Sample time rate conversion method
Method for converting the sample time of single-rate or multirate models.
This parameter is used only when the value of Linear system sample time on page 16-
155 is not auto.
Settings
Default: Zero-Order Hold
Zero-Order Hold
Zero-order hold, where the control inputs are assumed piecewise constant over the
sampling time Ts. For more information, see “Zero-Order Hold” (Control System
Toolbox).This method usually performs better in the time domain.Tustin (bilinear)
Bilinear (Tustin) approximation without frequency prewarping. The software rounds
off fractional time delays to the nearest multiple of the sampling time. For more
information, see “Tustin Approximation” (Control System Toolbox).This method usually performs better in the frequency domain.Tustin with Prewarping
Bilinear (Tustin) approximation with frequency prewarping. Also specify the prewarp
frequency in Prewarp frequency (rad/s). For more information, see “Tustin
Approximation” (Control System Toolbox).This method usually performs better in the frequency domain. Use this method to
ensure matching at frequency region of interest.Upsampling when possible, Zero-Order Hold otherwise
Upsample a discrete-time system when possible and use Zero-Order Hold
otherwise.You can upsample only when you convert a discrete-time system to a new faster
sample time that is an integer multiple of the sample time of the original system.Upsampling when possible, Tustin otherwise
Upsample a discrete-time system when possible and use Tustin (bilinear)
otherwise.Linear Step Response Plot