正交试验法分析结构参数对并联机构精度的影响  

Analysis on Influence of Structural Parameters on Precision of Parallel Mechanism by Orthogonal Test Method

作　　者：于世杰 吴丽 YU Shijie;WU Li(32306 Army of the Chinese People’s Liberation Army;Qingdao Insuitute of Ocean Engineering of Tianjin University,Qingdao 266000,China)

机构地区：[1]中国人民解放军32306部队 [2]天津大学青岛海洋工程研究院,山东青岛266000

出　　处：《机械工程师》2019年第7期76-78,共3页Mechanical Engineer

摘　　要：为了研究多个结构参数同时变化对输出位姿误差的影响,提出了一种正交试验综合分析法。以3-UPS&S并联机构为研究对象,通过矢量法建立机构误差模型,然后利用正交试验法综合分析该机构4个结构参数同时发生变化时对输出位姿误差的影响。在给定一组误差源下,通过分析试验结果得到了一组最优的结构参数组合,同时通过极差分析得到了各结构参数对输出位姿误差的影响程度。试验结果表明,该方法不仅解决了多因素对位姿误差的影响,并且有效解决了大规模试验难以实施的缺点。In order to study the influence of simultaneous changes of multiple structural parameters on the output pose error,an orthogonal analysis comprehensive analysis method is proposed.Taking the 3-UPS&S parallel mechanism as the research object,the mechanism error model is established by vector method,and then the orthogonal test method is used to comprehensively analyze the influence of the four structural parameters of the mechanism on the output pose error.Under a given set of error sources,a set of optimal structural parameter combinations is obtained by analyzing the test results.Through the range analysis,the degree of influence of each structural parameter on the output pose error is obtained.The experimental results show that the method not only solves the influence of multi-factors on pose error,but also effectively solves the shortcomings that large-scale experiments are difficult to implement.

关 键 词：正交试验 并联机构 输出位姿误差 结构参数 

分 类 号：TH112[机械工程—机械设计及理论]