Master-slave control of an active catheter instrumented with shape memory alloy actuators
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
In the recent years, there has been considerable interest in developing active catheters instrumented with shape memory alloy (SMA) actuators to perform angioplasty. The problem, however, with SMA actuators is the extremely non-linear response of the strain with input current. Therefore, control of such an active catheter inside the body is inaccurate and which could lead to unforeseen damage. In this paper, a novel model for SMAs and a robust H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">infin</sub> loop-shaping controller has been implemented to guarantee robust performance of the active catheter. A closed-loop control algorithm has been implemented to precisely orient the catheter in space based on feedback from a 5-DOF magnetic sensor. The active catheter tracks a reference trajectory generated either by a haptic device under the control of a user or from an image processing algorithm which determines the angle of a branch in the vasculature.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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