LabVIEW Control Design and Simulation Module

d_to_c (MathScript RT Module Function)

  • Updated2023-03-14
  • 1 minute(s) read

d_to_c (MathScript RT Module Function)

Owning Class: convert

Requires: Control Design and Simulation Module and MathScript RT Module

Syntax

SysCon = d_to_c(SysDis)

SysCon = d_to_c(SysDis, method)

SysCon = d_to_c(SysDis, 'prewarp', w)

Legacy Name: d2c

Description

Converts a discrete system model to a continuous model using the method you specify. Refer to the LabVIEW Control Design User Manual for information about these conversion methods.

Examples

Inputs

Name Description
SysDis Specifies a discrete model in transfer function, zero-pole-gain, or state-space form.
method Specifies the method this function uses to convert the SysDis model to the SysCon model. method is a string that can take the following values:

'zoh' (Default) Converts the model using the Zero-Order-Hold method.
'tustin' Converts the model using Tustin's method.
'prewarp' Converts the model using the Prewarp method. If you enter this option, you also must specify the prewarp frequency w as an input to this function.
w Specifies the prewarp frequency, in radians/second. The default value is 4. w is a real scalar.

Outputs

Name Description
SysCon Returns a continuous model in transfer function, zero-pole-gain, or state-space form.

Details

The following table lists the support characteristics of this function.

Supported in the LabVIEW Run-Time Engine Yes
Supported on RT targets Yes
Suitable for bounded execution times on RT Not characterized

Examples

A = [0.5, 0.25; 0, 0.1]
B = [1, 0]'
C = [-1, 0]
SysDis = ss(A, B, C, 0, 0.1)
SysCon = d_to_c(SysDis, 'prewarp', 2)

Related Topics

c_to_d
d_to_d