METHOD FOR INITIALIZING A POSITION-MEASURING SYSTEM
申请公布号:US2007227019(A1)
申请号:US20070693655
申请日期:2007.03.29
申请公布日期:2007.10.04
发明人:HOLZAPFEL WOLFGANG;RASCHER KAI
分类号:G01C19/00
主分类号:G01C19/00
摘要:A method is for initializing a position-measuring system for an object movable in at least two degrees of freedom relative to a measuring frame. The position-measuring system includes one position-measuring device per degree of freedom, including a scale having an incremental track for measuring relative positions and an absolute track for measuring absolute positions, as well as scanning heads, assigned to the scales, for reading the incremental tracks and absolute tracks. In an initialization step, the incremental tracks are evaluated using a first evaluation procedure having a large tolerance with respect to the alignment of scanning head and associated scale, and in so doing, approximate absolute positions are determined per degree of freedom. In an alignment step, the movable object is aligned relative to the measuring frame based on the approximate position. In an acquisition step, the absolute tracks are evaluated using a second evaluation procedure having a low tolerance with respect to the alignment of scanning head and associated scale, and precise absolute positions are determined for each degree of freedom.
ANORDNING FOR ATT VID OPPNINGEN HOS EN BEHALLARE FASTHALLA OCH TILLSLUTA EN I BEHALLAREN INFORD PASE
DATABEHANDLINGSANORDNING FOR SKRIVARE
SKAL BESTAENDE AV SPLITTERKROPPAR MED PLANA GLIDYTOR FOR EN SPRENGLADDNING
KERMETMATERIAL BESTAENDE AV KROMIT OCH METALLISKT KROM
KONSTRUKTIVT BALANSERAD KEDJELENK
PERFEZIONAMENTO NEGLI ACCOPPIAMENTI A FLUIDO PER TRASMISSIONI DI FORZA
PERFEZIONAMENTO NELLE VALVOLE REGOLATRICI DEL FLUSSO DI FLUIDI
VERMEVEXLARE MED PA ETT BERARROR ANORDNADE TRADSLINGOR
FORFARANDE OCH ANORDNING FOR SEISMISK UNDERSOKNING
PERFECTIONNEMENTS AUX PRODUITS REVETUS
APPAREIL DE CHAUFFAGE A COMBUSTIBLE SOLIDE
CABLE CONDUCTEUR A GAINE ISOLANTE ET SON PROCEDE DE FABRICATION