Analog/digital numerical control system
US4193022A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1978 |
| Grant date | Mar 11, 1980 |
| Priority date | — |
| Expiry date | Mar 22, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/293
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An analog/digital numerical control system that utilizes analog techniques to process large scale (macro) differences and digital techniques to process small scale (micro) differences. In this manner, advantage is taken of the respective virtues of both analog and digital processing techniques while avoiding the disadvantages associated with the exclusive use of either approach. In addition, a novel tach responsive braking generator is disclosed for particular use in controlling the positioning of high mass heads that is adapted to provide dynamic braking of the controlled machine assembly to accomplish proper positioning without "hunting".
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.