摘要
根据似然比检验原理提出了一种新的机床切削颤振监测统计量，能识别切削过程中产生的信噪比为０．１５的微弱振动成份。文章还就颤振监测工作特性、颤振监测门限值设置等有关问题进行了分析讨论。颤振监测考证试验在一台数控车床上进行。
Based on the likelihood ratio test theory,a new detection statistic is proposed in this paper for monitoring the machine tool cutting chatter development. Using the proposed chatter detection statistic to monitor the machine tool cutting system, the weak chattering vibration components with the signal noise ratio equal to 0 15 can be recognized.Also,this paper deals with the related problems including the operating characteristic of chatter detection and the determination of chatter discrimination threshold,and so on.The validity of the chatter detection is demonstrated from the experimental data in numeric control turning.
出处
《振动工程学报》
EI
CSCD
1997年第2期139-146,共8页
Journal of Vibration Engineering
基金
国家自然科学基金
关键词
切削振动
机床
颤振
监测
似然比检验
cutting vibration
machine tools
chatter
detection
likelihood ratio test
