WOLFRAM SYSTEMMODELER

Filter

Demonstrates the Continuous.Filter block with various options

Diagram

Wolfram Language

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SystemModel["Modelica.Blocks.Examples.Filter"]
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Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

This example demonstrates various options of the Filter block. A step input starts at 0.1 s with an offset of 0.1, in order to demonstrate the initialization options. This step input drives 4 filter blocks that have identical parameters, with the only exception of the used analog filter type (CriticalDamping, Bessel, Butterworth, Chebyshev of type I). All the main options can be set via parameters and are then applied to all the 4 filters. The default setting uses low pass filters of order 3 with a cut-off frequency of 2 Hz resulting in the following outputs:

Filter1.png

Parameters (5)

order

Value: 3

Type: Integer

Description:

f_cut

Value: 2

Type: Frequency (Hz)

Description:

filterType

Value: Modelica.Blocks.Types.FilterType.LowPass

Type: FilterType

Description: Type of filter (LowPass/HighPass)

init

Value: Modelica.Blocks.Types.Init.SteadyState

Type: Init

Description: Type of initialization (no init/steady state/initial state/initial output)

normalized

Value: true

Type: Boolean

Description:

Components (5)

step

Type: Step

Description:

CriticalDamping

Type: Filter

Description:

Bessel

Type: Filter

Description:

Butterworth

Type: Filter

Description:

ChebyshevI

Type: Filter

Description: