Lecture 10 Structural schemes of stationary linear systems Plan

Lecture 10
Structural schemes of stationary linear systems
Plan:

1. 
   Structural schemes of stationary linear systems.
   
2. 
   Structural changing principles.
   

Here you can see some connection methods of elementar links.
We have 3 basic methods to build ACS:

1. 
   In series
   
2. 
   Parallel
   
3. 
   Parallel-meeting
   

1. 
   In seies- this is a connection in which the output value of previous link is considered to be the
   

input signal of the next link

10.1 Picture . In series connection of links

2. 
   Parallel connection. This is such connection that the input signal X(t) is general for all links.
   

10.2-picture . Parallel connection of links

3. 
   Parallel-meeting. This is a connection which has both positive and negative communications.
   

10.3 – picture. Parallel-meeting connection.
If there is positive reversive communication, we have to define complex transfer coefficient:
Then


Here «-» - positive feedback communication;
«+» - negative feedback communication.