Block diagram reduction problems - solved step by step

1. Block Diagram Reduction
Problems
- Ameya P. Nijasure
napradeep@mes.ac.in
Do visit Block Diagram Reduction rules (.ppt)

2. Problem 01
Simplify the following block Diagram
& determine closed loop transfer
function

3. Problem 01
STEP 01STEP 01 Rule 02: Blocks in Parallel

4. Problem 01
STEP 02
Rule 01 : Blocks in series

5. Problem 01
STEP 03
Rule 03 : Moving Summing point after the block

6. Problem 01
STEP 04
Rule 01 : Blocks in series

7. Problem 01
STEP 05
Interchanging summing points as there is
no transfer function between two.
NOTE : Sign change in G4H2 & H1H2 according to the flow

8. Problem 01
STEP 06
Rule 07: Eliminating feedback loop
Consider Forward loop t.f - Unity

9. Problem 01
STEP 07
Rule 01 : Blocks in series

10. Problem 01
STEP 08
Simplified Block Diagram

11. Problem 02

12. Problem 01
STEP 01STEP 01
Rule 06: Moving takeoff point
before the block

13. Problem 01
STEP 02 Rule 02: Blocks in Parallel

14. Problem 01
STEP 03 Rule 01: Blocks in Series

15. Problem 01
STEP 04
Rule 05: Moving takeoff point
after the block

16. Problem 01
STEP 05
Rule 07: Eliminating feedback loop

17. Problem 01
STEP 06
Rule 07: Eliminating feedback loop

18. Problem 01
STEP 07
Rule 07: Eliminating feedback loop
1
Consider Feedback loop t.f - Unity

19. Problem 01
STEP 08
Simplified Block Diagram

20. Thank you….!!
- Ameya P. Nijasure
napradeep@mes.ac.in