When linearizing a model containing PWM signals there are two effects of linearization
you should consider:
- The signal level at the operating point is one of the discrete values within the PWM
signal, not the DC signal value. For example, in the model above, the signal level is
either 0 or 1, not 0.8. This change in operating point affects the linearized model. - The creation of the PWM signal within the subsystem Voltage to PWM, shown in the
next figure, uses the Compare To Zero block. Such comparator blocks do not linearize
well due to their discontinuities and the nondouble outputs.
See Also
More About
- “Specifying Custom Linearizations for Simulink Blocks” on page 2-167
- “Specifying Linearization for Model Components Using System Identification” on
page 2-209
See Also