This invention relates to a method of operating an absolute encoder apparatus comprising a scale having features defining absolute position information in at least one measuring dimension, and a readhead configured to read the features. The method comprises: obtaining at least one representation of at least some of the features defining absolute position information; analysing the at least one representation to determine at least one parameter indicative of the quality of the representation; and providing an output indicative of the relative setup of the scale and readhead based at least in part on the at least one parameter.
申请公布号
WO2010049682(A1)
申请公布日期
2010.05.06
申请号
WO2009GB02558
申请日期
2009.10.27
申请人
RENISHAW PLC;GRIBBLE, ANDREW, PAUL;GORDON-INGRAM, IAIN, ROBERT