SI Model Prediction VI
Owning Palette: Model Validation VIs
Installed With: System Identification Toolkit
Performs k-step-ahead model prediction on a system model. Wire data to the stimulus signal and response signal inputs to determine the polymorphic instance to use or manually select the instance.
 | Note This VI does not support the transfer function or zero-pole-gain models. For AR models, this VI ignores stimulus signal. |
Use the pull-down menu to select an instance of this VI.
 Place on the block diagram | Find on the Functions palette |
SI Model Prediction (SISO Waveform)
 | prediction step specifies the prediction interval. The step-ahead prediction response is estimated by the known stimulus and response data up to the time you estimate the response. If prediction step is less than 0, this VI performs the model simulation without containing a disturbance. You cannot set prediction step to 0. | ||||||
 | 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.
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 | stimulus signal specifies the input waveform of the stimulus signal. | ||||||
| response signal specifies the input waveform of the response signal. | ||||||
 | 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.
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 | predicted response returns the predicted response waveform of the system. | ||||||
 | MSE returns the mean square error (MSE) between response signal and predicted response. | ||||||
 | 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.
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SI Model Prediction (SISO Array)
| prediction step specifies the prediction interval. The step-ahead prediction response is estimated by the known stimulus and response data up to the time you estimate the response. If prediction step is less than 0, this VI performs the model simulation without containing a disturbance. You cannot set prediction step to 0. | ||||||
| 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.
| ||||||
 | stimulus signal specifies the input array of the stimulus signal. | ||||||
| response signal specifies the input array of the response signal. | ||||||
| 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.
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 | sampling rate specifies the sampling rate of the input signals. sampling rate must equal the sampling rate used to estimate the system model. | ||||||
 | predicted response returns the predicted response output of the system. | ||||||
| MSE returns the mean square error (MSE) between response signal and predicted response. | ||||||
| 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.
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SI Model Prediction (MISO Waveform)
| prediction step specifies the prediction interval. The step-ahead prediction response is estimated by the known stimulus and response data up to the time you estimate the response. If prediction step is less than 0, this VI performs the model simulation without containing a disturbance. You cannot set prediction step to 0. | ||||||
| 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.
| ||||||
 | stimulus signals specifies the input waveform array of the stimulus signals. Each element of the array is the waveform of one stimulus signal. | ||||||
| response signal specifies the input waveform of the response signal. | ||||||
| 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.
| ||||||
| predicted response returns the predicted response waveform of the system. | ||||||
| MSE returns the mean square error (MSE) between response signal and predicted response. | ||||||
| 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 Model Prediction (MISO Array)
| prediction step specifies the prediction interval. The step-ahead prediction response is estimated by the known stimulus and response data up to the time you estimate the response. If prediction step is less than 0, this VI performs the model simulation without containing a disturbance. You cannot set prediction step to 0. | ||||||
| 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.
| ||||||
 | stimulus signals specifies the input array of the stimulus signals. Each row in the array is one stimulus signal. | ||||||
| response signal specifies the input array of the response signal. | ||||||
| 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.
| ||||||
| sampling rate specifies the sampling rate of the input signals. sampling rate must equal the sampling rate used to estimate the system model. | ||||||
| predicted response returns the predicted response output of the system. | ||||||
| MSE returns the mean square error (MSE) between response signal and predicted response. | ||||||
| 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 Model Prediction (MIMO Waveform)
| prediction step specifies the prediction interval. The step-ahead prediction response is estimated by the known stimulus and response data up to the time you estimate the response. If prediction step is less than 0, this VI performs the model simulation without containing a disturbance. You cannot set prediction step to 0. | ||||||
| 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.
| ||||||
| stimulus signals specifies the input waveform array of the stimulus signals. Each element of the array is the waveform of one stimulus signal. | ||||||
| response signals specifies the input waveform array of the response signals. Each element of the array is the waveform of one response signal. | ||||||
| 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.
| ||||||
 | predicted responses returns the predicted response waveform array of the system. Each element of the waveform array is the waveform of one response signal. | ||||||
| MSEs returns the mean square errors (MSEs) between response signals and predicted responses. Each element of the array is the mean square error of one output. | ||||||
| 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 Model Prediction (MIMO Array)
| prediction step specifies the prediction interval. The step-ahead prediction response is estimated by the known stimulus and response data up to the time you estimate the response. If prediction step is less than 0, this VI performs the model simulation without containing a disturbance. You cannot set prediction step to 0. | ||||||
| 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.
| ||||||
| stimulus signals specifies the input array of the stimulus signals. Each row in the array is one stimulus signal. | ||||||
| response signals specifies the input array of the response signals. Each row in the array is one response signal. | ||||||
| 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.
| ||||||
| sampling rate specifies the sampling rate of the input signals. sampling rate must equal the sampling rate used to estimate the system model. | ||||||
 | predicted responses returns the predicted response array of the system. Each row in the array is the output of one response signal. | ||||||
| MSEs returns the mean square errors (MSEs) between response signals and predicted responses. Each element of the array is the mean square error of one output. | ||||||
| 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.
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Examples
Refer to the following VIs for examples of using the SI Model Prediction VI:
- Model Prediction VI: labview\examples\System Identification\Getting Started\General.llb Open example Browse related examples
- Flexible Arm VI: labview\examples\System Identification\Industry Applications\Mechanical Systems.llb Open example Browse related examples
- Four-Stage Evaporator VI: labview\examples\System Identification\Industry Applications\Process Industry Systems.llb Open example Browse related examples