Linearize Simulink Model at Model Operating Point
If you do not specify an operating point when linearizing a Simulink model, the software
uses the operating point specified in the model by default. The model operating point
consists of the initial state and input signal values stored in the model.For information on linearizing models at different operating points, see “Linearize at
Trimmed Operating Point” on page 2-90 and “Linearize at Simulation Snapshot” on page
2-96.Linearize Simulink Model Using Linear Analysis Tool
This example shows how to linearize a Simulink model at the operating point specified in
the model using the Linear Analysis Tool.Open Simulink model.mdl = 'watertank';
open_system(mdl)The Water-Tank System block represents the plant in this control system and includes all
of the system nonlinearities.In the Simulink window, specify the portion of the model to linearize:(^1) To specify the linearization input, right-click the output signal of the PID Controller
block, and select Linear Analysis Points > Input Perturbation.
2 Linearization