When to Enable Zero-Crossing Detection
Whether or not to enable zero-crossing detection on state transitions
can be a trade-off between accuracy and performance. Generally when
detecting zero crossings, a Simulink model accurately simulates
mode changes without unduly reducing step size. However, for systems
that exhibit chattering — frequent fluctuations
between two modes of continuous operation — enabling zero-crossing
detection may impact simulation time. Chattering requires a Simulink model
to check for zero crossings in rapid succession, resulting in excessively
small step sizes which can slow simulation. In these situations, you
can disable zero-crossing detection, choose a different zero-crossing
detection algorithm for your chart, or modify parameters that control
the frequency of zero crossings in your Simulink model. See Preventing Excessive Zero Crossings in the Simulink User's
Guide.
 | Configuring a Stateflow Chart to Update in Continuous-Time | | Defining Continuous-Time Variables |  |
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