Numerical control device with rational B-spline interpolator
US5227978A · kind A · utility
14Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Oct 31, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/34141
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A numerical control device for controlling a machine tool or a robot accepts a mixed program including both conventional G-codes and codes for nonuniform rational B-spline. The blocks of G-codes and rational B-spline codes are discriminated by a respective head code or symbol. Once a set of order, number of control points, and knot vector is input via code blocks of a program, the same setting for the B-spline basis functions is used for generation of the rational B-spline curves until a new set of order, etc., are input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.