You can then use this option set with linearize or slLinearizer.
Change Linearization Rate Conversion Method
When you linearize models with multiple sample times, such as a discrete controller with
a continuous plant, the software uses a rate conversion algorithm to create a single-rate
linear model. The default rate conversion method is zero-order hold.
To specify the rate conversion method in the Linear Analysis Tool:
1
On the Linear Analysis tab, click More Options.
(^2) In the Options for exact linearization dialog box, on the Linearization tab, in the
Choose rate conversion method drop-down list, select one of the following rate
conversion methods.
Rate Conversion Method When to Use
Zero-Order Hold You need exact discretization of
continuous dynamics in the time
domain for staircase inputs.
Tustin You need good frequency-domain
matching between a continuous-time
system and the corresponding
discretized system, or between an
original system and a resampled
system.
Tustin with Prewarping You need good frequency-domain
matching at a particular frequency
between a continuous-time system and
the corresponding discretized system,
or between an original system and the
resampled system.
Linearize Multirate Models