Combined Feedback and LIDAR-Based Feedforward Active Load Alleviation
Summary (1 min read)
Feedforward load alleviation commands
- Reconstructed wind profile ahead of the aircraft.
- The synthesis of each controller only needs to focus on a smaller problem (simple constraints, simple goal, and few tuning parameters).
- Advanced tools (e.g. from the linear and robust control theories) can be used for each of these feedforward control design problems.
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Citations
24 citations
Cites background from "Combined Feedback and LIDAR-Based F..."
...14/23 alleviation function presented in [2] and [3] focuses on the exploitation of the anticipation capability provided by the LIDAR and the certifiability aspect rather than on “inverting” the flexible modes of the airplane to get the maximum alleviation performance at the price of a lack of robustness and the need for adaptive control....
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...The wind reconstruction results based on the LIDAR sensors are very promising and the combined results of [2] and [3] show that they are sufficient to enable the design of such an effective anticipation-capable feedforward load alleviation function....
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...Results obtained in closed-loop with both the feedforward and feedback load alleviation functions will be published in the near future along with the design of the control functions (see [2] and [3])....
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...The way the load alleviation itself is performed (based on this reconstructed wind) is not presented here but can be found in [2] and [3]....
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...Unfortunately, the authors presently do not have such realistic gust/turbulence wind fields at their disposal yet in order to investigate the behavior of the algorithm (including also the associated load alleviation function of [2] and [3]) on these cases....
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23 citations
10 citations
Cites background from "Combined Feedback and LIDAR-Based F..."
...feedback control if feedforward is also used, is to guarantee a robust response if the actual system dynamics are different than the system dynamics for which the controllers are designed [46, 114, 141]....
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9 citations
9 citations
References
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