filt (Control Design and Simulation Module, MathScript Function)
Member of the cdutil class.
Syntax
SysOutTF = filt(K)
SysOutTF = filt(num, den)
SysOutTF = filt(num, den, Ts)
Description
Converts a digital filter to a discrete transfer function system model. You also can use this function to create a transfer function model from a gain matrix K.
Inputs
| Name | Description |
| K | Specifies the gain matrix. K is a real matrix. |
| num | Specifies the coefficients, in descending order, of the numerator polynomial function of the digital filter. num is a real vector. |
| den | Specifies the coefficients, in descending order, of the denominator polynomial function of the digital filter. den is a real vector. |
| Ts | Specifies the sampling time of the discrete transfer function model this function creates. The default value is 1. Ts is a real scalar. |
Outputs
| Name | Description |
| SysOutTF | Returns a discrete linear time-invariant (LTI) transfer function model that has a sampling time of Ts. |
Examples
num = [1, 1]den = [1, -1, 3]
Ts = 0.2
SysOutTF= filt(num, den, Ts)