適応フィルタを使った切削振動系のインプロセス同定

概要

論文の詳細を見る
The present paper deals with a method of estimating damping ratios and natural frequencies continuously in process of a cutting operation, which represent an instantaneous state of a cutting vibration system. A new algorithm of estimating plural sets of damping ratios and natural frequencies directly evading a time-consuming factorization is proposed, which uses plural time series models interconnected and corresponding adaptive filters. The function, accuracy and the follow-up ability to the change of the vibration system are confirmed through a simulation by using preknown time series data. In order to verify the applicability of the proposed method to practical cutting data, acceleration signals detected at a tool shank during turning tapered SS 41 workpieces are analyzed. As results of the analyses, changes of damping ratios and natural frequencies related to chatter vibrations are clearly observed and an effectiveness of the method is confirmed.
公益社団法人精密工学会の論文
1991-03-05