Справочник Пользователя для Siemens Module B3

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Automation and Drives - SCE 
 
 
 
 
T I A  Training Document 
Page 15 of 64 
  Module 
 
 
2.5.3 Proportional Controlled System with Two Time Delays 
 
 
The controlled system is called P-T2 system for short. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure: Jump Response of the P-T2 system 
 
Tu: Delay time Tg:  Transition time 
 
The system consists of the reaction-free series connection of two P-T1 systems that have the time 
constants TS1 and TS2. 
 
Controllability of P-Tn systems: 
 
Can still be 
controlled 
Difficult to contro
Easy to 
control 
 
 
 
 
 
 
With the rising ratio Tu/Tg, controlling the system becomes more and more difficult. 
 
Preface     Fundamentals     Discontinuous Action Controller     Controller Block (S)FB41     Setting the System     Appendix 
B3 
Issued: 02/2008                                                                                                                                     Control Engineering with STEP 7