Xiao'e Ma, Ningyu Gu

(School of Biomedical Engineering, Beihang University)

Abstract：

With the increasing use of high-speed electric surgical tools, research on their core component “the drive motor” is becoming more and more extensive. Permanent magnet brushless DC motors have attracted much attention in this application field due to their small size, high efficiency, stability, and reliability. This article introduces the composition and advantages of permanent magnet brushless DC motors. Based on the clinical application requirements of high-speed electric surgical tools, the selection and optimization design schemes of the permanent magnet brushless DC motor body, position detection circuit, and commutation control circuit are discussed and compared, and the corresponding key technical difficulties and solutions are pointed out. Finally, a summary and outlook were made on the future research focus, providing theoretical reference for the design and development of permanent magnet brushless DC motors in high-speed electric surgical tools.

Key Words：

high speed electric surgical tools; permanent magnet brushless DC motor; structural selection scheme; optimization design strategy