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  • Last update: 5 years ago
  • Total downloads: 47
  • Operating system: Linux, Mac OS X, Win All, BSD, Solaris
  • Publisher: Carlos Mario Velez Sanchez
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scripts default iconRouth's array in symbolic way (Scripts) Publisher's description

This function gives the Routh's array from a numerical or SYMBOLIC polynomial and includes two special cases

[M L] = routh_hurwitz(P,N)
This function gives the Routh's array from a numerical or SYMBOLIC polynomial and includes two special cases: (1) the first element of the row is zero; (b) a row of zeros.

P Numerical or symbolic array of coeficients. In the case of symbolic variables it is necesarry to define them as: >> syms a b c ...
N Digits to be considered zero a number. E.g, for N=5, 10^(-5) is considered a zero. By default, N=10
M Routh's array without any simplification (e.g., with epsilon notation)
L Simplified first column of Routh's array with simplification (e.g., using the limit when epsilon tends to zero) that determines the number of roots in the right-half of the s-plane: the number of changes of signs in L

1. [M, L]=routh_hurwitz([1 0 2 3 4])
2. syms a b c d K; [M, L]=routh_hurwitz([1 b c d+a*K])
3. syms k; [M, L]=routh_hurwitz([1 k 1 1])
4. [M, L]=routh_hurwitz([1 -3 -15 -9 -58 12 72])
5. syms a; [M, L]=routh_hurwitz([1 0 2 3 a])

System Requirements:

MATLAB 7.11 (2010b)
Program Release Status: New Release
Program Install Support: Install and Uninstall

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