Adaptive Compensation of Friction Error for Numerical Control Machine Tool

doi:10.7652/xjtuxb201311012

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Adaptive Compensation of Friction Error for Numerical Control Machine Tool

更新时间：2025-07-09

- Adaptive Compensation of Friction Error for Numerical Control Machine Tool
- Vol. 47, Issue 11, Pages: 65-69+96(2013)
- 作者机构：
  
  西安交通大学机械工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201311012
  CLC： TP271.4
- Online First：10 November 2013，
  
  Published：2013
- 稿件说明：
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Adaptive Compensation of Friction Error for Numerical Control Machine Tool[J]. 2013, 47(11): 65-69+96.
DOI：

Adaptive Compensation of Friction Error for Numerical Control Machine Tool[J]. 2013, 47(11): 65-69+96. DOI： 10.7652/xjtuxb201311012.

摘要

为了提高数控机床的加工精度

降低由摩擦造成的轮廓误差

针对传统摩擦误差补偿方法难以达到最优补偿效果的问题

提出了一种针对数控机床进行摩擦误差自适应补偿的方法。该摩擦误差补偿方法通过摩擦补偿参数学习算法对摩擦误差补偿脉冲幅值进行粗、精学习

并采用广义回归神经网络拟合生成具有高精度的摩擦补偿脉冲幅值函数

实现了对摩擦误差自适应补偿。对X-Y轴工作台的摩擦误差自适应补偿实验结果表明

不同工况下过象限处的圆轮廓误差峰值及摩擦补偿效果评价值均降低55%以上

与常规矩形摩擦补偿脉冲相比

具有对伺服进给系统冲击小、摩擦补偿特性适应性强和补偿效果好的优点

能够有效地提高机床的加工精度。

Abstract

To improve the machining precision of numerical control machine tool and reduce contour error caused by friction

a novel adaptive compensation of friction error strategy is proposed to solve the problem that conventional method for compensation of friction error can hardly achieve desired performance. Via coarse and fine learning process for amplitude of compensation pulse

the amplitude function of friction compensation pulse is established by precision curve fitting based on generalized regression neural network algorithm

and the friction error can be compensated adaptively. The new compensation strategy is adopted on a X-Y worktable

the peak of circular contour error in quadrant and the evaluation function value of friction compensation are reduced by more than 55% under different working conditions. Compared with the conventional rectangular pulse friction compensation

the proposed approach effectively improves the machining precision of the machine tool due to the robust adaptability

lower impact on the servo feed system and better compensation performance.

关键词

Keywords

references

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