WOLFRAM SYSTEM MODELER
SMTH1First-order exponential smoothing |
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Diagram
Wolfram Language
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SystemModel["SystemDynamics.Functions.SMTH1"]
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Information
This is a first-order exponential smoothing function. It describes the smoothing of information flows.
In engineering terms, this would be called a first-order low-pass filter with the transfer function:
G(s) = 1/(tau*s + 1)
and the time constant
tau = averaging_time.
The initial value of the output can be set. By default, it assumes a value of zero.
Parameters (2)
| averaging_time |
Value: 1 Type: Real Description: Averaging time |
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| smooth_init |
Value: 0 Type: Real Description: Initial value of smoothed variable |
Connectors (2)
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u |
Type: RealInput Description: Input variable |
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y |
Type: RealOutput Description: Output variable |
Components (4)
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Smooth_of_Input |
Type: Level1a Description: General System Dynamics level with no outflow |
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Change_in_Smooth |
Type: Rate_1 Description: Unrestricted rate element with one influencing variable |
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source |
Type: Source Description: This is the (dummy) source model of System Dynamics |
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change_in_smooth |
Type: Change_In_Smooth Description: Smoothing rate |
Used in Examples (1)
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SystemDynamics.WorldDynamics.World3 Human fertility |
Used in Components (1)
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SystemDynamics.WorldDynamics.World3 Life expectancy |