A Fully Automated Flowgraph Analysis Tool for MATLAB

A handy signal flow graph analysis tool for exploring transfer function(s) of a given system.

Description

A tool for generating one or several transfer functions for a given system. Applicable for both continuous- and discrete-time systems. System can also be purely symbolic.

This is a tool for generating transfer function information with ease. It is based on a nodelist presentation of a system which makes the exploring of the transfer function information less prone for errors.

The tool reads a user-defined textual nodelist which defines the signal flow graph of a system and then generates the needed transfer function(s).

The tool is generic so that it is easily applicable for many purposes. Tool can be applied to digital filter design, circuit design, delta-sigma modulator analysis or even reflection analysis s-parameter measurements in RF techniques and in optics.

The package includes 10 examples of nodelist files and some of them are presented in the manual. It also includes a useful extension: a parameter solving tool for e.g. filter design.

Requires Matlab 6 or higher and optionally control system toolbox (the tool has an optional output for an LTI-model).

• Acknowledgements: This submission has inspired the following:; Flow Graph Analysis Tool Gui
• Required Products: Control System Toolbox; Symbolic Math Toolbox
• MATLAB release: MATLAB 7.0.1 (R14SP1)
• Other requirements: Matlab 6 or higher. Control System Toolbox is optional but for some examples in the zipped file it is required.

[Maciej Borkowski]

Well done. It saves a lot of time, especially when you experiment with different topologies. Thank you!

[Mikko Loikkanen]

Very useful tool for everyone working with signal flow graphs. Only thing really missing is the ability to simplify complex analysis results.

[Eslam Abdel Razek Mohammed]

yes its good for me

[Marko Neitola]

I made a GUI front-end for this tool. See the link in the acknowledgements-section.

[Eric]

Thank you, Marko! I haven't tried it yet, but this kind of tool is definitely useful!