Patent · US Active

Axis-of-rotation position control device

US7750592B2 · kind B2 · utility

7Cited by
6References
4Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJan 3, 2008
Grant dateJul 6, 2010
Priority date—
Expiry dateJan 30, 2029

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG05B13/042
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

When performing numerical control of a rotary table, the moment of inertia and the center of gravity of a control target change because of a placed object fixed onto the rotary table. A rotary table to which a placed object has been fixed serves as a target plant, the actual motion of this is compared with motion calculated by an identification model of the target plant, and a torque command value is corrected. The identification model comprises a term pertaining to angular acceleration and a term pertaining to angle of rotation, and by including the term pertaining to angle of rotation, correction of a torque command corresponding to a change in the center of gravity can be performed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.