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The Sine Wave block generates sine values. It is a periodic signal generator and
repeats its pattern of outputs cyclically.
Specifying the Shape
The attributes Amplitude, Bias, and Period specify the shape of the sine wave.
The Amplitude is half the difference between the minimum and maximum
values. The Bias is the mean value between the minimum and the maximum. The
Period is the amount of time that the block takes to complete a cycle.
Specifying a Phase
The Phase Angle determines where the Sine Wave block starts its cycle. It is a
number of degrees between 0 and 360. For example, a Sine Wave block with a
Phase Angle of 0 starts its cycle at the Bias going towards the maximum value. A
Sine Wave block with a Phase Angle of 90 starts its cycle at the maximum value.
60, an Amplitude of 1.0,
and a Bias of 0.0, and a Phase of 270.
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Note: Another way to change the place where the block starts its cycle is to set the
attribute Reset Phase to yes and choose reset from the block's menu. For
more information see "Resetting" below.
Resetting
The attribute Reset Phase determines what happens when you choose reset from
the block's menu:
| If Reset Phase is | The block does this when you choose reset |
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Returns to the beginning of the wave's cycle.
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Continues as before.
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If you change Phase Angle as NOL is running, NOL uses the new value the next
time you reset the block.
Configuring
This is the configuration panel for the Sine Wave block with its default values.
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See Also
For more information on how to use this block, see the sections below
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Copyright © 1996, Gensym Corporation, Inc.