Automation and Drives - SCE

2.5.4 Proportional Controlled System with n Time Delays

The controlled system is called P-Tn system for short.

The time response is described with a differential equation of the nth degree.

The characteristic of the step response is similar to that of the P-T2 system. The time response is described through Tu and Tg.

Substitute: The controlled system with many delays can be approximately substituted with the series connection of a P-T1 system with a dead time system.

The following applies: Tt » Tu and TS » Tg.

Substitute step response for the P-Tn system

 

Preface

Fundamentals

Discontinuous Action Controller Controller Block (S)FB41

Setting the System Appendix

 

 

 

 

 

 

 

T I A Training Document

Page 16 of 64

Module

 

 

 

 

B3

Issued: 02/2008

 

 

Control Engineering with STEP 7

Page 16
Image 16
Siemens Module B3 manual Proportional Controlled System with n Time Delays