Abstract
Disturbance Feedback Control (DFC) is a technique, originally proposed by Fuji Electric, for augmenting existing control systems with an extra feedback for attenuation of disturbances and model errors. In this work, we analyze the robustness and performance of a PID-based control system with DFC. A multiplicative uncertainty model is used to represent mismatch between a nominal model and the actual plant, and expressions for robust stability, nominal and robust performance are derived. We propose a simple grid-based search algorithm that can be used to find DFC gains to achieve robust stability and performance (if such gains exist). Finally, two different simulation case studies are evaluated and compared. Our numerical studies indicate that better performance can be achieved with the proposed method compared with a conservatively tuned PID controller and comparable performance can be achieved when compared with an H-infinity controller.
Original language | English |
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Title of host publication | Proceedings of the 2015 IEEE Conference on Control Applications |
Number of pages | 6 |
Publisher | IEEE Computer Society Press |
Publication date | 21 Sept 2015 |
Pages | 1223 - 1229 |
Article number | TuC05.1 |
ISBN (Electronic) | 978-1-4799-7787-1 |
DOIs | |
Publication status | Published - 21 Sept 2015 |
Event | 2015 IEEE Conference on Control Applications (CCA) - Sydney, Australia Duration: 21 Sept 2015 → 23 Sept 2015 |
Conference
Conference | 2015 IEEE Conference on Control Applications (CCA) |
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Country/Territory | Australia |
City | Sydney |
Period | 21/09/2015 → 23/09/2015 |
Series | IEEE International Conference on Control Applications |
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Volume | 2015 |
Keywords
- PID control
- Linear robust control
- Control applications