sos_to_zpk (MathScript RT Module Function)
Owning Class: linear systems
Requires: MathScript RT Module
Syntax
[z, p, k] = sos_to_zpk(s)
[z, p, k] = sos_to_zpk(s, g)
Legacy Name: sos2zp
Description
Converts a second-order section system to zero-pole-gain representation.
Inputs
| Name | Description |
|---|---|
| s | Specifies a second-order section system. s is an L-by-6 matrix. Each row of s contains the coefficients of one section as [b0 b1 b2 1 a1 a2]. |
| g | Specifies the gain of the system. The default is 1. |
Outputs
| Name | Description |
|---|---|
| z | Returns the zeros of the system. z is a vector. |
| p | Returns the poles of the system. p is a vector. |
| k | Returns the gain of the system. k is a real number. |
Examples
[z, p, k] = sos_to_zpk([1 1 1 1 2 1; 1 2 1 1 1 1])