NDLI: Efficiency analysis of sinusoidal stiffness variation method for chatter suppression

Content Provider	IEEE Xplore Digital Library
Author	Yuxin Sun Zhenhua Xiong
Copyright Year	2015
Description	Author affiliation: Sch. of Mech. Eng., Shanghai Jiao Tong Univ., Shanghai, China (Yuxin Sun; Zhenhua Xiong)
Abstract	Chatter known as an unstable state, is a self-excite vibration which limits productivity of machining processes. To achieve stable machining and high productivity, chatter should be suppressed before it is fully developed. Sinusoids stiffness variation is an efficient method of chatter suppression that continuously varies the stiffness of the tool post. The frequency and the amplitude of sinusoids naturally play a critical role in the performance of chatter suppression. However, previous researches on stiffness variation are mostly qualitative based on experimental tests. Thus, this paper quantitatively investigates the effects of the frequency and the amplitude on chatter suppression from theoretical point of view. Both joint and individual effects of the frequency and the amplitude on the control efficiency are explored using semi-discretization method. The improvement of the stability limit is verified by the time response using Simulink. Moreover, the influence of the initial phase is studied and suggests the sinusoidal stiffness variation is dependent on the initial phase when the frequency is larger than 0.25 Hz.
Sponsorship	IEEE Ind. Electron. Soc. (IES)
Starting Page	1328
Ending Page	1333
File Size	363669
Page Count	6
File Format	PDF
e-ISBN	9781467391078
DOI	10.1109/AIM.2015.7222723
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-07
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stability analysis Turning Frequency control Vibrations Delay effects Mathematical model
Content Type	Text
Resource Type	Article

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