SI Create Partially Known State-Space Model VI

System Identification VIs

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SI Create Partially Known State-Space Model VI

Owning Palette: Partially Known Model Estimation VIs

Installed With: System Identification Toolkit

Creates a state-space model for a partially known system. Use the SI Estimate Partially Known State-Space Model VI to estimate the model you create with this VI. You must manually select the polymorphic instance to use.

Example

Use the pull-down menu to select an instance of this VI.

 Place on the block diagram  Find on the Functions palette

SI Create Partially Known State-Space Model (Continuous SISO)

symbolic K specifies the symbolic representation of the Kalman gain. If symbolic K is not provided, the estimated state-space model contains only the deterministic part of the system.
symbolic state-space specifies the matrices of a state-space model in symbolic representation.
symbolic A is the symbolic representation of the system matrix that describes the dynamics of the states of the system.
symbolic B is the symbolic representation of the input matrix that relates the inputs to the states of the system.
symbolic C is the symbolic representation of the output matrix that relates the outputs to the states of the system.
symbolic D is the symbolic representation of the transmission matrix that relates the inputs to the outputs of the system.
variables specifies the names and values of the variables in the state-space model.
name is a name this VI uses to define the variable of the system model. Variable names can be a combination of letters and numbers. A variable name that begins with a capital letter E can produce unpredictable errors if parts of the original string represent numbers like 1E–2. Avoid variable names beginning with E in such cases.
initial guess is the initial guess of the numeric value this VI associates with the variable.
upper limit specifies the upper limit to use to search for the optimal value of each variable. The default is Inf.
lower limit specifies the lower limit to use to search for the optimal value of each variable. The default is -Inf.
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.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
symbolic initial state is the symbolic representation of the initial state.
system model out returns information about the model structure, nominal or estimated parameters, identification result, and so on.
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.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

SI Create Partially Known State-Space Model (Continuous MISO)

symbolic K specifies the symbolic representation of the Kalman gain. If symbolic K is not provided, the estimated state-space model contains only the deterministic part of the system.
symbolic state-space specifies the matrices of a state-space model in symbolic representation.
symbolic A is the symbolic representation of the system matrix that describes the dynamics of the states of the system.
symbolic B is the symbolic representation of the input matrix that relates the inputs to the states of the system.
symbolic C is the symbolic representation of the output matrix that relates the outputs to the states of the system.
symbolic D is the symbolic representation of the transmission matrix that relates the inputs to the outputs of the system.
variables specifies the names and values of the variables in the state-space model.
name is a name this VI uses to define the variable of the system model. Variable names can be a combination of letters and numbers. A variable name that begins with a capital letter E can produce unpredictable errors if parts of the original string represent numbers like 1E–2. Avoid variable names beginning with E in such cases.
initial guess is the initial guess of the numeric value this VI associates with the variable.
upper limit specifies the upper limit to use to search for the optimal value of each variable. The default is Inf.
lower limit specifies the lower limit to use to search for the optimal value of each variable. The default is -Inf.
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.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
symbolic initial state is the symbolic representation of the initial state.
system model out returns information about the model structure, nominal or estimated parameters, identification result, and so on.
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.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

SI Create Partially Known State-Space Model (Continuous MIMO)

symbolic K is the symbolic representation of the Kalman gain. If symbolic K is not provided, the estimated state-space model contains only the deterministic part of the system.
symbolic state-space specifies the matrices of a state-space model in symbolic representation.
symbolic A is the symbolic representation of the system matrix that describes the dynamics of the states of the system.
symbolic B is the symbolic representation of the input matrix that relates the inputs to the states of the system.
symbolic C is the symbolic representation of the output matrix that relates the outputs to the states of the system.
symbolic D is the symbolic representation of the transmission matrix that relates the inputs to the outputs of the system.
variables specifies the names and values of the variables in the state-space model.
name is a name this VI uses to define the variable of the system model. Variable names can be a combination of letters and numbers. A variable name that begins with a capital letter E can produce unpredictable errors if parts of the original string represent numbers like 1E–2. Avoid variable names beginning with E in such cases.
initial guess is the initial guess of the numeric value this VI associates with the variable.
upper limit specifies the upper limit to use to search for the optimal value of each variable. The default is Inf.
lower limit specifies the lower limit to use to search for the optimal value of each variable. The default is -Inf.
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.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
symbolic initial state is the symbolic representation of the initial state.
system model out returns information about the model structure, nominal or estimated parameters, identification result, and so on.
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.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

