EP 1035952 A1 20000920 - SYSTEM AND METHOD FOR IMPROVING THE DYNAMIC ACCURACY OF A HEXAPOD POSITIONING DEVICE
Title (en)
SYSTEM AND METHOD FOR IMPROVING THE DYNAMIC ACCURACY OF A HEXAPOD POSITIONING DEVICE
Title (de)
VORRICHTUNG UND VERFAHREN ZUR VERBESSERUNG DER DYNAMISCHE GENAUIGKEIT EINES HEXAPOD-POSITIONIERUNGSGERÄTES
Title (fr)
SYSTEME ET PROCEDE PERMETTANT D'AMELIORER L'EXACTITUDE DYNAMIQUE D'UN DISPOSITIF DE POSITIONNEMENT HEXAPODE
Publication
Application
Priority
- US 9825115 W 19981201
- US 6720697 P 19971201
Abstract (en)
[origin: WO9928096A1] A system and method for improving the dynamic accuracy of a positioning device, such as a hexapod machining center, is disclosed. The positioning device has an upper and lower platform connected by a plurality of actuators at a plurality of pivot locations. The dynamic accuracy of the positioning device is improved by reducing undesired following errors in the actuator servo system. The improved method comprises the steps of: calculating, in real time, desired actuator forces required to produce an acceleration for the positioning device which minimizes the undesired following errors in the actuator servo system; and continuously commanding the actuators to produce the calculated actuator forces.
IPC 1-7
IPC 8 full level
B25J 9/16 (2006.01)
CPC (source: EP)
B25J 9/1623 (2013.01); B25J 9/1641 (2013.01)
Citation (search report)
See references of WO 9928096A1
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
WO 9928096 A1 19990610; WO 9928096 A9 19991014; CA 2312739 A1 19990610; EP 1035952 A1 20000920; TW 416904 B 20010101
DOCDB simple family (application)
US 9825115 W 19981201; CA 2312739 A 19981201; EP 98960446 A 19981201; TW 87120026 A 19990121