Research on Phase Current Reconstruction and Fault-Tolerant Control for EMA Control Unit
Bibliographic record
Abstract
During the whole-life service of the aviation electro-mechanical actuator, the current sensor may be faulty due to the manufacturing demerits or exposure to harsh operating conditions. In order to improve the fault tolerance capability of the system, a new three-phase current reconstruction method for Electro-Mechanical Actuator (EMA) control unit is proposed in this paper. Firstly, the limitations posed by the installation position of the DC-link current sensor on the traditional phase current reconstruction method are presented. In real applications, considering the DC-link current sensor is normally placed before the DC-link capacitor due to the utilization of busbar, the relationship between EMA DC-link current and phase current is analyzed in detail. Later, based on the above relationship, the phase current of EMA can be successfully reconstructed. With the reconstructed phase current, a fault-tolerant control method for EMA is also presented. Simulation and experimental results verify the effectiveness of the proposed method and the feasibility of the fault-tolerant control method. Compared to the conventional method, the proposed current reconstruction method reduces the dependency on the accuracy and rate of the DC-link current measurement. Besides, the proposed method shows a low computational burden and has practical engineering value.
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How this classification was reachedexpand
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) | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".