Page 32 - Vibrations

You need to be able to find the smaller

components.

The Impulse Function – Vibration Diagnostic

The impulse Function is defined as,

′
= ( − )

It is a single event which occurs at

t = t’.

The Fourier Transform of this will

give you the spectral content.

+∞
() = ∫ ( − ′)

−∞

Using the property,

′
′
∫ ( − )() = ( )

() = ′

And

∗
() = − ′

Therefore,

2
|()| = 1

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