A method to improve position accuracy for the dual-drive feed machines by state-dependent friction compensation

Qi Liu, Hong Lu, Xinbao Zhang, Yongquan Zhang, Yongjing Wang, Zhangjie Li, Meng Duan

Research output: Contribution to journalArticlepeer-review

Abstract

Due to high stiffness and quick response, dual-drive feed machines (DDFMs) are widely used in many precision CNC machines. The tracking errors of the two feed drives directly determine the machines’ accuracy. The performance of the position accuracy can be easily affected by the difference in the friction dynamic characteristics of the two axes. This paper proposes the state-dependent friction compensation (SFC) as an improved DDFMs error compensation method that can achieve better accuracy under unequal friction on the two feed drives. It is theoretically analyzed the influence of friction on the transmission stiffness of DDFMs. Moreover, the effects of time-varying factors (feed rates and mechanical structures) on the friction of dual axes are discussed. The innovation of the paper is that the SFC can adaptively take into account the influence of the variable dual-drive structure and feed rate on DDFMs’ position accuracy, and the compensation method combined with cross-coupled strategy is suitable for general dual-drive structure. Simulation and experiment results show that the proposed method can effectively improve the synchronization accuracy and tracking accuracy in a variety of feed operations (different feed rates, starting, and reversing).

Original languageEnglish
Pages (from-to)1247-1267
Number of pages21
JournalProceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
Volume236
Issue number9
Early online date26 Feb 2022
DOIs
Publication statusPublished - 1 Jul 2022

Bibliographical note

Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the National Nature Science Foundation of China (no. 51675393) and the Hubei Province Intellectual Property “Three Major Projects”: Development of new straightening process and numerical control straightening technology for the motor shaft (Grant no. 2019-1-76).

Publisher Copyright:
© IMechE 2022.

Keywords

  • dual-drive feed machines
  • position accuracy
  • State-dependent friction compensation
  • time-varying factors
  • transmission stiffness

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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