Study on Compensation Method of Encoder Pulse Errors for Permanent Magnet Synchronous Motor Control

被引:0
|
作者
Park, Beom-Do [1 ]
Kim, Seon-Jung [2 ]
Moon, Ju-Hyeong [2 ]
Kang, Dong-Woo [2 ]
Go, Sung-Chul [3 ]
Su, Khac-Huan [4 ]
机构
[1] Youngshin Precis Co Ltd, Anyang Si 14119, South Korea
[2] Keimyung Univ, Dept Elect & Elect Engn, Daegu 42601, South Korea
[3] Keimyung Univ, Dept Robot Engn, Daegu 42601, South Korea
[4] Eastern Int Univ, Dept Control & Automat Engn, Thu Dau Mot 820000, Binh Duong, Vietnam
关键词
error compensation; hall sensor; pulse errors; permanent magnet synchronous motor; rotary encoder;
D O I
10.3390/math12193019
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In vector-controlled Permanent Magnet Synchronous Motors (PMSMs), measuring the motor flux angle, particularly the rotor position, is essential. If a pulse error occurs during motor control using an encoder, it becomes impossible to accurately estimate the rotor position, leading to incorrect position angle information being used in the coordinate transformation. This mismatch causes discrepancies between the commanded three-phase stator current and the actual current applied to the motor. As a result, the motor and inverter output and efficiency decrease, and the control performance deteriorates. Therefore, research is necessary to compensate for such errors. This paper proposes an algorithm that detects pulse errors occurring in incremental encoders and automatically switches to the Hall sensor control mode to compensate for the encoder pulse errors. The proposed algorithm, based on Hall sensors, has the advantage of not significantly affecting control delays, which could be problematic in high-speed operating ranges; thus, effective control is maintained even in such situations.
引用
收藏
页数:16
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