中国机械工程2018，Vol.29Issue(4)：441-449,9.DOI:10.3969/j.issn.1004-132X.2018.04.011
滚珠丝杠进给系统滚动结合部径向动态特性参数辨识
Radial Dynamic Characteristic Parameter Identification of Rolling Joints in Ball Screw Feed Systems
摘要
Abstract
In allusion to the problems that the radial dynamic characteristic parameters of rolling joints were difficult to determine in ball screw feeding systems,a method to identify the radial dynam-ic characteristic parameters of rolling joints in assembled feed systems was proposed.The screw was simplified as an Euler-Bernoulli beam to create its radial vibration equation under the excitation of har-monic vibration forces,the experiments were designed to obtain the measurement points'radial vibra-tion displacements of the ball screw,combining with the theoretical values calculated by the radial vi-bration equation of the ball screw to establish the optimization goal function,and then the radial stiff-nesses and the radial damping parameters of the rolling joints were identified by using AFSA.Taking a self-developed ball screw feed drive test bench as the research obj ect,the radial stiffnesses and radial damping parameters of its guide pair,the ends of bearings,and its rolling joints in ball screw assembly were identified by using the proposed method.The experimental results demonstrate that the maxi-mum errors of measurement point radial vibration displacements between the calculated values and the tested ones are as 3.0% based on the parameters of rolling joints calculated by the proposed method, and verify the correctness and validity of the proposed method.关键词
滚珠丝杠进给系统/滚动结合部/径向动态特性参数/辨识/径向振动位移/人工鱼群算法Key words
ball screw feeding system/rolling joint/radial dynamic characteristic parameter/identification/radial vibration displacement/artificial fish swarm algorithm(AFSA)分类
机械制造引用本文复制引用
朱坚民,郑洲洋,胡育佳,周亚南..滚珠丝杠进给系统滚动结合部径向动态特性参数辨识[J].中国机械工程,2018,29(4):441-449,9.基金项目
国家自然科学基金资助项目(50975179) （50975179）
上海市科委科研计划资助项目(17060502600) （17060502600）
沪江基金资助项目(D14005) （D14005）
