Simulink Control Design™ - MathWorks

• 'tustin' — Tustin (bilinear) method


• 'prewarp' — Tustin method with frequency prewarp. When you use this method, set
  the PreWarpFreq option to the desired prewarp frequency.


• 'upsampling_zoh' — Upsample discrete states when possible, and use 'zoh'
  otherwise.


• 'upsampling_tustin' — Upsample discrete states when possible, and use
  'tustin' otherwise.


• 'upsampling_prewarp' — Upsample discrete states when possible, and use
  'prewarp' otherwise. When you use this method, set the PreWarpFreq option to the
  desired prewarp frequency.

For more information on rate conversion and linearization of multirate models, see:

• “Linearization of Multirate Models” on page 2-183


• “Linearization Using Different Rate Conversion Methods” on page 2-187


• “Continuous-Discrete Conversion Methods” (Control System Toolbox)

NoteIf you use a rate conversion method other than 'zoh', the converted states no

longer have the same physical meaning as the original states. As a result, the state names

in the resulting LTI system change to '?'.

PreWarpFreq — Prewarp frequency

0 (default) | positive scalar

Prewarp frequency in rad/s, specified as the comma-separated pair consisting of

'PreWarpFreq' and a nonnegative scalar. This option applies only when

RateConversionMethod is either 'prewarp' or 'upsampling_prewarp'.

AreParamsTunable — Flag indicating whether to recompile the model when

varying parameter values

true (default) | false

Flag indicating whether to recompile the model when varying parameter values for

linearization, specified as the comma-separated pair consisting of 'AreParamsTunable'

and one of the following:

• true — Do not recompile the model when all varying parameters are tunable. If any
  varying parameters are not tunable, recompile the model for each parameter grid
  point, and issue a warning message.

15 Alphabetical List