control.matlab.pade¶
- control.matlab.pade(T, n=1, numdeg=None)¶
Create a linear system that approximates a delay.
Return the numerator and denominator coefficients of the Pade approximation.
- Parameters
T (number) – time delay
n (positive integer) – degree of denominator of approximation
numdeg (integer, or None (the default)) – If None, numerator degree equals denominator degree If >= 0, specifies degree of numerator If < 0, numerator degree is n+numdeg
- Returns
num, den – Polynomial coefficients of the delay model, in descending powers of s.
- Return type
array
Notes
- Based on:
Algorithm 11.3.1 in Golub and van Loan, “Matrix Computation” 3rd. Ed. pp. 572-574
M. Vajta, “Some remarks on Padé-approximations”, 3rd TEMPUS-INTCOM Symposium