Operating Points

Find model operating point from specification (trimming) or simulation time, initialize model at operating point

An operating point of a dynamic system specifies the initial states and root-level input signals of the model at a particular time. You can find operating points using command-line tools or the Linear Analysis Tool. For more information about operating points, see About Operating Points and Computing Steady-State Operating Points.


operpoint Create operating point for Simulink model
findop Steady-state operating point from specifications (trimming) or simulation
findopOptions Set options for finding operating points from specifications
operspec Operating point specifications
initopspec Initialize operating point specification values
addoutputspec Add output specification to operating point specification
update Update operating point object with structural changes in model
getinputstruct Input structure from operating point
getstatestruct State structure from operating point


Trigger-Based Operating Point Snapshot Generate operating points, linearizations, or both at triggered events


Steady-State Operating Points

About Operating Points

An operating point of a dynamic system defines the states and root-level input signals of the model at a specific time.

Computing Steady-State Operating Points

To obtain a steady-state operating point, you can trim your model using numerical optimization techniques or simulate your model until it reaches a steady-state condition.

Handling Blocks with Internal State Representation

The operating point object used for linearization and control design does not include Simulink® blocks with internal state representation, such as Memory and Transport Delay blocks.

View and Modify Operating Points

You can view and modify operating point values at the command line and using the Linear Analysis Tool.

Find Operating Points

Compute Steady-State Operating Points from State Specifications

Find a steady-state operating point that meets your state specifications. You can fix states at known equilibrium values or constrain states within a specified range of values.

Compute Steady-State Operating Point to Meet Output Specification

Find a steady-state operating point that meets your output specifications. You can fix outputs at known equilibrium values or constrain outputs within a specified range of values.

Import and Export Specifications For Operating Point Search

When you modify an operating point specification in the Linear Analysis Tool, you can export the specification to the MATLAB® Workspace or the Linear Analysis Tool Workspace.

Change Operating Point Search Optimization Settings

You can control the accuracy of your operating point search by using different optimization methods.

Initialize Steady-State Operating Point Search Using Simulation Snapshot

If you know the approximate time when the model reaches the neighborhood of a steady-state operating point, you can use simulation to get state values to use as the initial conditions for numerical optimization.

Compute Operating Points at Simulation Snapshots

Simulate your model and find an operating point that consists of the state values and model input levels at a specified simulation snapshot time.

Compute Steady-State Operating Points for Simscape Multibody Models

To ensure a consistent Simscape™ Multibody™ machine, the steady-state operating point search must satisfy the physical constraints of the model.

Simulink Model Synchronization

Synchronize Simulink Model Changes with Operating Point Specifications

Modifying your Simulink model can change, add, or remove states, inputs, or outputs, which changes the operating point.

Simulate Simulink Model at Specific Operating Point

You can derive your Simulink model initial conditions from your computed operating point.

Batch Computation

Batch Compute Steady-State Operating Points Reusing Generated MATLAB Code

Generate code for linearization and modify the script to batch linearize your model.

Batch Compute Steady-State Operating Points for Parameter Variation

Vary model parameters and batch trim your model to find corresponding operating points.

Batch Compute Steady-State Operating Points for Multiple Specifications

Find operating points for multiple operating point specifications using a single model compilation

Code Generation

Generate MATLAB Code for Operating Point Configuration

You can generate a MATLAB script to programmatically reproduce an operating point search result that you obtained interactively.

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