Block Diagram Reduction Technique

Block Diagram

A block diagram is the representation of the system’s composition and interconnection. It simply shows how the system’s components are interconnected. In general block diagram can be used to model linear as well as non-linear systems. Because of their simplicity and versatility block diagrams are often used by control engineers to model all types of systems.


Basic elements of a Block Diagram


Block

Summing point


Takeoff point



Block Diagram Reduction Technique

 

Rule :-1   Combining Block in series 

             

Equivalent diagram    

                    

Rule :-2   Combining block in parallel

 Equivalent Diagram
    

Rule :-3   Shifting the summing element after the block


Equivalent diagram

Rule :-4   Shifting the summing element before the block

Equivalent diagram
                      

Rule :-5   Shifting the take off point after the block

Equivalent Diagram

Rule : -6   Shifting the take off point before the block

Equivalent Diagram

Rule :-7   Shifting take off point after the summing element

Equivalent Diagram

Rule :-8   Shifting the take off point before the summing element


Equivalent Diagram









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