Step response of linear dynamic systems can be obtained by using either transfer function approach or by using state-space approach.
The transfer function is represented by a ratio of two polynomials. Consider a transfer function given as
This system can be represented by two arrays, say n and d representing numerator and denominator respectively, each containing the coefficients of the polynomials in decreasing powers of s:
|n = [81 4]||and||d = [1 6 81]|
To make the dimensions of numerator n and denominator d same, ‘0’ may be added in numerator array. Thus, the ...