Multi-objective Stratified Optimization Design of Tubular Permanent Magnet Linear Motors with Nonuniform Teeth for Active Suspension

doi:10.12382/bgxb.2022.0756

Abstract

Abstract:

A Halbach tubular permanent magnet linear motor with a non-uniform teeth structure is proposed in this study to solve the problems of high ripple and low force density of a linear electromagnetic active suspension system. The end force model is derived using the analytical method, and the effects of non-uniform teeth structure on the output performance of the motor are analyzed. Based on the analysis results, five parameters, including the axial length and radial cut length of the end teeth, thickness and radial-magnetization length of the permanent magnet, and length of the inner teeth, are selected as optimization factors. Taguchi and response surface methods are adopted to optimize the maximum output force and minimum ripple of force simultaneously, and the optimal parameters are obtained. Finally, a prototype is manufactured and an experimental platform is set up to carry out the no-load and load experiments to verify the effectiveness of the proposed structure and its optimization methods.

Key words: tubular permanent magnet linear machine, active suspension, Halbach PM array, multi-objective optimization, force ripple

CLC Number:

TM359.4

YAN Jianhu, LI Biao, SHI Yan, ZHANG Lingyu, HENG Peiran. Multi-objective Stratified Optimization Design of Tubular Permanent Magnet Linear Motors with Nonuniform Teeth for Active Suspension[J]. Acta Armamentarii, 2023, 44(1): 40-50.

Figures/Tables 23

References 22

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参数	数值
额定电磁推力/N	220
最大电磁推力/N	650
最大行程/mm	±20
最大安装长度/mm	150
最大直径/mm	80

参数	数值
额定电磁推力/N	220
最大电磁推力/N	650
最大行程/mm	±20
最大安装长度/mm	150
最大直径/mm	80

电机参数	数值	电机参数	数值
极对数p	5	气隙直径D_δ/mm	40
极距τ_p/mm	10	初级轭高H_y/mm	3
气隙δ/mm	1	内部齿长L_t/mm	2.9
绕组匝数N	56	永磁体长L_m/mm	5
频率f/Hz	60	永磁体高H_m/mm	3.5
初级长度L_p/mm	100	边端齿高H_b/mm	18
次级长度L_s/mm	140	边端齿长L_b/mm	2.9

电机参数	数值	电机参数	数值
极对数p	5	气隙直径D_δ/mm	40
极距τ_p/mm	10	初级轭高H_y/mm	3
气隙δ/mm	1	内部齿长L_t/mm	2.9
绕组匝数N	56	永磁体长L_m/mm	5
频率f/Hz	60	永磁体高H_m/mm	3.5
初级长度L_p/mm	100	边端齿高H_b/mm	18
次级长度L_s/mm	140	边端齿长L_b/mm	2.9

参数	取值范围/ mm	水平
参数	取值范围/ mm	1	2	3	4
L_t	2.9~3.2	2.9	3.0	3.1	3.2
L_b	2.8~3.4	2.8	3.0	3.2	3.4
H_e	1.0~4.0	1.0	2.0	3.0	4.0
H_m	3.0~6.0	3.0	4.0	5.0	6.0
L_m	5.5~7.0	5.5	6.0	6.5	7.0