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以时间序列与系统分析理论为基础，通过建立实测铣削信号的ＡＲ（ｎ）自回归系统模型，系统研究了铣削过程中振动能量与切削状态的关系以及各振动模态的阻尼变化与切削状态的定性关系。试验分析表明：在不同的切削状态下，铣削振动系统总的振动能量基本上保持不变；而铣削振动系统的结构薄弱模态所占有的能量和振动阻尼则随系统切削状态变化而波动较大，且有突发现象。两者皆可以作为定量分析和识别铣削加工过程稳定性的重要特征量。
Based on the theory of time series and system analysis, the AR (n) autoregressive system model of the measured milling signal is established. The relationship between the vibration energy and the cutting state and the damping change and cutting state of each vibration mode Qualitative relationship. The experimental results show that the total vibration energy of the milling vibration system remains basically unchanged under different cutting conditions, while the energy and vibration damping of the weak vibration mode of the milling vibration system fluctuate greatly with the cutting conditions of the system , And there is a sudden phenomenon. Both can be used as an important feature for quantitative analysis and identification of the stability of the milling process.