MATLAB SIMULINK 7 - DEVELOPING S-FUNCTIONS Betriebsanweisung PDF herunterladen (Seite 9)

Introduction

1-3

Figure 1-1: The Relationship Between an S-Function Block, Its Dialog Box,

and the Source File That Defines the Block’s Behavior

In this example, the model contains two instances of an S-Function block. Both

blocks reference the same source file (

mysfun, which can be either a C MEX-file

or an M-file). If both a C MEX-file and an M-file exist with the same name, the

C MEX-file takes precedence and is the file that the S-function uses.

You can use Simulink’s masking facility to create custom dialog boxes and

icons for your S-Function blocks. Masked dialog boxes can make it easier to

specify additional parameters for S-functions. For discussions of additional

parameters and masking, see Using Simulink.

A model that includes

two S-Function blocks

S-Function dialog box

S-Function1 dialog box

S-function

source file

* MYSFUN

/* The follo

#define S_FU

function[sys

% mysfun M-file

switch(flag)

C MEX-file

M-file

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MATLAB SIMULINK 7 - DEVELOPING S-FUNCTIONS Betriebsanweisung Seite 9