Mode Decoupled Cutting Force Monitoring by Applying Multi Encoder Based Disturbance Observer
Mode Decoupled Cutting Force Monitoring by Applying Multi Encoder Based Disturbance Observer
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DOI：
10.1016/j.procir.2016.11.111
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Yuki Yamada;Y. Kakinuma
中科院分区：
文献类型：
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作者：
Yuki Yamada;Y. Kakinuma
高精度、宽频带无传感器切削力监测是刀具状态监测的重要技术之一。特别是在铣削加工中，不仅需要对切削力的基频分量进行监测，而且还需要对谐波进行监测，因为它们会导致颤振的发展。本文提出了一种基于多编码器的扰动观测器，通过独立估计刚体模式和振动模式坐标系中的切削力分量来监控加工过程。从铣削试验结果看，包含高次谐波分量的切削力在振动模式下得到了准确的估计，而不会激励更接近共振频率的分量。
High-precision and wideband sensorless cutting force monitoring is one of the important technologies for tool condition monitoring. Particularly in milling, not only the fundamental frequency component of cutting force, but also harmonics need to be monitored, because they could result in the development of chatter. In this study, a process monitoring technique was proposed by the estimation of cutting force components in rigid body mode and vibration mode coordinate systems independently, which was based on multi-encoder based disturbance observer. From milling test results, cutting force including higher harmonics components yielded accurate estimation in the vibration mode without exciting the components that are closer to the resonance frequency.