TY - JOUR
T1 - Design and Manufacture of a Linear Actuator Based on Magnetic Screw Transmission
AU - Ling, Zhijian
AU - Zhao, Wenxiang
AU - Rasmussen, Peter Omand
AU - Ji, Jinghua
AU - Jiang, Yang
AU - Liu, Zhengmeng
N1 - Funding Information:
This work was supported in part by the National Natural Science Foundation of China under Project 51977099 and Project 51777090,
Publisher Copyright:
©IEEE.
PY - 2021/2
Y1 - 2021/2
N2 - This article proposes a practical design guide for a linear electromagnetic actuator based on the concept of magnetic screw transmission, in which manufacturing and assembly technologies are investigated. The surface-inserted design is first used to form a required helical-shape magnetic pole, which exhibits simple processing, high precision, and robust structure. Moreover, different topologies are developed using the 3-D finite-element analysis aided design, with the goal of optimizing thrust force. In addition, different number of permanent-magnet (PM) segments are first proposed to reduce the cogging effect. Afterward, the linear actuator integrates the rotary machine and the magnetic screw together to construct a compact design and decouples the magnetic circuits. The decoupling design focuses on the self-shielding effect of the Halbach PM array, and the special bearing supports are selected to avoid the eccentricity. Finally, a prototype is built using the developed techniques. Experiments are carried out on a linear test bench, verifying the theoretical analysis.
AB - This article proposes a practical design guide for a linear electromagnetic actuator based on the concept of magnetic screw transmission, in which manufacturing and assembly technologies are investigated. The surface-inserted design is first used to form a required helical-shape magnetic pole, which exhibits simple processing, high precision, and robust structure. Moreover, different topologies are developed using the 3-D finite-element analysis aided design, with the goal of optimizing thrust force. In addition, different number of permanent-magnet (PM) segments are first proposed to reduce the cogging effect. Afterward, the linear actuator integrates the rotary machine and the magnetic screw together to construct a compact design and decouples the magnetic circuits. The decoupling design focuses on the self-shielding effect of the Halbach PM array, and the special bearing supports are selected to avoid the eccentricity. Finally, a prototype is built using the developed techniques. Experiments are carried out on a linear test bench, verifying the theoretical analysis.
KW - Finite-element analysis (FEA)
KW - linear electromagnetic actuator
KW - magnetic transmission
KW - manufacture and assembly
KW - permanent magnet (PM)
UR - http://www.scopus.com/inward/record.url?scp=85095809624&partnerID=8YFLogxK
U2 - 10.1109/TIE.2020.2967731
DO - 10.1109/TIE.2020.2967731
M3 - Journal article
AN - SCOPUS:85095809624
SN - 0278-0046
VL - 68
SP - 1095
EP - 1107
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 2
M1 - 8967242
ER -