What is the basic rules for block diagram reduction technique?
Rule 1 − Check for the blocks connected in series and simplify. Rule 2 − Check for the blocks connected in parallel and simplify. Rule 3 − Check for the blocks connected in feedback loop and simplify. Rule 4 − If there is difficulty with take-off point while simplifying, shift it towards right.
What is block diagram reduction?
A pictorial representation of the functions performed by each component and of the flow of signals. Block diagram. A pictorial representation of the functions performed by each component and of the flow of signals.
What is the rule to move a take-off point after a block in block diagram reduction?
Shifting of take-off point behind the block In order to move the take-off point behind the block, we need to keep the value of ‘p’ same. Here p = X(s)G(s).
What is the rule for moving the summing point before the block?
Rule 5: Shifting of a Summing Point before a block C(s) = [R +(X/G) ] G = GR + X which is same as output in the first case. Hence to shift a summing point before a block, we need o to add another block of transfer function ‘1/G’ before the summing point as shown in figure.
What are the advantages of block diagram reduction technique?
Very simple to construct block diagram for a complicated system Function of individual element can be visualized Individual & Overall performance can be studied Over all transfer function can be calculated easily.
How do you explain the block diagram?
A block diagram is a graphical representation of a system – it provides a functional view of a system. Block diagrams give us a better understanding of a system’s functions and help create interconnections within it. Block diagrams derive their name from the rectangular elements found in this type of diagram.
What is electrical block diagram?
Block Diagram – A block diagram shows the major components of electrical or mechanical interrelations in block, or square or rectangular, form. The lines between the blocks represent the connections between the systems or components.
Why is block diagram Reduction important?
It is a nice way to visualize the interrelationships of various components. They will be crucial in helping us identify manipulated and controlled variables and input(s) and output(s) of a system.
What is summing point?
The summing point is represented with a circle having cross (X) inside it. It has two or more inputs and single output. It produces the algebraic sum of the inputs. It also performs the summation or subtraction or combination of summation and subtraction of the inputs based on the polarity of the inputs.
Why do we need block diagram?
Why are block diagrams important? A block diagram is an essential method used to develop and describe hardware or software systems as well as represent their workflows and processes. Block diagrams are used in electronics to represent systems and their shifting e.g. mechatronic systems in the trucking industry.
What are the rules for reducing a block diagram?
However, while reducing the block diagram it is to be kept in mind that the output of the system must not be altered and the feedback should not be disturbed. So, to reduce the block diagram, proper logic must be used. Hence for the reduction of a complicated block diagram into a simple one, a certain set of rules must be applied.
How to reduce the size of a block?
Step 1 − Use Rule 1 for blocks G 1 and G 2. Use Rule 2 for blocks G 3 and G 4. The modified block diagram is shown in the following figure. Step 2 − Use Rule 3 for blocks G 1 G 2 and H 1. Use Rule 4 for shifting take-off point after the block G 5. The modified block diagram is shown in the following figure.
How are two blocks connected in a block diagram?
In the following figure, two blocks having transfer functions G 1 ( s) and G 2 ( s) are connected in parallel. The outputs of these two blocks are connected to the summing point. Compare this equation with the standard form of the output equation, Y ( s) = G ( s) X ( s). Where, G ( s) = G 1 ( s) + G 2 ( s).
Can a complex diagram be reduced to a simple form?
So, such a complex diagram must be reduced to its simple or canonical form. However, while reducing the block diagram it is to be kept in mind that the output of the system must not be altered and the feedback should not be disturbed.