期刊
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
卷 136, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2019.106528
关键词
Milling process; Active chatter suppression; Sliding mode control; Electromagnetic actuator
资金
- National Natural Science Foundation of China [51575434, 51575428]
- National Major Science and Technology Projects of China [2017ZX04013001]
- Natural Science Basic Research Plan in Shaanxi Province of China [2018JM5163]
- China Scholarship Council
Milling chatter is a major factor limiting the machining efficiency and imposing poor surface finishes and machine tool damage, which is highly needed to be suppressed in the machining process. In order to control the unwanted chatter vibration, this research presents active milling chatter suppression using sliding mode control and electromagnetic actuator. The model of active milling chatter control system, with the electromagnetic actuator being considered, is presented firstly. In addition, the steady states caused by static milling force are neglected in the presented model. Then, an active sliding mode controller is designed, in which a dynamic output feedback sliding surface is introduced and the velocity state is not needed in the closed-loop system. The time delay item in the model are considered as disturbance, which makes the controller design easier. Simulation results show that the chatter-free domain is significantly improved in a wide spindle speed range. Milling experiments are also performed on a designed spindle system integrated with electromagnetic actuator, and the experimental results illustrate that the milling chatter can be well suppressed with the presented method and system, which shows advantages of robustness and practicality. (C) 2019 Elsevier Ltd. All rights reserved.
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