MATLAB SIMULINK 7 - DEVELOPING S-FUNCTIONS Guide de l'utilisateur télécharger pdf (Page 11)

Introduction

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blocks with no states, x is an empty vector. In MEX-file S-functions, there are

two separate state vectors for the continuous and discrete states.

Simulation Stages and S-Function Routines

Simulink makes repeated calls during specific stages of simulation to each

block in the model, directing it to perform tasks such as computing its outputs,

updating its discrete states, or computing its derivatives. Additional calls are

made at the beginning and end of a simulation to perform initialization and

termination tasks.

The figure below illustrates how Simulink performs a simulation. First,

Simulink initializes the model; this includes initializing each block, including

S-functions. Then Simulink enters the simulation loop, where each pass

through the loop is referred to as a simulation step. During each simulation

step, Simulink executes your S-function block. This continues until the

simulation is complete:

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MATLAB SIMULINK 7 - DEVELOPING S-FUNCTIONS Guide de l'utilisateur Page 11