Author(s)

Hu Bing ¹

Affiliation(s)

¹ Shanghai Yinguan Semiconductor Technology Co.,Ltd, Shanghai, China

Corresponding Author

Hu Bing

ABSTRACT

As precision manufacturing, aerospace, semiconductor processing and other fields impose strict requirements on linear motion control technology, the moving-magnet linear motor (MMLM) has become a key actuator due to its cable-free movers, no mechanical contact, high thrust density and excellent dynamic characteristics. In view of the limitations of traditional drive methods in multi-degree-of-freedom strong coupling, nonlinear electromagnetic interference and end effects, this paper conducts an in-depth study and proposes a key drive technology based on single-winding independent control. Through the fine analytical modeling of the internal electromagnetic field of the MLMC300 linear motor, the thrust generation mechanism, magnetic field distribution characteristics and power loss law under single-winding independent excitation were analyzed in detail. The research shows that the technology has unique advantages in enhancing system control redundancy, reducing phase-to-phase electromagnetic interference, optimizing thermal management, and achieving decoupling control of multi-degree-of-freedom complex motions. This paper elaborates on the hardware circuit design architecture of the high-performance drive system, the current loop optimization algorithm based on predictive control, and the dynamic performance verification process under various complex load conditions. Experimental results show that the technology can effectively improve the thrust linearity of linear motors, significantly reduce thrust volatility, and achieve excellent performance with repeat positioning accuracy ≤2μm, motor continuous thrust ≥300N, peak thrust ≥900N, and maximum speed ≥1.0m/s under MLMC300 project indicators. The research results of this paper not only provide a solid theoretical support for the development of high-performance linear motor drive systems, but also offer an important technical reference for the domestic substitution of high-end intelligent equipment in China, and have extremely high academic value and engineering practice significance.

KEYWORDS

Moving magnet linear motor; Single-winding independent control; Drive technology; Electromagnetic field modeling; Control algorithms; Thrust fluctuation; Decoupled control; High-precision positioning

CITE THIS PAPER

Hu Bing. Key drive technology of moving magnet linear motor based on single-winding independent control. Journal of Electrotechnology, Electrical Engineering and Management (2026). Vol. 9, No.1, 52-57. DOI: http://dx.doi.org/10.23977/jeeem.2026.090106.

REFERENCES

[1] Si Jikai, Xie Lujia, et al. A two-degree-of-freedom linear induction motor control method [J]. Electrical and Information Engineering, 2017, (03): 15-19.
[2] Mo Mingtao, Guan Jifu, et al. A review of topologies and applications of linear oscillating motors [J]. Transactions of China Electrotechnical Society, 2022, 37(21): 5377-5390.
[3] Peng Jingqi, et al. RBF-PID self-learning control of magnetic levitation linear synchronous motor drive system for Motion platform [J]. Manufacturing Technology and Machine Tool, 2022, (06): 18-23.
[4] Gao Feng, et al. Research on permanent magnet Linear Synchronous Motor Drive system based on Improved active Disturbance rejection control [J]. Modern Sensor Technology, 2024, 13(03): 262-271.
[5] Shi, et al. Direct drive servo control technology of permanent magnet AC linear motors [J]. Combined Machine Tool & Automated Machining Technology, 2010, (10): 45-48.

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