Abstract
Faults and wear in hydraulic pitch actuators of wind turbines significantly contribute to downtime of remote of-shore wind farms. This study presents a method for estimating incipient friction in the hydraulic actuator, which is directly associated with faults and wear in the pitch system. An additional sensor and a sliding mode differentiator are employed to estimate the total friction, which is then used in a modified least-squares scheme to obtain the Coulomb friction coefficient. Statistical change detection is used to robustify the friction monitoring scheme against model uncertainty and sensor noise. Simulation tests demonstrate the efficacy of the proposed method.
Original language | English |
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Book series | IFAC-PapersOnLine |
Volume | 58 |
Issue number | 4 |
Pages (from-to) | 598-603 |
ISSN | 2405-8963 |
DOIs | |
Publication status | Published - 2024 |
Event | 12th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes - Teatro Comunale, Ferrara, Italy Duration: 4 Jun 2024 → 7 Jul 2024 |
Conference
Conference | 12th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes |
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Location | Teatro Comunale |
Country/Territory | Italy |
City | Ferrara |
Period | 04/06/2024 → 07/07/2024 |
Keywords
- Parameter estimation based methods for FDI
- Filtering
- Estimation for FDI
- Nonlinear observers
- Filter design