Applications of Linearization

Linearization is useful in model analysis and control design applications. After you linearize a Simulink model at a specific operating point, you can use your linear model to:

• Compute the Bode response of the Simulink model.

• Evaluate loop stability margins by computing open-loop response.

• Obtain linear state-space, transfer-function, or zero-pole-gain representation of the combined Simulink model that contains only linear blocks.

• Analyze and compare plant response near different operating points.

• Design linear controller

  Classical control system analysis and design methodologies require linear, time-invariant models. Simulink Control Design automatically linearization the plant when you tune your compensator. See PID Control Design Using Robust-Response-Time Tuning Algorithm.

• Analyze closed-loop stability.

• Measure the size of resonances in frequency response by computing closed-loop linear model for control system.

• Generate controllers with reduced sensitivity to parameter variations and modeling errors (requires Robust Control Toolbox™).

 Examples and How To

 More About

Linearization

Open-Loop Response of Control System for Stability Margin Analysis

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