Steps to Draw Signal Flow Graph from Block Diagram
We need to follow the steps given below to convert block diagram into signal flow graph.
- Replace the input and output signal by nodes.
- Replace all the summing points by nodes.
- Replace all taking off points by nodes.
- If the branch connecting a summing point and take off point can be combined then it is represented by a single node.
- If there are more takeoff points from the same signal then all the take off points can be combined and represented by a single node.
- If the gain of the link connecting two summing points is one then the two summing points can be combined and replaced by a single node.
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