Modeling, identification and analysis of a novel two-axis differential micro-feed system

被引：16
作者：
Du, Fuxin [1 ,2 ]
Li, Peigang [1 ,2 ]
Wang, Zhaoguo [1 ,2 ]
Yue, Mingjun [1 ,2 ]
Feng, Xianying [1 ,2 ]
机构：
[1] Shandong Univ, Sch Mech Engn, Jinan 250061, Shandong, Peoples R China
[2] Shandong Univ, Minist Educ, Key Lab High Efficiency & Clean Mech Manufacture, Jinan 250061, Shandong, Peoples R China
来源：
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY | 2017年 / 50卷
基金：
中国国家自然科学基金;
关键词：
Feed rate; Nonlinear friction; Drive feed system; Low-speed creeping; SPEED;
D O I：
10.1016/j.precisioneng.2017.06.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
With the development of precision and ultra-precision machining technology, the demand of drive feed system increases. Non-linear friction in a conventional drive feed system (CDFS) feeding at low speed is one of the main factors that lead to the complexity of the feed drive. The CDFS will inevitably enter or approach a non-linear creeping area at extremely low speed. A novel two-axis differential micro-feed system (TDMS) is developed in this paper to overcome the accuracy limitation of CDFS. A dynamic model of TDMS is first established. Then, a distributed component friction parameter identification method using a genetic algorithm (GA) to identify the friction parameters of a TDMS is introduced. A proportional-derivate feed drive position controller with an observer-based friction 'compensator is implemented to achieve an accurate trajectory tracking performance. Finally, comparative experiments demonstrate the effectiveness of the TDMS in inhibiting the disadvantageous influence of non-linear friction and the validity of the proposed identification method for TDMS. (C) 2017 Elsevier Inc. All rights reserved.
引用
收藏
页码：320 / 327
页数：8
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