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Open AccessArticle

A Non-Delay Error Compensation Method for Dual-Driving Gantry-Type Machine Tool

1
School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China
2
School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
3
Department of Mechanical Engineering, School of Engineering, University of Birmingham, Birmingham B15 2TT, UK
*
Author to whom correspondence should be addressed.
Processes 2020, 8(7), 748; https://doi.org/10.3390/pr8070748
Received: 26 May 2020 / Revised: 24 June 2020 / Accepted: 25 June 2020 / Published: 27 June 2020
The drive at the center of gravity (DCG) principle has been adopted in computer numerical control (CNC) machines and industrial robots that require heavy-duty and quick feeds. Using this principle requires accurate corrections of positioning errors. Conventional error compensation methods may cause vibrations and unstable control performances due to the delay between compensation and motor motion. This paper proposes a new method to reduce the positioning errors of the dual-driving gantry-type machine tool (DDGTMT), namely, a typical DCG-principle-based machine tool. An error prediction method is proposed to characterize errors online. An algorithm is proposed to quickly and accurately compensate the errors of the DDGTMT. Experiment results verify that the non-delay error compensation method proposed in this paper can effectively improve the accuracy of the DDGTMT. View Full-Text
Keywords: drive at the center of gravity (DCG); machine tool accuracy; error prediction; non-delay error compensation; dual-driving system drive at the center of gravity (DCG); machine tool accuracy; error prediction; non-delay error compensation; dual-driving system
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MDPI and ACS Style

Liu, Q.; Lu, H.; Zhang, X.; Qiao, Y.; Cheng, Q.; Zhang, Y.; Wang, Y. A Non-Delay Error Compensation Method for Dual-Driving Gantry-Type Machine Tool. Processes 2020, 8, 748.

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