Owning Palette: State-Space Model Analysis VIs
Installed With: Control Design and Simulation Module
Calculates a Balanced State-Space Model based on Grammians. The resulting balanced transformation has identical controllability and observability diagonal Grammians.
This VI returns the similarity Transformation Matrix that this VI uses in transforming the given system. This VI renames the names of the states using the default names after the transformation.
 Place on the block diagram | Find on the Functions palette |
 | State-Space Model contains a mathematical representation of and information about a system that this VI transforms. | ||||||
 | 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.
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 | Balanced Model returns the model that results from applying the Transformation Matrix (T) to the State-Space Model. | ||||||
 | Transformation Matrix (T) returns the matrix T that this VI uses to transform the system. The calculation of T is based on the Cholesky decomposition of the Grammians of the original system. | ||||||
 | Diagonal of Grammian returns the resulting observability and controllability Grammians of the Balanced 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.
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CD Balance State-Space Model (Grammians) Details
This VI does not support delays unless the delays are part of the mathematical model that represents the dynamic system. To account for the delays in the synthesis of the controller, you must incorporate the delays into the mathematical model of the dynamic system using the CD Convert Delay with Pade Approximation VI (continuous models) or the CD Convert Delay to Poles at Origin VI (discrete models). Refer to the LabVIEW Control Design User Manual for more information about delays and the limitations of Pade Approximation.