Abstract | ||
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Three-phase current is very important in the vector control scheme of permanent magnet synchronous motor, and its sampling precision affects the servo control performance directly. In the low-cost servo system, to simplify the structure and reduce the volume, three-phase current is often not accurately detected because the current sensors are usually replaced by the sampling resistors, which will cause the undesirable torque ripple. Therefore, to enhance the closed-loop control performance for the low-cost servo system, an adaptive control method is proposed to compensate the current measurement error. In this approach, first, the estimated currents can be obtained online by a current state observer. Then, a three-phase current error compensator is designed based on the mathematical relation between three-phase current error and torque current. Next, based on the model reference adaptive control algorithm, two proportional-integral controllers are used to further strengthen the compensation effect. Finally, experimental results confirm that this method is effective and precise, and three-phase current error does not affect the servo control performance. |
Year | DOI | Venue |
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2014 | 10.1177/0959651814539474 | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART I-JOURNAL OF SYSTEMS AND CONTROL ENGINEERING |
Keywords | Field | DocType |
Permanent magnet synchronous motor,low-cost sampling resistors,current measurement error,model reference adaptive control | State observer,Vector control,Torque,Control theory,Direct torque control,Control engineering,Servomechanism,Servo control,Adaptive control,Engineering,Torque ripple | Journal |
Volume | Issue | ISSN |
228 | 9 | 0959-6518 |
Citations | PageRank | References |
0 | 0.34 | 2 |
Authors | ||
5 |
Name | Order | Citations | PageRank |
---|---|---|---|
Bao Song | 1 | 5 | 3.29 |
Tianhang Cheng | 2 | 0 | 0.34 |
Xiaoqi Tang | 3 | 30 | 10.63 |
Shiqi Zheng | 4 | 41 | 6.32 |
Shaowu Lu | 5 | 6 | 1.54 |