基于响应面法的滑动结合面动态特性参数优化识别  

Optimization Identification for Dynamic Characteristic Parameters of Sliding Joints Based on Response Surface Methodology

作　　者：汪中厚[1] 袁可可[1] 李刚[1] 

机构地区：[1]上海理工大学,上海200093

出　　处：《中国机械工程》2016年第5期622-626,共5页China Mechanical Engineering

摘　　要：针对机床滑动结合面动态特性参数识别困难和现有方法模型复杂、计算量大等问题,提出了基于实验模态分析和响应面法的动态特性参数优化识别方法。通过试验设计获取样本点构造滑动结合面的多项式响应面模型,以响应面的计算结果与实验模态分析结果的相对误差构造目标函数,采用自适应模拟退火算法优化求解,从而识别出滑动结合面的动态特性参数。以机床动态特性分析实验台上立柱导轨与滑座间的滑动结合面为实例进行了建模、实验、参数识别等分析。结果表明,采用所提出的方法可实现较高的识别精度,可显著提高识别效率。In allusion to the difficulties to determine dynamic characteristic parameters of sliding joints,and the complexity and large calculation quantity of the current method,a new method combining the response surface and experimental modal analysis was proposed to identify the dynamic characteristic parameters.The sample points were acquired by experimental design to construct the polynomial response surface model.The relative error between the results of the calculated response surface and the actual test was taken as the objective function.An adaptive simulated annealing algorithm was employed to optimize parameters of the function.Modeling,experiments and parameter identification were conducted with the sliding joints between column guide way and slide carriage of the experimental machine tool.The analytic results indicate that the parameter identification achieves high precision and significantly improves the efficiency.

关 键 词：滑动结合面 动态特性 参数识别 响应面法 

分 类 号：TG502.1[金属学及工艺—金属切削加工及机床]