Numerical controller
US7659681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2007 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Aug 11, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/45244
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A servomotor in a numerical controller is controlled by automatically switching to either pressure control or position control in association with the command which is smaller from among a command obtained by performing pressure feedback control and a command obtained by performing position feedback control. When switched to pressure control while moving according to a movement command, the output of the movement command is terminated halfway, and the command in the next block is executed, and pressure control of the next command is immediately started. As a result, a wasteful time is eliminated, and a cycle time of the operation can be shortened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.