RJM's Demo of Finding Transfer Functions
This page allows the user to see how transfer functions are formed, using the Forward divided by 1-Loop(s) rule.
You can select one of various systems, and then see how Forward, Loop(s) and then the overall Transfer Functions are derived.
Here the systems are static, but please click
here
to see some dynamic systems, such as electronic filters and motors.
Click on the relevant blocks in the diagram to change their parameters.
Systems to Select
 
  Control System: O/I
 
  Control System: O/D
 
  General Feedback : O/I
 
  General Feedback O/D
 
  Control + Vel Fb: O/I
 
  Control + Vel Fb: O/D
 
  FeedForward Control: O/I
 
  FeedForward Control: O/D
 
  Full Control: O/I
 
  Full Control: O/D
 
  Potential Divider V/E
 
  Potential Divider V/IL
 
  OpAmp NonInverting
 
  OpAmp Virtual Earth
  
© Dr Richard Mitchell, Jan 2015
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