Chatter detection using principal component analysis in cold rolling mill
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Online publish date: 2018-01-08
Publish date: 2018-03-12
Submission date: 2017-10-29
Final revision date: 2017-12-22
Acceptance date: 2018-01-02
Diagnostyka 2018;19(1):73–81
Most cold rolling mills are prone to chatter problem. Chatter marks are often observed on the strip surface in cold rolling mill leading to downgrade and rejection of rolled material. Chatter impact product quality as well as productivity of mill. In absence of online chatter detection no corrective action can be taken immediately and whole campaign gets affected. Most conventional approach for online chatter detection is by using vibration measurement of mill stands in time & frequency domain. Present work proposes two approaches to detect chatter in cold rolling mill using a statistical technique called Principal Component Analysis (PCA). In this paper two methods are used for chatter detection. First method applies PCA on Fast Fourier Transform (FFT) to differentiate between chatter and non-chatter condition. Second method applies PCA on statistical parameters calculated from raw vibration data to detect chatter.
Najmul Islam Usmani   
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