Tracking and Structural Vibration Control of Flexible Ball–Screw Drives With Dynamic Variations
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Bibliographic record
Abstract
This paper proposes a parallel structure of a feedback controller for the ball-screw drive systems which have significant dynamic variations during operations. The controller consists of two controllers with two different objectives. One controller aims at moving the workpiece table so that its position tracks reference trajectories with high speed and high accuracy. The other controller is for suppressing the structural vibration caused by the cutting force disturbance around system's resonant frequencies. To take into account the resonant modes' variations which are peculiar to ball-screw drives, a gain-scheduled controller is utilized as the vibration suppression controller. Advantages of the proposed controller structure in the ball-screw drive control application are discussed. It is experimentally demonstrated that the controller with the parallel structure is effective in achieving high performance in both trajectory tracking and cutting force disturbance rejection.
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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 | 0.000 |
| 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