2025-06-17 名古屋大学,科学技術振興機構
＜関連情報＞
- https://www.jst.go.jp/pr/announce/20250617-3/index.html
- https://www.jst.go.jp/pr/announce/20250617-3/pdf/20250617-3.pdf
- https://link.springer.com/article/10.1007/s00348-025-04039-4
スパース処理粒子画像流速計とプラズマアクチュエータを用いた流速場のリアルタイムフィードバック制御 Real-time feedback control of flow velocity field using sparse processing particle image velocimetry and plasma actuators
Taku Nonomura,Chihaya Abe,Ryo Naramura & Yasuo Sasaki
Experiments in Fluids Published:16 June 2025
DOI:https://doi.org/10.1007/s00348-025-04039-4
Abstract
Visual feedback control of a flow field by a controller that operates plasma actuators with sparse processing particle image velocimetry as an observer was implemented in a wind tunnel test. The control objective was the suppression of a Kàrmàn vortex around a circular cylinder. Sum-of-absolute-values control based on an L1 optimization problem was implemented to enable real-time processing. Real-time visual feedback control at 2000 Hz was achieved with the proposed system owing to the use of sparse processing particle image velocimetry, which evaluates only a limited number of interrogation windows, and a sophisticated solver for the L1 optimization problem. The techniques adopted in the present study can accelerate the feedback control rate by a factor of 10 to 100. It was confirmed that the proposed system suppresses the Kàrmàn vortex to a certain extent. The results show that the control law using forecasts further ahead performs better.
