Dynamic Characteristics VIs
Owning Palette: Control Design VIs and Functions
Installed With: Control Design and Simulation Module. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.
Use the Dynamic Characteristics VIs to calculate properties related to the dynamics of a given system model. Dynamic characteristics include DC gain, stability, norm, root locus, and pole-zero analysis.
The VIs on this palette can return general LabVIEW error codes or specific control design error codes.
| Palette Object | Description |
|---|---|
| CD Covariance Response | Returns the covariance of the outputs and/or states when Gaussian white noise excites the input model. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |
| CD Damping Ratio and Natural Frequency | Gives the damping ratios and natural frequencies of the poles of the input system. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |
| CD DC Gain | Calculates the DC gain, or the ratio of the outputs to the inputs of a system, after all the transients decay. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |
| CD Distribute Delay | Distributes the total delay of a system into input, output, and transport delays such that the transport delays are minimal. This VI allocates the majority of the delays as input or output delays. The remaining delays become transport delays. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |
| CD Norm | Calculates the infinity-norm and 2-norm of linear time-invariant (LTI) systems. The 2-norm is infinite for unstable systems and for state-space systems whose D matrix is not equal to zero. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |
| CD Pole-Zero Map | Plots the poles and zeros of a system model on an XY graph that represents a complex plane. You can display this data in the CD Pole-Zero S Grid or CD Pole-Zero Z Grid indicator. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |
| CD Poles | Returns the model poles. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |
| CD Root Locus | Plots the Evans plot or trajectory of closed-loop poles of a single-input single-output (SISO) system as the feedback gain varies from zero to infinity. You can display this data in a root locus graph indicator. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |
| CD Stability | Determines if the input system is stable, unstable, or marginally stable. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |
| CD Total Delay | Adds all the delays between each input and output pair and returns the total time delay. The total time delay includes the input, output, and transport delays. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |
| CD Zeros | Returns the locations of the model zeros. The data type you wire to the State-Space Model input determines the polymorphic instance to use. |