转台运动误差分离与角度优化技术研究  

Research on Error Motion Separation and Angle Optimization of Rotary Table

作　　者：邵萌 邵宪磊 安冬 吴昊 陈喆 SHAO Meng;SHAO Xianlei;AN Dong;WU Hao;CHEN Zhe(School of Mechanical Engineering,Shenyang Jianzhu University;China National Heavy Duty Truck Group Automotive Research Institute)

机构地区：[1]沈阳建筑大学机械工程学院 [2]中国重汽集团汽车研究总院

出　　处：《仪表技术与传感器》2024年第1期107-113,共7页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(51975130);辽宁省教育厅基础科研项目(LJKMZ20220915)。

摘　　要：为了解决测量转台运动误差时存在的多种误差耦合问题,提出了一种基于多点法的运动误差分离方法。首先,通过分析转台在回转过程中多自由度误差的运动特性,提出了一种端面四点误差分离方法,在分离出测量盘下表面的平面度误差的同时,可完成倾斜误差和轴向误差的解耦。然后,建立了该方法的误差传递函数,采用麻雀算法(SSA)进行优化,寻找不同阶次下受谐波抑制影响最小的最优布置角,提高了误差解耦精度。最后,通过仿真与实验的方式对该方法进行验证。仿真结果表明,端面四点误差分离方法对轴向、倾斜误差的分离精度(相对误差)分别为1.934%和9.177%。实验结果表明,分离的运动误差与转台标定误差相符合,验证了该方法能够精确获得转台运动误差。In order to solve the problem of multiple error coupling when measuring the error motion of rotary table,a method of error motion separation based on multi-point method was proposed.Firstly,by analyzing the motion characteristics of multi-degree-of-freedom errors in the rotary process of the rotary table,an end-four-point error separation method was proposed,which can complete the decoupling of tilt error and axial error while separating the flatness error on the lower surface of the measuring disk.Then,the error transfer function of the method was established,and the sparrow algorithm(SSA)was used for optimization to find the optimal arrangement angle that was minimally affected by harmonic suppression at different orders,which improved the error decoupling accuracy.Finally,the method was verified by means of simulation and experiment.The simulation results show that the separation accuracy(relative error)values of axial and tilt errors by the end four-point method are 1.934%and 9.177%,respectively.The experimental results show that the separated error motion is consistent with the calibration error of the rotary table,which verifies that the method can accurately obtain the error motion of the rotary table.

关 键 词：精密转台 误差分离技术 测量分析 角度优化 优化算法 运动误差 

分 类 号：TH70[机械工程—仪器科学与技术]