Using blkbuild with symbolic functions to find the transfer function of a block diagram
13 views (last 30 days)
Show older comments
In the block diagram represented by the following code blocks 1 to 7 are defined as x, where x is a symbolic variable. When the code is executed I get a number of error messages although if n1 through n7 were numeric and not symbolic variables there would be no error. Can someone please explain how the blocks can be expressed as symbolic functions?
syms x
n1 = x; d1 = 1;
n2 = x; d2 = 1;
n3 = x; d3 = 1;
n4 = x; d4 = 1;
n5 = x; d5 = 1;
n6 = x; d6 = 1;
n7 = x; d7 = 1;
nblocks = 7;
blkbuild
q = [1 0 0 0 0; 2 1 -5 0 0; 3 2 -6 0 0; 4 2 -6 3 -7; ...
5 3 0 0 0; 6 3 0 0 0; 7 4 0 0 0]
input = 1; output = 4;
[aa,bb,cc,dd] = connect(a,b,c,d,q,input,output)
[num,den] = ss2tf(aa,bb,cc,dd)
printsys(num,den)
0 Comments
Answers (0)
See Also
Categories
Find more on Symbolic Math Toolbox in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!