摘要
针对永磁磁悬浮轴承的承载力、刚度过低等问题,对永磁磁悬浮轴承的结构单元构成、结构优化等方面进行了研究,设计了一种由径向三环磁悬浮轴承和轴向磁悬浮轴承两个独立悬浮单元构成的,适用于垂直轴盘式电机的全悬浮永磁轴承系统。采用田口算法对上轴向磁环进行了多目标优化,通过结构对比、参数确定以及仿真优化,详细分析了径向磁悬浮轴承与轴向磁悬浮轴承的设计方案;并以磁环宽度w、磁环高度h及磁环间气隙g为优化变量,以承载力、刚度为优化目标,利用仿真建模验证了该方法的有效性。研究结果表明:设计的新型径向磁悬浮轴承刚度提高了2.4倍,优化后的轴向磁悬浮轴承承载力提高了175 N,轴向刚度提高了1.5倍;系统悬浮性能优良、结构紧凑、参数设计合理。
Aiming at the problem of bearing capacity and rigidity of permanent magnet magnetic suspension bearings,the structural unit composition and structural optimization of permanent magnetic suspension bearings were studied.A full suspension permanent magnet bearing system for vertical axis disc motor consisting of two independent suspension units of radial three-ring magnetic suspension bearing and axial magnetic suspension bearing was designed.The multi-objective optimization of the upper axial magnetic ring was carried out by using the Taguchi algorithm.Through the structural comparison,parameter determination and simulation optimization,the design scheme of the radial magnetic suspension bearing and the axial magnetic suspension bearing was analyzed in detail.With the magnetic ring width w,the magnetic ring height h and the magnetic gap g between the magnetic rings as the optimization variables,the bearing capacity and stiffness were optimized,and the effectiveness of the method was verified by simulation modeling.The results indicate that the designed radial magnetic suspension bearing stiffness is improved by 2.4 times,the optimized axial magnetic suspension bearing capacity is increased by 175 N,the stiffness is improved by 1.5 times,the system suspension performance is excellent,the structure is compact,and the parameter design is reasonable.
作者
王晋美
孙京红
李光华
张镇驿
朱军
WANG Jin-mei;SUN Jing-hong;LI Guang-hua;ZHANG Zhen-yi;ZHU Jun(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China;Henan Electronic Information Product Quality Supervision and Inspection Institute,Zhengzhou 450002,China)
出处
《机电工程》
CAS
北大核心
2020年第6期621-627,共7页
Journal of Mechanical & Electrical Engineering
基金
河南省发展和推广重点研究专项项目(182102210052)
河南省高校基本科研业务费专项资金资助项目(NSFRF140115)
河南省科技重点研究项目(12A470004)。
关键词
磁力轴承
轴承承载力
刚度
多目标优化
magnetic bearing
bearing capacity
stiffness
multi-objective optimization
