Solved Problems on Block Diagram Reduction
Reduce the following block diagram using the block diagram reduction rule
Solution :
Step 1 : G1 and G2 are connected in parallel , find its equivalent block G1 + G2
Step 2 : Elimination of summing point before G1 + G2 having negative feedback H1 in closed loop system.
Step 3 : Move summing point after G4 to before G4.
Step 4 : Exchange the position of both the summing point before G4
Step 5 : G3 /G4 and (G1 +G2) / (1+G1H1+G2H2) both blocks are connected in parallel . Find equivalent block .
Step 6 : Eliminate summing point before G4 having negative feedback in closed loop system.
Step 7 : Find the equivalent of both the cascaded block .
Single block diagram representation as shown below.
Block Diagram Reduction Rules
As we know a complex control system is difficult to analyze as various factors are associated with it. In this article, we will see how to easily analyze a control system, and it is only possible by using block diagram reduction rules. This representation of a system involves summing points, functional blocks, etc., connected through branches which makes the analysis easy, simple, and step by step, crystal clear.
We will start our Article with Methods of Block Diagram Reduction Rules, and Then we will go through all the rules of Block Reduction, At last, we will Solve a Problem block diagram reduction technique.
Table of Content
- Rules
- Disadvantages
- Applications
- Conclusion
- Solved Problems
- FAQs
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