P, PD, PI and PID controls
of a high order process:
stability and optimization

Introduction

Lesson
CAC 04

Objectives

Purposes
To define the concepts of stability, overelongation, correction time and optimization
To graphically determine Tu  and   Tg
To experimentally determine the influence of  KP, TI  and  TD on the overelongation and on the correction time, for the different controllers (P, PD, PI and PID)
To optimize a PID controller for the control of a 4th order process

Modules and instrumentation

DC Power Supply DL 2613
Voltage Reference Generator DL 2614
PID Controller DL 2622
Simulated Controlled System (2) DL 2675
Double trace storage oscilloscope, complete with probes

or



Supervision and data acquisition unit DL UDA
Connecting cables
Single Pole Push Button DL PP-Mod
Single Pole Switch DL PS-Mod

Assembly diagram

SCACR4.gif (49333 byte)