Virtual Nonholonomic Constraints-Based Motion Control for Underactuated UAV Slung-Payload Systems
Why this work is in the frame
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Bibliographic record
Abstract
The UAV slung-payload transportation system, characterized by highly nonlinear and coupled dynamics, poses a significant control challenge due to the two-degree underactuation of the tethered payload. This note investigates online trajectory generation and control for this system, focusing on the asymptotic stabilization of both the actuated UAV's positions and the unactuated payload's swings. First, we introduce a virtual nonholonomic constraint(VNHC) based approach to generate smooth UAV trajectories. This approach simplifies the design by operating on a lower-dimensional system, thereby bypassing the complexities of the original high-dimensional underactuated system. Second, a continuous fixed-time tracking controller is designed to drive the system dynamics onto the VNHC and to ensure its invariance. The rigorous asymptotic stability of the closed-loop system is analyzed using Lyapunov techniques and Barbalat's lemma. Numerical and experimental studies are conducted to evaluate the performance of the proposed approach.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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