PID controller Design

“Good, better, best. Never let it rest. Til your good is

Classical Controller-
PID Controller

Introduction

Design PID control
Know mathematical model ? various design techniques
Plant is complicated,

PID Control

A closed loop (feedback) control system, generally with Single Input-Single

Output equation of PID controller in time domain

The Characteristics of P, I, and D controllers

Figure 4.11 Process reaction curve

PID Controller- Ziegler Method #1

Figure 4.11 Process reaction curves (R.C.Dorf et.al and Others)

PID Controller- Ziegler

Figure 4.12 Quarter decay ratio

PID Controller- Ziegler Method #1

PID Controller- Ziegler Method #1

Figure 4.13 Determination of ultimate gain and period

PID Controller- Ziegler Method

Figure 4.14 Neutrally stable system

PID Controller- Ziegler Method #2

Ti - the controller's integrator time constant
Td - the controller's derivative time constant

PID

Example: Method # 1

Figure 4.15 A measured process reaction curve

Example: Method # 2

Figure 4.17 Ultimate period of heat exchanger

Exercise # 1-PID Controller

Practice-Exercise