| 实现机床颤振早期诊断的一个新的特征量 |
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| 引用本文： | 梅志坚,昌松,师汉民,杨叔子.实现机床颤振早期诊断的一个新的特征量[J].武汉理工大学学报,1990(2). |
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| 作者姓名： | 梅志坚 昌松 师汉民 杨叔子 |
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| 作者单位： | 华中理工大学，华中理工大学，华中理工大学，华中理工大学 |
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| 基金项目： | 国家自然科学基金，国家教委科技基金 |
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| 摘 要： | 本文通过大量试验信号的互谱分析,找出了颤振建立过程中切削力和振动加速度信号互谱的特征变化:主频带的移动及其相位差的变化.然后,基于互谱与互相关函数的关系.分析了一步互相关系数的变化与互谱上述两种特征变化的内在联系.从而可将一步互相关系数作为机床颤振早期诊断的一个特征量.试验结果表明,该特征量是有效的.
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| 关 键 词： | 颤振 机床 早期诊断 特征量 互相关系数 互谱 |
A Featyre Variable for Early Stage Diagnosis of Machine Tool Character |
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| Mei Zhijian Chang Song Shi Hanmin Yang Shuzi.A Featyre Variable for Early Stage Diagnosis of Machine Tool Character[J].Journal of Wuhan University of Technology,1990(2). |
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| Authors: | Mei Zhijian Chang Song Shi Hanmin Yang Shuzi |
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| Affiliation: | Mei Zhijian Chang Song Shi Hanmin Yang Shuzi |
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| Abstract: | Based on a lot of experiments,two characteristic changes of the acceleration and thecutting force signals during the transient from stable cutting to chattering are analyzed:the shift of main frequency band of cross spectrum and the variation of phase difference ofthe two signals.The inner connection between one step cross correlation coefficent and theabove characterisitc changes is analyzed in a deep-going way.The theoretical analysis theexperiments show that one step cross correlation coefficient is a effective featurevariable for diagnosing chatter in its early stage. |
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| Keywords: | Chatter Machine tool Early stage diagnosis Feature variable Cross correlation coefficent Cross spectrum |
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