Creating and Manipulating Models

Retrieving Information About Delays

There are several ways to retrieve time delay information from a given LTI model sys:

• Use property display commands to inspect the values of the ioDelay, InputDelay, and OutputDelay properties. For example,

•   sys.iodelay
    get(sys,'inputdelay')
  

• Use the helper function hasdelay to determine if sys has any delay at all. The syntax is

•   hasdelay(sys)
  

• which returns 1 (true) if sys has any delay, and 0 (false) otherwise

• Use the function totaldelay to determine the total delay between each input and each output (cumulative contribution of the ioDelay, InputDelay, and OutputDelay properties). Type help totaldelay or see the Reference pages for details.

Specifying Delays in Discrete-Time Models

Padé Approximation of Time Delays