PI Control of First Order Process

Description| How it works

This app simulates the step response of a feedback control system consisting of a first order process and a PI controller.

Control loop


.xls file (102 KB) or .zip file (29 KB)

How to use

The PI controller is specified by the controller gain (C) and the integral time (TI). The first order process without time delay is specified by the process gain (K) and lag time (T).

Key in values of K, T, C and TI into the cells B5, B6, B9 and B10 respectively. The step response is displayed in the chart. The max time is to be entered into the cells B13.

See this example screen for the step response with the following inputs:

K = 2
T = 5

C = 1
TI = 0.1

PI Control Simulation

Also See:

PID Loop Simulator

Ziegler Nichols Tuning Calculator

Bode Plot Generator

PI Control of Integrating Process