For linear parametric models, you can perform the following operations:
Transform between continuous-time and discrete-time representation.
Transform between linear model representations, such as between polynomial, state-space, and zero-pole representations.
Extract numerical data from transfer functions, pole-zero models, and state-space matrices.
For nonlinear black-box models (idnlarx and idnlhwobjects), you can compute a linear approximation of the nonlinear model. See Linear Approximation of Nonlinear Black-Box Models.
System Identification Toolbox™ models in the MATLAB® workspace are immediately available to other MathWorks® products. However, if you used the System Identification Tool GUI to estimate models, you must first export the models to the MATLAB workspace.
If you have the Control System Toolbox™ software installed, you can import your linear plant model for control-system design. For more information, see Using Identified Models for Control Design Applications.
Finally, if you have Simulink® software installed, you can exchange data between the System Identification Toolbox software and the Simulink environment. For more information, see Simulating Identified Model Output in Simulink.