SI Convert to Models of CDT VI
Owning Palette: Model Conversion VIs
Installed With: System Identification Toolkit
Converts a model you created in the LabVIEW System Identification Toolkit into a transfer function, zero-pole-gain, or state-space model that you can use with the LabVIEW Control Design and Simulation Module. You must manually select the polymorphic instance to use.
Use the pull-down menu to select an instance of this VI.
Place on the block diagram | Find on the Functions palette |
SI Convert to Models of CDT (MIMO SS)
realization type specifies the type of state-space realization to use.
| |||||||||||||
system model contains information about the model structure, nominal or estimated parameters, identification result, and so on. Use the Model Management VIs to retrieve the information system model contains.
| |||||||||||||
measured only? specifies whether to apply the noise stimulus of the model system to the linear, time-invariant (LTI) system of the Control Design and Simulation Module. By default, the state-space model that the Control Design and Simulation Module uses does not include the disturbance e(t) of the system. However, the models estimated by the System Identification Toolkit include e(t). If measured only? is TRUE, this VI ignores e(t) in the conversion. If measured only? is FALSE, this VI treats e(t) as an input of the system. | |||||||||||||
error in describes error conditions that occur before this VI or function runs.
The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
| |||||||||||||
tolerance determines zero-pole cancellations. If the difference between the location of a pole and a zero is within the tolerance, this VI removes the zero-pole pair. | |||||||||||||
state-space model returns the state-space representation of the system model.
| |||||||||||||
error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces.
Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
|
SI Convert to Models of CDT (MIMO TF)
realization type specifies the type of state-space realization to use.
| |||||||||||
system model contains information about the model structure, nominal or estimated parameters, identification result, and so on. Use the Model Management VIs to retrieve the information system model contains.
| |||||||||||
measured only? specifies whether to compute the transfer function between the noise and outputs of the system. If measured only? is TRUE, this VI computes only the transfer function between the stimulus signals and response signals. If measured only? is FALSE, this VI computes the transfer function between the stimulus signals and the response signals as well as the transfer function between the noise and the response signals. | |||||||||||
error in describes error conditions that occur before this VI or function runs.
The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
| |||||||||||
tolerance determines zero-pole cancellations. If the difference between the location of a pole and a zero is within the tolerance, this VI removes the zero-pole pair. | |||||||||||
transfer function model returns the transfer function representation of the system model.
| |||||||||||
error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces.
Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
|
SI Convert to Models of CDT (MIMO ZPK)
realization type specifies the type of state-space realization to use.
| |||||||||||||
system model contains information about the model structure, nominal or estimated parameters, identification result, and so on. Use the Model Management VIs to retrieve the information system model contains.
| |||||||||||||
measured only? specifies how the VI treats the disturbance term of the input system model. If measured only? is TRUE, this VI ignores the disturbance term and converts the transfer function between the stimulus and the response. If measured only? is FALSE, this VI treats the disturbance term as part of the input and converts the transfer function between the noise and the response. | |||||||||||||
error in describes error conditions that occur before this VI or function runs.
The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
| |||||||||||||
tolerance determines zero-pole cancellations. If the difference between the location of a pole and a zero is within the tolerance, this VI removes the zero-pole pair. | |||||||||||||
zero-pole-gain model returns the zero-pole-gain representation(s) of the system model.
| |||||||||||||
error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces.
Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
|
Example
Refer to the Model Conversion VI in the labview\examples\System Identification\Getting Started\General.llb for an example of using the SI Convert to Models of CDT VI.