传递函数的倍频指数

Question

I am trying to figure out how to use an exponential in the transform function. Normally the transform function is of the form tf(num, den) where num and den are linear polynomials. I want to transform (1-exp(-Ts)/s. I can't seem to figure out how to handle the exp(-Ts). Any ideas?

Thanks...

Answer 1

I was not able to find a specific function in Octave that handled this. However, I found an approximation that works well. I was going to use a Taylor series approximation. Taylor series uses an infinite series of rational numbers to converge on a exp(-sT). However, the Pade approximation works better and from a few papers I read this is what most people are using. Thanks for all of your help.