Poles and zeros from FRF

1. How do you find the poles and zeros of a transfer function in Matlab?
2. Which are poles and which are zeros?

How do you find the poles and zeros of a transfer function in Matlab?

First convert the poles and zeros to transfer function form, then call fvtool . Click the Pole/Zero Plot toolbar button, select Analysis > Pole/Zero Plot from the menu, or type the following code to see the plot. To use zplane for a system in transfer function form, supply row vector arguments.

Which are poles and which are zeros?

A value of s s that causes the a transfer function to be 0 is called a zero, and a value of s s that causes the transfer function to be infinite is called a pole.