Process control method and control system
US5025499A · kind A · utility
40Cited by
5References
7Claims
0Family size
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Key dates
| Filing date | Apr 12, 1989 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Apr 12, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S706/906
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A process control system for controlling actions of a process is provided as a qualitative model to which the fuzzy theory is applied to infer and control the process. The process control system includes differentiation apparatus for determining the amounts of displacement of different process amounts with respect to time, qualitative fuzzy inference apparatus for making inference of qualitative process actions, and centroid arithmetic apparatus for converting the qualitative values of inferred control target process amounts into the appropriate amount of control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.