PT1-Term

This function block implements a first-order filter using the difference equation.

Operations

The PT1-term realizes the following function:

The coefficient K will be calculated only at the program start or if T1 is changed.

Step response:

Signals

Name I/O Type(s) Function
Xe I FLOAT Input signal
T1 I FLOAT Time constant in [s]
Xa O FLOAT Output signal

Comments

The function block may be used in analogue measurement filtering applications, or as part of a dynamic system simulation.