Simulink Control Design™ - MathWorks

As shown in the following figure, when zero-crossing detection is enabled, the

variable-step Simulink solver simulates the model at the time, Ttrig, when the trigger

signal is detected. Ttrig may lie between the simulation time steps Tn-1 and Tn which

are automatically chosen by the solver.

Computes linear system

characteristics at this time point

Time

Amplitude

1

0

Tn-1 Ttrig Tn

Trigger signal

For more information on zero-crossing detection, see “Zero-Crossing Detection”

(Simulink) in the Simulink User Guide.

Settings

Default: On

On

Compute linear system characteristics at the exact snapshot time or exact time when

a trigger signal is detected.

This setting is ignored if the Simulink solver is fixed step.

Off

Compute linear system characteristics at the simulation time steps that the variable-

step solver chooses. The software may not compute the linear system at the exact

snapshot time or exact time when a trigger signal is detected.

Command-Line Information

Parameter: ZeroCross

Type: character vector

Value: 'on' | 'off'

Default: 'on'

See Also

Plot Linear Characteristics of Simulink Models During Simulation on page 2-82

16 Blocks — Alphabetical List