SI Create Partially Known State-Space Model (Discrete SISO)

symbolic K specifies the symbolic representation of the Kalman gain. If symbolic K is not provided, the estimated state-space model contains only the deterministic part of the system.
symbolic state-space specifies the matrices of a state-space model in symbolic representation.
symbolic A is the symbolic representation of the system matrix that describes the dynamics of the states of the system.
symbolic B is the symbolic representation of the input matrix that relates the inputs to the states of the system.
symbolic C is the symbolic representation of the output matrix that relates the outputs to the states of the system.
symbolic D is the symbolic representation of the transmission matrix that relates the inputs to the outputs of the system.
variables specifies the names and values of the variables in the state-space model.
name is a name this VI uses to define the variable of the system model. Variable names can be a combination of letters and numbers. A variable name that begins with a capital letter E can produce unpredictable errors if parts of the original string represent numbers like 1E–2. Avoid variable names beginning with E in such cases.
initial guess is the initial guess of the numeric value this VI associates with the variable.
upper limit specifies the upper limit to use to search for the optimal value of each variable. The default is Inf.
lower limit specifies the lower limit to use to search for the optimal value of each variable. The default is -Inf.
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.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
sampling rate is the signal sampling rate in hertz. The value of sampling rate must be greater than 0.
symbolic initial state is the symbolic representation of the initial state.
system model out returns information about the model structure, nominal or estimated parameters, identification result, and so on.
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.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

SI Create Partially Known State-Space Model (Discrete MISO)

symbolic K specifies the symbolic representation of the Kalman gain. If symbolic K is not provided, the estimated state-space model contains only the deterministic part of the system.
symbolic state-space specifies the matrices of a state-space model in symbolic representation.
symbolic A is the symbolic representation of the system matrix that describes the dynamics of the states of the system.
symbolic B is the symbolic representation of the input matrix that relates the inputs to the states of the system.
symbolic C is the symbolic representation of the output matrix that relates the outputs to the states of the system.
symbolic D is the symbolic representation of the transmission matrix that relates the inputs to the outputs of the system.
variables specifies the names and values of the variables in the state-space model.
name is a name this VI uses to define the variable of the system model. Variable names can be a combination of letters and numbers. A variable name that begins with a capital letter E can produce unpredictable errors if parts of the original string represent numbers like 1E–2. Avoid variable names beginning with E in such cases.
initial guess is the initial guess of the numeric value this VI associates with the variable.
upper limit specifies the upper limit to use to search for the optimal value of each variable. The default is Inf.
lower limit specifies the lower limit to use to search for the optimal value of each variable. The default is -Inf.
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.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
sampling rate is the signal sampling rate in hertz. The value of sampling rate must be greater than 0.
symbolic initial state is the symbolic representation of the initial state.
system model out returns information about the model structure, nominal or estimated parameters, identification result, and so on.
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.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

SI Create Partially Known State-Space Model (Discrete MIMO)

symbolic K is the symbolic representation of the Kalman gain. If symbolic K is not provided, the estimated state-space model contains only the deterministic part of the system.
symbolic state-space specifies the matrices of a state-space model in symbolic representation.
symbolic A is the symbolic representation of the system matrix that describes the dynamics of the states of the system.
symbolic B is the symbolic representation of the input matrix that relates the inputs to the states of the system.
symbolic C is the symbolic representation of the output matrix that relates the outputs to the states of the system.
symbolic D is the symbolic representation of the transmission matrix that relates the inputs to the outputs of the system.
variables specifies the names and values of the variables in the state-space model.
name is a name this VI uses to define the variable of the system model. Variable names can be a combination of letters and numbers. A variable name that begins with a capital letter E can produce unpredictable errors if parts of the original string represent numbers like 1E–2. Avoid variable names beginning with E in such cases.
initial guess is the initial guess of the numeric value this VI associates with the variable.
upper limit specifies the upper limit to use to search for the optimal value of each variable. The default is Inf.
lower limit specifies the lower limit to use to search for the optimal value of each variable. The default is -Inf.
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.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
sampling rate is the signal sampling rate in hertz. The value of sampling rate must be greater than 0.
symbolic initial state is the symbolic representation of the initial state.
system model out returns information about the model structure, nominal or estimated parameters, identification result, and so on.
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.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

Example

Refer to the Continuous State-Space Model of an RLC Circuit VI in the labview\examples\System Identification\Getting Started\Grey-Box Model.llb for an example of using the SI Create Partially Known State-Space Model VI.

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