Abstract
This paper presents a case study on the practical implementation of a fuzzy-PLC system for a thermal process. The theoretical study indicates that the inferior performance of fuzzy-controlled processes around a reference point is often caused by insufficient resolution of the fuzzy inference. The limitations of ladder logic cannot support complex algorithms for resolution improvement. A simple gain adaptation method is presented here, to achieve smooth fuzzy control, that can be easily implemented in a PLC system. Real-time experiments on an unidentified thermal process show the effectiveness of the approach, as well as the robustness of the fuzzy controller with respect to the time-varying features of the process. © 1999 Elsevier Science Ltd. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 523-529 |
| Journal | Control Engineering Practice |
| Volume | 7 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 1999 |
Research Keywords
- Fuzzy control
- Fuzzy sets
- Fuzzy-plc systems
- Gain scheduling
- Process control