SIM Linearize VI

Simulation VI and Function

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SIM Linearize VI

Owning Palette: Trim & Linearize VIs

Installed With: Control Design and Simulation Module

Returns a linear time-invariant (LTI) system model given a nonlinear simulation subsystem. Linearizing a nonlinear simulation subsystem involves approximating the behavior of that subsystem around an operating point. The operating point consists of the Inputs and States of the subsystem. The data type you wire to the Path input determines the polymorphic instance to use.

Note  You can use this VI to linearize only a continuous subsystem.

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

 Place on the block diagram  Find on the Functions palette

SIM Linearize (Path)

Path specifies the path to the simulation subsystem on which you want to operate.
States specifies the initial states of the simulation subsystem. The SIM Linearize VI uses the initial subsystem states to calculate the operating point. You can specify the value of these states using the SIM Set Parameter Value VI.
Name specifies the name of the parameter.
Value specifies the value of the parameter.
Static Input? is TRUE if the parameter type Static. The SIM Linearize VI excludes Static inputs and outputs from the linear time-invariant (LTI) model. Static Input? is FALSE if the parameter type is either Variable or Fixed.
Vector? is TRUE if the parameter value is a vector or an array. Vector? is FALSE if the parameter value is a scalar.
Fixed Size? is TRUE if you can replace this parameter only with a vector or an array of the same size. Fixed Size? is FALSE if you can replace this parameter with a vector or array of any size.
Fixed Value? is TRUE if the parameter value is a condition that you specify for trimming a subsystem. Fixed Value? is FALSE if the parameter value is not a condition that you specify for trimming a subsystem.
Inputs specifies the initial inputs of the simulation subsystem. The SIM Linearize VI uses the initial subsystem inputs to calculate the operating point. You specify the inputs to include in the LTI model and the value of these inputs using the SIM Set Parameter Value VI.
Name specifies the name of the parameter.
Value specifies the value of the parameter.
Static Input? is TRUE if the parameter type Static. The SIM Linearize VI excludes Static inputs and outputs from the linear time-invariant (LTI) model. Static Input? is FALSE if the parameter type is either Variable or Fixed.
Vector? is TRUE if the parameter value is a vector or an array. Vector? is FALSE if the parameter value is a scalar.
Fixed Size? is TRUE if you can replace this parameter only with a vector or an array of the same size. Fixed Size? is FALSE if you can replace this parameter with a vector or array of any size.
Fixed Value? is TRUE if the parameter value is a condition that you specify for trimming a subsystem. Fixed Value? is FALSE if the parameter value is not a condition that you specify for trimming a subsystem.
Outputs specifies the outputs to include in the LTI model. You can exclude outputs from the LTI model using the SIM Set Parameter Value VI.
Name specifies the name of the parameter.
Value specifies the value of the parameter.
Static Input? is TRUE if the parameter type Static. The SIM Linearize VI excludes Static inputs and outputs from the linear time-invariant (LTI) model. Static Input? is FALSE if the parameter type is either Variable or Fixed.
Vector? is TRUE if the parameter value is a vector or an array. Vector? is FALSE if the parameter value is a scalar.
Fixed Size? is TRUE if you can replace this parameter only with a vector or an array of the same size. Fixed Size? is FALSE if you can replace this parameter with a vector or array of any size.
Fixed Value? is TRUE if the parameter value is a condition that you specify for trimming a subsystem. Fixed Value? is FALSE if the parameter value is not a condition that you specify for trimming a subsystem.
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 exception control to treat what is normally an error as no error or to treat a warning as an error. 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.
State-Space Model returns the LTI state-space form of the given simulation subsystem. This model is compatible with the Control Design VIs and functions.
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.

SIM Linearize (Reference)

Reference specifies a reference to the subsystem on which you want to operate.
States specifies the initial states of the simulation subsystem. The SIM Linearize VI uses the initial subsystem states to calculate the operating point. You can specify the value of these states using the SIM Set Parameter Value VI.
Name specifies the name of the parameter.
Value specifies the value of the parameter.
Static Input? is TRUE if the parameter type Static. The SIM Linearize VI excludes Static inputs and outputs from the linear time-invariant (LTI) model. Static Input? is FALSE if the parameter type is either Variable or Fixed.
Vector? is TRUE if the parameter value is a vector or an array. Vector? is FALSE if the parameter value is a scalar.
Fixed Size? is TRUE if you can replace this parameter only with a vector or an array of the same size. Fixed Size? is FALSE if you can replace this parameter with a vector or array of any size.
Fixed Value? is TRUE if the parameter value is a condition that you specify for trimming a subsystem. Fixed Value? is FALSE if the parameter value is not a condition that you specify for trimming a subsystem.
Inputs specifies the initial inputs of the simulation subsystem. The SIM Linearize VI uses the initial subsystem inputs to calculate the operating point. You specify the inputs to include in the LTI model and the value of these inputs using the SIM Set Parameter Value VI.
Name specifies the name of the parameter.
Value specifies the value of the parameter.
Static Input? is TRUE if the parameter type Static. The SIM Linearize VI excludes Static inputs and outputs from the linear time-invariant (LTI) model. Static Input? is FALSE if the parameter type is either Variable or Fixed.
Vector? is TRUE if the parameter value is a vector or an array. Vector? is FALSE if the parameter value is a scalar.
Fixed Size? is TRUE if you can replace this parameter only with a vector or an array of the same size. Fixed Size? is FALSE if you can replace this parameter with a vector or array of any size.
Fixed Value? is TRUE if the parameter value is a condition that you specify for trimming a subsystem. Fixed Value? is FALSE if the parameter value is not a condition that you specify for trimming a subsystem.
Outputs specifies the outputs to include in the LTI model. You can exclude outputs from the LTI model using the SIM Set Parameter Value VI.
Name specifies the name of the parameter.
Value specifies the value of the parameter.
Static Input? is TRUE if the parameter type Static. The SIM Linearize VI excludes Static inputs and outputs from the linear time-invariant (LTI) model. Static Input? is FALSE if the parameter type is either Variable or Fixed.
Vector? is TRUE if the parameter value is a vector or an array. Vector? is FALSE if the parameter value is a scalar.
Fixed Size? is TRUE if you can replace this parameter only with a vector or an array of the same size. Fixed Size? is FALSE if you can replace this parameter with a vector or array of any size.
Fixed Value? is TRUE if the parameter value is a condition that you specify for trimming a subsystem. Fixed Value? is FALSE if the parameter value is not a condition that you specify for trimming a subsystem.
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 exception control to treat what is normally an error as no error or to treat a warning as an error. 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.
State-Space Model returns the LTI state-space form of the given simulation subsystem. This model is compatible with the Control Design VIs and functions.
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.
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