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3644class="post-3644 post type-post status-publish format-standard hentry category-dats category-tutorial tag-color-plot tag-harmonics tag-intensity tag-order tag-order-plot tag-order-track tag-waterfall tag-waterfall-plot"

Creating Order Plots Using The DATS Rotating Machinery Software

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In this tutorial we will be creating order plots using waterfall and intensity displays using use the DATS.toolbox and Rotating Machinery Analysis option.

To begin, a noise, vibration or other signal of interest should be captured along with a tachometer signal.

In Figure 1 we have loaded a time series (in this case an acceleration signal) and a time series of a tachometer pulse train into the DATS software.

Continue reading Creating Order Plots Using The DATS Rotating Machinery Software

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What is “waterfall smearing”?

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When analysing a waterfall or performing order analysis it is important to consider the frequency resolution or the frequency spacing.

There is often a desire to increase the resolution to finer and finer detail. But that is a process of diminishing returns, and actually fraught with danger. And that danger is waterfall smearing. Continue reading What is “waterfall smearing”?

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How Many Samples Per Revolution Are Required To Study A Particular Order

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When working in the synchronous/angle domain, how many samples per revolution are required to study a particular order.

To study the nth order we need 2*n samples per revolution. Continue reading How Many Samples Per Revolution Are Required To Study A Particular Order

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[Video] Creating order & waterfall plots

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A step-by-step introduction to creating order and waterfall plots from a time history and a tacho signal.

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