径向磁轴承柱槽比优化分析

Optimization analysls of pole Notch Ratio for radial magnetic bearings

本文建立了以径向磁轴承最大承载力Fmax为目标 ,在临界温升τ等多约束条件下 ,对定子柱槽比k的优化模型。设计变量选取轴承静态气隙s0 和定子柱槽比k ,采用模糊优化算法。计算结果表明 ,在其它参数不变的条件下 ,轴承静态气隙s0和定子柱槽比k在一定的取值范围内 ,对最大承载力Fmax有规律性影响。适当减小轴承静态气隙s0 和增大定子柱槽比k都能显著提高轴承最大承载能力Fmax,结合试验结果对灵敏度进行了分析 ,并给出了相应结合。

An optimal design model for pole - Notch Ratio k is provided in the paper which takes the maximumcarrying capacity F max as object function with criticai temperature rise τetc. constraints in radial magnetic bearings.The bearing clearance s o and pole - Notch Ratio k are chosen as the design variables. The fuzzy method is applied. Theresult indicates that k and s o would regularly affect F max while k and/or s o. are within specified intervals with otherfactors fixed, i. e. as k is increased and/or s o. is decreased properly, F max would be obviously increased. With ex-perimental result considered. the sensitivity analysis is investigated and the conciusions are drawn.