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

Symbol

Mask Parameters

Name	Description	Unit	Variable = {Possible Values}
Description	Use this field to add all kinds of information about the component		Description = {'string'}
Time constant	Time constant of the first-order filter.	s	Tc = { [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	Description	Type
u	Input signal	Input
y	Filtered output signal	Output

Sensor Descriptions

Name	Description	Unit
u	Input signal	No unit
y	Filtered output signal	No 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

HYPERSIM Documentation

Filter, 1st-order