Adding a Forcing Function

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A forcing function is required to run a model. For our model we'll add a time forcing function. Later, when adding our loads (which in our model will represent electrodes) we'll associate one of these loads with this function.

The time function is generally a short pulse that allows the system response to be extracted from a device or that can be used to analyse reflections from target. We provide a variety of time functions and you can also define your own.

Note: OnScale is based in the time domain. We work with analog signals (waveforms varying over time) that directly correlate with real-world signals. This lets you recreate experimental setups directly in the software to get like-for-like datasets out.

Adding the Ricker Wavelet Function

Follow these steps:

  1. In the Model Tree, expand Forcing Functions.
  2. Beside Time, click . The Define Input Drive Function window shows.
  3. In the dropdown, select Ricker Wavelet.

    define-input-drive-function.png

  4. Click Insert.

Our time forcing function is added to the Model Tree.

Ricker Wavelet in the Frequency Domain

For the record, here's how the Ricker Wavelet input function looks in the frequency domain:

ricker-pulse-frequency.png

What Next?

Next let's add the parameters we'll need.

Next Page: Adding Parameters

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