totaldelay (Control System Toolbox)

Return the total combined I/O delays for an LTI model

Syntax

```
td = totaldelay(sys)
```

Description

td = totaldelay(sys) returns the total combined I/O delays for an LTI model sys. The matrix td combines contributions from the InputDelay, OutputDelay, and ioDelay properties, (see set on page 11-192 or type ltiprops for details on these properties).

Delays are expressed in seconds for continuous-time models, and as integer multiples of the sample period for discrete-time models. To obtain the delay times in seconds, multiply td by the sample time sys.Ts.

Example

sys = tf(1,[1 0]);  % TF of 1/s
sys.inputd = 2;                       % 2 sec input delay
sys.outputd = 1.5;                    % 1.5 sec output delay
td = totaldelay(sys)
td =
    3.5000

The resulting I/O map is

This is equivalent to assigning an I/O delay of 3.5 seconds to the original model sys.

See Also
delay2z Change transfer functions of discrete-time LTI models with delays to rational functions or absorbs FRD delays into the frequency response phase information

hasdelay True for LTI models with delays

tfdata zero