Interpretation of mill vibration signal via wireless sensing
Interpretation of mill vibration signal via wireless sensing
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DOI：
10.1016/j.mineng.2010.08.014
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发表时间：
2011-02
影响因子：
4.8
通讯作者：
Sarada Prasad Das;D. Das;S. Behera;B. Mishra
中科院分区：
文献类型：
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作者：
Sarada Prasad Das;D. Das;S. Behera;B. Mishra
滚筒磨机发出的振动可以被捕获以评估其性能。我们解释一米直径磨机响应磨机速度、岩石/颗粒尺寸、球数量和浆料粘度变化的振动特征。位于磨机外壳表面的 ±500g 三轴加速度计带有无线发射器，将振动信号传输到连接到 PC 的接收器。由于使用无线数据传输，振动信号的质量得以保留。对频域中滤波后的振动信号进行平均，然后将其用作用于比较目的的参数。这种信号分析方法最适合比较磨机的振动响应与操作参数的变化。磨机壳体振动特征被证明是一个很好的指标，可以用来确定湿磨与干磨条件下磨机性能的差异、粗磨与细磨、磨机速度的变化、球负载等。在开发评估磨机性能的诊断工具的背景下，强调了主要观察结果的更广泛含义。
Tumbling mills emit vibration that can be captured to assess its performance. We interpret the vibration signature of a one meter diameter mill in response to changes in mill speed, rock/particle size, quantity of balls, and slurry viscosity. A ±500g tri-axial accelerometer with a wireless transmitter located on the surface of the mill shell transmits vibration signal to a receiver connected to a PC. The quality of the vibration signal is preserved due to the use of wireless transfer of data. The filtered vibration signal in the frequency domain is averaged which is then used as a parameter for comparison purpose. This approach to signal analysis is most suitable to compare vibration response of a mill to changes in operating parameters. The mill shell vibration signature turned out to be an excellent indicator to establish the differences in mill performance under wet versus dry grinding conditions, coarse versus fine grinding, changes in mill speed, ball load, etc. The broader implication of the main observations in the context of development of a diagnostic tool to assess the mill performance is highlighted.