National Instruments 370753C-01 Manual De Usuario

(s + 1) (s + 0.79s + 0.16)

initial integrator outputs

0

0

0

0

Input Names

-----------

Input 1 

Output Names

------------

Output 1 

System is continuous

G2

 matches the system 

G

 where residues were computed in Example 4-4.

When modeling a dynamic system and trying to determine its response to 
the input values it is likely to receive in use, you generally will want to 
simulate system behavior with more general input signals than the zero or 
step inputs used in 

initial( )

, 

impulse( )

, and 

step( )

. To do this, 

use the 

*

 operator between a dynamic system object and a PDM containing 

the input data you want to use in the simulation. 

Borrowing from the standard frequency response notation for a system 
where:

Xmath defines the operation system*PDM as a time domain simulation. 
Thus for any dynamic system 

Sys

 (continuous or discrete) and for a PDM 

u representing the external stimulus as a function of time, the operation 
y =

Sys

× u creates a PDM y which contains the outputs of the system as 

a function of time.

For a dynamic system with n

 outputs and n

 inputs, the input vector is 

defined to be n

× 1 and the output vector is n

× 1. Thus the input PDM 

u should be m

× 1 × p, where p is the number of time points in u.

( )

( ) u s

( )

×

=