Speed closed-loop drive system of permanent magnet synchronous motor using low-count QEP
Conference proceedings article
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
ไม่พบข้อมูลที่เกี่ยวข้อง
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Munggonrit S.S., Konghirun M., Tungpimolrut K.
ผู้เผยแพร่: Hindawi
ปีที่เผยแพร่ (ค.ศ.): 2010
หน้าแรก: 269
หน้าสุดท้าย: 273
จำนวนหน้า: 5
ISBN: 9789746724913
eISSN: 1745-4557
ภาษา: English-Great Britain (EN-GB)
บทคัดย่อ
A speed closed-loop drive system of permanent magnet synchronous motor (PMSM) typically requires the rotor position feedback from the high-count quadrature encoder pulse (QEP) sensor equipped with the motor. Unlike the brushless dc motor, the high resolution of rotor position is necessary in PMSM drive because the instantaneous rotor position is required for its field orientation on the synchronously rotating dq-axis coordinate. In addition, the bandwidth of the calculated speed depends on the resolution of measured rotor position as well. Unfortunately, the resolution of the QEP (e.g., 1000-2000 pulse/rev) heavily affects the overall cost. In low cost applications, the PMSM drive using the high-count QEP is therefore impossible. This paper proposes the rotor position extrapolation using the polynomial estimator from the low-count QEP and implement in the complete speed closed-loop drive system of PMSM. Simulation results using MATLAB/SIMULINK are presented to initially validate the proposed algorithm in the speed closed-loop drive system. According to these results, the improved speed control in a high speed range can be observed when using low-count QEP of 3 and 6 pulse/rev. However, in the low speed range the speed control still requires the higher count QEP. Finally, the experimental results are included and discussed to fully validate the overall system.
คำสำคัญ
Low-count QEP, Permanent magnet synchronous motor, Polynomial estimator, Speed closed-loop drive, Vector control
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