Transfer function with symbol
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Hello everyone.... I'm trying to create a transfer function with a symbol like follow...
syms K
s = tf('s');
control = K*(s+1)/(s+15);
but matlab doesn't seem to like this cuz i get an error like....
??? Error using ==> sym.sym Conversion to 'sym' from 'tf' is not possible.
Error in ==> sym.mtimes at 9 B = sym(B);
any ideas?
Thanks!
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Answers (1)
Wayne King
on 17 Oct 2011
s = tf('s');
Creates an object of class tf. tf() is not an overloaded method in the Symbolic Toolbox.
Define your K as a constant.
K = 3;
cntrl = K*(s+1)/(s+15);
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