SI Model Simulation VI

Owning Palette: Model Validation VIs

Requires: Advanced Signal Processing Toolkit or Control Design and Simulation Module

Simulates the response of a system model to an input signal. Wire data to the stimulus signal and noise inputs to determine the polymorphic instance to use or manually select the instance.

Note  For ARX (MIMO), state-space, transfer function, and zero-pole-gain models, this VI does not return std deviation of the simulated response. For AR models, this VI ignores stimulus signal.

Examples

SI Model Simulation (SISO Waveform)

	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. Note  You can use a customized system model probe to view model information that flows through system model wires when you debug a block diagram created with the System Identification VIs. Right-click a system model wire and select Custom Probe»SI System Model from the shortcut menu to use the system model probe.
	stimulus signal specifies the input waveform of the stimulus signal.
	noise is the waveform of the noise you want to apply to the system.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	response returns the simulated response waveform of the system.
	std deviation returns the standard deviation of the simulated system response. Each element is the standard deviation of the corresponding value in response.
	error out contains error information. This output provides standard error out functionality.

SI Model Simulation (SISO Array)

	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. Note  You can use a customized system model probe to view model information that flows through system model wires when you debug a block diagram created with the System Identification VIs. Right-click a system model wire and select Custom Probe»SI System Model from the shortcut menu to use the system model probe.
	stimulus signal specifies an array that represents the stimulus signal.
	noise is the array of noise you want to apply to the system.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	sampling rate (Hz) specifies the sampling rate of the input signals. sampling rate must equal the sampling rate used to estimate the system model.
	response returns the simulated response output of the system.
	std deviation returns the standard deviations of the simulated system response. Each element of std deviation is the standard deviation of the corresponding value in response.
	error out contains error information. This output provides standard error out functionality.

SI Model Simulation (MISO Waveform)

	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. Note  You can use a customized system model probe to view model information that flows through system model wires when you debug a block diagram created with the System Identification VIs. Right-click a system model wire and select Custom Probe»SI System Model from the shortcut menu to use the system model probe.
	stimulus signals specifies the input waveform array of the stimulus signals. Each element of the array is the waveform of one stimulus signal.
	noise is the waveform of the noise you want to apply to the system.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	response returns the simulated response waveform of the system.
	std deviation returns the standard deviation of the simulated system response. Each element is the standard deviation of the corresponding value in response.
	error out contains error information. This output provides standard error out functionality.

SI Model Simulation (MISO Array)

	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. Note  You can use a customized system model probe to view model information that flows through system model wires when you debug a block diagram created with the System Identification VIs. Right-click a system model wire and select Custom Probe»SI System Model from the shortcut menu to use the system model probe.
	stimulus signals specifies an array that represents the stimulus signals. Each row in the array is one stimulus signal.
	noise is the array of noise you want to apply to the system.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	sampling rate (Hz) specifies the sampling rate of the input signals. sampling rate must equal the sampling rate used to estimate the system model.
	response returns the simulated response output of the system.
	std deviation returns the standard deviations of the simulated system response. Each element of std deviation is the standard deviation of the corresponding value in response.
	error out contains error information. This output provides standard error out functionality.

SI Model Simulation (MIMO Waveform)

	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. Note  You can use a customized system model probe to view model information that flows through system model wires when you debug a block diagram created with the System Identification VIs. Right-click a system model wire and select Custom Probe»SI System Model from the shortcut menu to use the system model probe.
	stimulus signals specifies the input waveform array of the stimulus signals. Each element of the array is the waveform of one stimulus signal.
	noises is the waveform array of the noises you want to apply to the system. Each element of the waveform array is the waveform of one noise.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	responses returns the simulated response waveform array of the system. Each element of the waveform array is the waveform of one simulated response.
	std deviations returns the standard deviations of the simulated system responses. Each element of std deviations is the standard deviation of the corresponding value in responses.
	error out contains error information. This output provides standard error out functionality.

SI Model Simulation (MIMO Array)

	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. Note  You can use a customized system model probe to view model information that flows through system model wires when you debug a block diagram created with the System Identification VIs. Right-click a system model wire and select Custom Probe»SI System Model from the shortcut menu to use the system model probe.
	stimulus signals specifies an array that represents the stimulus signals. Each row in the array is one stimulus signal.
	noises is the array of noises you want to apply to the system. Each row in the array is one noise.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	sampling rate (Hz) specifies the sampling rate of the input signals. sampling rate must equal the sampling rate used to estimate the system model.
	responses returns the simulated response array of the system. Each row in the array is one response.
	std deviations returns the standard deviations of the simulated system responses. Each element of std deviations is the standard deviation of the corresponding value in responses.
	error out contains error information. This output provides standard error out functionality.

Examples

Refer to the following VIs for examples of using the SI Model Simulation VI:

• Model Simulation VI: labview\examples\System Identification\Getting Started\General.llb
• Belt-driven Motion System (Greybox) VI: labview\examples\System Identification\Industry Applications\Mechanical Systems.llb