PMSM Torque Ripple Minimization Using an Adaptive Iterative Learning Control
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Bibliographic record
Abstract
Parasitic torque pulsations existing in permanent magnet synchronous motors (PMSMs) degrade their performance, particularly at low speeds. In this paper, an adaptive iterative learning control (ILC) strategy is proposed for torque ripple minimization in a PMSM drive system. An analysis is conducted to study the impact of ILC gains on the steady-state and transient performance of the system. Accordingly, a real-time tuning method based on multi-variable sliding-mode extremum seeking (MSES) is proposed to adjust the ILC gains. The proposed controller is applied to a PMSM and its performance is verified by comparing the results with a similar controller using a non-adaptive ILC scheme. The results demonstrate the effectiveness of the proposed ILC scheme in achieving lower torque ripples and faster transient performance.
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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 | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.002 |
| 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