双直线电机同步进给系统的同步误差分析与预测  

Analysis and Prediction of Synchronization Error in Synchronous Feeding System of Double Linear Motors

作　　者：朱中庆 张春雷[1] 苏爱林 ZHU Zhongqing;ZHANG Chunlei;SU Ailin(School of Mechanical Engineering,Sichuan University,Chengdu Sichuan 610065,China;Chengdu Leetro Automation Co.,Ltd.,Chengdu Sichuan 610093,China)

机构地区：[1]四川大学机械工程学院,四川成都610065 [2]成都乐创自动化技术有限公司,四川成都610093

出　　处：《机床与液压》2023年第4期30-35,共6页Machine Tool & Hydraulics

摘　　要：为了实现龙门双驱的高速、高精度同步需求,搭建双直线电机龙门双驱伺服进给实验平台,对比分析倍福控制器在不同进给速度下双驱同步进给系统的同步误差变化,并分析了加速度、运动位置对同步误差的影响。将同步误差视为随机信号,利用快速傅里叶变换将同步误差的时域信号变换为频域信号,分析龙门双驱系统在不同进给速度下产生的同步误差的频率与幅值。基于速度-位置下同步误差的实验数据,利用正弦曲线拟合建立同步误差与速度-位置影响因素的数学模型,通过实验对比验证该模型对预测同步误差的有效性。In order to realize high-speed and high-precision synchronization requirements of gantry dual drives,a dual linear motor gantry dual drive servo feed experimental platform was built,and the synchronous error changes of the dual-drive synchronous feeding system of Beckhoff controllers under different feed speeds were compared and analyzed.The influences of acceleration and motion position on the synchronization error were analyzed.The synchronization error was regarded as a random signal,and the time-domain signal of the synchronization error was converted into a frequency-domain signal by means of fast Fourier transform,and the fre quency and amplitude of the synchronization error of gantry dual-drive system at different feed speeds were analyzed.Based on the experimental data of the velocity-position pair synchronization error,a mathematical model of the synchronization error and the velocity-position was established by sinusoidal fitting,and the effectiveness of the model for predicting the synchronization error was verified by test.

关 键 词：双驱同步系统 同步误差分析 FFT变换 正弦曲线拟合 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置] TH166[自动化与计算机技术—控制科学与工程]