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Filter, 1st-order

The Filter, 1st-order is a first-order low-pass filter component that implements the following transfer function:

Symbol

Mask Parameters

NameDescriptionUnitVariable = {Possible Values}
DescriptionUse this field to add all kinds of information about the component
Description = {'string'}
Time constant
Time constant of the first-order filter.sTc = { [0, 1e64] }
Initial input (DC component)Initial value of the DC component magnitude of the output signal for the first simulation cycle. This value cannot be modified during the simulation
InitialOutput = { [0, 1e12] }

Input/Output Signals

Name

DescriptionType

u

Input signalInput

y

Filtered output signal

Output

Sensor Descriptions

Name

DescriptionUnit

u

Input signalNo unit

y

Filtered output signalNo unit

Internal Circuit of Component

Limitations

The Filter, 1st-order component is designed for DC input signals. With AC input signals, the component output presents a temporary offset corrected after several time steps.

Example Model

This example demonstrates the use First order and Second order filter blocks. A 60Hz sinusoidal signal is given as an input to the first order low pass filter block with time constant of 2.652ms

Simulation results

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