Teddington, UK
Veal, Dan, National Physical Laboratory, Teddington, UK

Show all authors (6)
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Pages:16
Language:en
DOI:10.7795/810.20130620S
Resource Type: Text / Report
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Dates: Available: 2013
Issued: 2013-08
Classifications: OCIS 120.0120 ; OCIS 120.3180 ; OCIS 120.3930 ; OCIS 150.6910 ; PACS 07.60.Ly ; PACS 42.62.-b ; PACS 06.20.-f ; PACS 42.62.Eh ; PACS 07.05.Hd ; PACS 07.05.Tp
File: Download File (application/pdf) 274.91 kB (281503 Bytes)
MD5 Checksum: d0bdb087ec3a7d0af72193c3ad3fe620
SHA256 Checksum: e9f5b1124480a27095164ec98dc203e4b65f75413c154c66b5a46ae88c000685
Keywords coordinate metrology ; laser tracker ; modelling ; error mapping ; multilateration
Abstract: We report on the determination of laser tracker geometrical alignment and angular scale errors using a new geometric error model
and repeated measurements of a network of fixed targets which are measured using a laser tracker, mounted in five
different locations/orientations. After fitting to the data, we are able to determine geometrical/angular scale errors of
the tracker with sufficient accuracy that a previously un-calibrated tracker can easily pass a standard performance verification
test, after being error-mapped using our technique. Our technique uses no special equipment, takes under one hour and provides rigorous
uncertainty values for the error parameters.
Other: article based on oral presentation at the conference MacroScale 2011 "Recent developments in traceable dimensional measurements",
Bern-Wabern (Switzerland), 04-06, October, 2011
Citation: LEWIS, Andrew, Ben HUGHES, Alistair FORBES, Wenjuan SUN, Dan VEAL, and Karim NASR. Determination of misalignment and angular scale errors of a laser tracker using a new geometric model and a multi-target network approach. Physikalisch-Technische Bundesanstalt (PTB), 2013. doi: 10.7795/810.20130620S
Remark: article based on oral presentation at the conference MacroScale 2011 "Recent developments in traceable dimensional measurements", Bern-Wabern (Switzerland), 04-06, October, 2011