螺旋槽动压气体轴承的多目标优化设计  

Multi-objective Optimization Design of Spiral Groove Aerodynamic Bearings

作　　者：贾晨辉[1] 杨伟[1] 邱明[1] 

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《机床与液压》2014年第15期63-67,共5页Machine Tool & Hydraulics

基　　金：国家自然科学基金资助项目(51275155);河南省高校科技创新团队支持计划(13IRTSTHN025);河南省教育厅科学技术研究重点项目(13A460251)

摘　　要：以锥面螺旋槽动压气体轴承为研究对象,建立气体轴承润滑分析数学模型,求解轴承的承载力和动特性系数。建立气体轴承的承载力、刚度与稳定性的优化数学模型,采用加权极小极大优化方法对优化数学模型进行求解,得到轴承的优化结构参数。结果表明:采用加权极小极大优化方法求解轴承的结构参数,不仅可以有效地解决各目标函数分量之间相互矛盾的问题,而且使其综合性能进一步提高;权系数的选择影响轴承的综合性能,合理地选择权系数,能够提高轴承的综合性能。By taking the research object of the conical spiral groove aerodynamic bearings,the lubrication analysis mathematical model of bearings was established to solve bearing capacity and dynamic characteristic coefficients.The optimized mathematical model was established for the bearings of capacity,rigidity and stability.The optimized structure parameters of the bearing were obtained by solving the optimized mathematical model with using of the weighted minimax method.The results show that the weighted minimax method can be used to optimize the bearing’s structural parameters,not only can effectively solve the contradictory problem of each ob-jective function,but also make the comprehensive performance further improved.The choice of weight coefficients affects the bearing’s comprehensive performance,and a reasonable choice of the weight coefficients can improve the bearing’s comprehensive performance.

关 键 词：动压气体轴承 锥面螺旋槽 参数优化 极小极大方法 

分 类 号：TH133.3[机械工程—机械制造及自动化]