Means for digital control
US4147966A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1976 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Nov 5, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A closed loop control system achieves high speed operation commensurate with low resolution A/D converters which, at the same time, is capable of accepting and using higher resolution control signals. A control loop includes a differencing device for providing an error signal produced as a difference between a reference value and an output value related to the controlled parameter, D/A converter and integrator, producing an output value for device control. The feedback loop includes an A/D converter. The reference value and reference value input to the differencing device as well as the D/A converter accept digital signals of resolution greater than those produced by the A/D converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.