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Mason.m

08 Feb 2000 (Updated 12 Oct 2001)

Mason.m uses mason's rule to simplify signal flow graphs.

File Information
Description	Mason.m uses mason's rule to simplify signal flow graphs. It takes a file describing the network and produces a symbolic equation relating a dependent output node to an independent input node. The directory contains a comprehensive readme file and an example network file to experiment with. Mason's rule is traditionally used for control system analysis but has applications in microwave circuit design, filter design and many other areas.
MATLAB release	MATLAB 5.3.1 (R11.1)
Other requirements	Note: Symbolic Toolbox recommended

Comments and Ratings (11)
30 Nov 2002	Francisco Lotufo
17 Mar 2003	Josh Weaver	Impressive
15 Jan 2004	Salomon Luque
04 Mar 2005	aji devianto	ok
03 Nov 2005	Lei Pan	Very nice. Just wondering if possible to contrustruct paths automatically by readling a state-flow diagram?
16 Nov 2005	racky lee	nice!
28 Mar 2006	Ramiro Aduviri	thank you
11 Jan 2007	Kosta Grgurevic	Good
04 Mar 2008	Antonio Nanner	Simple to use, but very useful
03 Apr 2008	rami dred
02 Dec 2008	Huaichen Chen	The program is good, but too complex to understand. We developed a simple way to solve this peoblem in our new submitted file signal_flow_graphz. Where the network description file is replaced by a connection matrix Q and an input Matrix P. The simultaneous equations of the linear system are expressed in a matrix form: X=QX+PU. The solution is expressed by a simple MATLAB inversion command line: W=X/U=inv(eye(size(Q))-Q)*P Thus the calculation process is completely transparent to the user and eazier to debug or to modify. In signal_flos_graphz this command line is replaced by a function sigflow.m just for doing some check to matrices Q and P. Moreover, this method is valid to MIMO systems.

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