What is Block Diagram?
A system consists of number of components. The function of each component is represented by a block. All the blocks are interconnected by the lines with arrows indicating the flow of signal from output of onw block to another. These block diagram gives the idea of the system and the interrelation of various components of the system.
Different parts of Block Diagram
There some parts that are used to show different functions in a block diagram. These are:-
- Functional Block: This symbol represents the transfer function G(s) of a system.
- Summing Point: This is the point where different output signal from previous block or different signals of the system are added to form a single signal
- Take off point: It is tapping point in the system where the desired signal is tapped off to be utilized elsewhere in the diagram.
Conversion of Block Diagrams into Signal Flow Graphs
In this article, we will discuss the method of converting the block diagram into a signal flow graph in a control system. We will first discuss about signal flow graph and its terminologies. We also discuss the construction of signal flow graphs from linear equations. We will then discuss about block diagram and its components. We will then discuss the steps for conversion and then see an example. We will discuss the Mason gain formula and its example. Later in the article, we will discuss the advantages, disadvantages, and applications of this method.
Table of Content
- What is a signal flow graph?
- Construction of Signal Flow Graph from linear equation
- What is Block Diagram?
- Steps to draw signal flow graph from block diagram
- Mason’s Gain Formula
- Solved Example
- Application