Modeling and Analytical Study of Scratch Drive Actuators
Bibliographic record
Abstract
This paper presents a new analytical model of Scratch Driver Actuator (SDA) to obtain the design parameters of this device. In order to simulate working states of the SDA, three different static modes are considered: non-contact mode, transition mode, and full-contact mode. The SDA is simplified as an L-shape beam with different boundary conditions in each mode. Using beam theories in bending, the governing equation is derived and solved in each mode. The non-contact mode allows identifying the deflection and the driving voltage after which the actuator plate starts touching the substrate. From the transition mode, we calculate the primary contact length to be used for the analysis of the full-contact mode. In the full-contact mode, the SDA is completely snapped down in its working cycle. From this mode, we obtain the relationships between input voltage and design parameters such as SDA geometry, contact length, and step size. It is shown that a good agreement between theoretical results and experimental values is achieved, which verifies the validity of the new model.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| 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 | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".