Simulink Control Design™ - MathWorks

Linearization of an Engine Speed Model

This example shows how to linearize an engine speed model.

Generation of Operating Points

Open the model.

scdspeed

This example generates linear models of the output engine speed and between the inputs

the Spark Advance and the Throttle Angle. The FINDOP command computes the

operating points at steady state conditions at 2000, 3000, and 4000 rpm.

Create an operating point specification object using the command

opspec = operspec('scdspeed')

Operating point specification for the Model scdspeed.

(Time-Varying Components Evaluated at time t=0)

States:

----------

(1.) scdspeed/Throttle & Manifold/Intake Manifold/p0 = 0.543 bar

spec: dx = 0, initial guess: 0.543

(2.) scdspeed/Vehicle Dynamics/w = T//J w0 = 209 rad//s

spec: dx = 0, initial guess: 209

Linearization of an Engine Speed Model