Simulink Control Design™ - MathWorks

Definitions

Complementary Sensitivity Function

The complementary sensitivity function at a point is the transfer function from an additive

disturbance at the point to a measurement at the same point. In contrast to the sensitivity

function, the disturbance is added after the measurement.

To compute the complementary sensitivity function at an analysis point, x, the software

adds a linearization output at x, followed by a linearization input, dx. The complementary

sensitivity function is the transfer function from dx to x.

Analysis Point in Simulink

Model

How

getCompSensitivity

Interprets Analysis Point

Complementary

Sensitivity Function

x

dx

x

Transfer function from dx to

x

For example, consider the following model where you compute the complementary

sensitivity function at y:

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