Simulink Frequency Response Estimation

Obtain frequency response data from Simulink models using simulation-based estimation (frestimate) when analytical linearization is not viable or as a validation tool.

When to Use

• Model contains hard discontinuities (PWM, switching, relay, quantizer) that linearize to zero or NaN
• Validating a linear model against a simulation based linearization of a Simulink model
• Estimating frequency response directly from simulation data

When NOT to Use

• Model linearizes cleanly with linearize — use simulink-linearize instead
• Working with measured data only (no Simulink model) — use System Identification Toolbox

Workflow