Global patent index - EP 1035952 A1

EP 1035952 A1 2000-09-20 - 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

EP 1035952 A1 (EN)

Application

EP 98960446 A

Priority

  • US 9825115 W
  • US 6720697 P

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 (main, further and additional classification)

B25J 9/16

IPC 8 full level (invention and additional information)

B25J 9/16 (2006.01)

CPC (invention and additional information)

B25J 9/1641 (2013.01); B25J 9/1623 (2013.01)

Citation (search report)

See references of WO 9928096A1

Designated contracting state (EPC)

CH DE FR GB IT LI SE

EPO simple patent family

WO 9928096 A1 19990610; WO 9928096 A9 19991014; CA 2312739 A1 19990610; EP 1035952 A1 20000920; TW 416904 B 20010101

INPADOC legal status

2002-01-23 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20010703

2000-09-20 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000703

2000-09-20 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): CH DE FR GB IT LI SE