Frequency Domain System Identification of a Small Flying-Wing UAS
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
View Video Presentation: https://doi.org/10.2514/6.2022-2407.vid This paper focuses on system identification of a small, flying-wing UAS using the frequency response method. A flight test procedure is designed to address the unique challenges encountered when conducting system identification for a small flying-wing UAS with elevon controls. These challenges include increased susceptibility to atmospheric disturbances, limited yaw maneuverability, and visual line-of-sight safety requirements. Frequency sweeps are used as control inputs to excite the longitudinal and lateral-directional dynamics over a designed frequency range. Reduced-order transfer functions are first identified to gain initial information on key dynamics and to provide comparison with different models. Then, decoupled longitudinal and lateral-directional state space models are identified from flight data. The models are validated in the time-domain through comparison with doublet maneuver flight data, showing an excellent fit between the dynamic models and flight data. Finally, nondimensional stability and control derivatives and their confidence intervals are computed from the state space models for comparison with other modeling methods.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it