Simulink Control Design™ - MathWorks

About Operating Points

What Is an Operating Point?

An operating point of a dynamic system defines the states and root-level input signals of

the model at a specific time. For example, in a car engine model, variables such as engine

speed, throttle angle, engine temperature, and surrounding atmospheric conditions

typically describe the operating point.

The following Simulink model has an operating point that consists of two variables:

• A root-level input signal set to 1


• An Integrator block state set to 5

The following table summarizes the signal values for the model at this operating point.

Block Block Input Block Operation Block Output

Integrator 1 Integrate input 5 , set by the initial

conditionx0 = 5

Square 5 , set by the initial

condition of the

Integrator block

Square input 25

Sum 25 from Square

block, 1 from

Constant block

Sum inputs 26

Gain 26 Multiply input by 3 78

The following block diagram shows how the model input and the initial state of the

Integrator block propagate through the model during simulation.

About Operating Points