Custom Block Examples
Creating Custom Blocks from Masked Library Blocks
The Additional Math and Discrete Simulink library is a
group of custom blocks created by extending the functionality of built-in Simulink blocks.
The Additional
Discrete library contains a number of masked blocks that extend
the functionality of the standard Unit Delay block. See Working with Block Libraries for
more general information on Simulink libraries.
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Creating Custom Blocks from MATLAB Functions
The Simulink product provides a number of demonstrations
that show how to incorporate MATLAB functions into a custom block.
The Single Hydraulic Cylinder Simulation, sldemo_hydcyl.mdl,
uses a Fcn block to model the control valve flow. In addition, the Control
Valve Flow block is a library link to one of a number of custom
blocks in the library hydlib.mdl.
The Radar Tracking Model, sldemo_radar.mdl,
uses a MATLAB Fcn block to model an extended Kalman filter. The
M-file aero_extkalman.m implements
the Kalman filter found inside the Radar
Kalman Filter subsystem. In this example, the M-file requires
three inputs, which are bundled together using a Mux block in the Simulink model.
The Spiral Galaxy Formation demonstration, sldemo_eml_galaxy.mdl,
uses several Embedded MATLAB Function blocks to construct two
galaxy and calculate the effects of gravity as these two galaxies
nearly collide. The demo also uses Embedded MATLAB Function blocks
to plot the simulation results using a subset of MATLAB functions
not supported for code generation. However, because these Embedded MATLAB Function
blocks have no outputs, the Real-Time Workshop product optimizes
them away during code generation.
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Creating Custom Blocks from S-Functions
The Simulink model sfundemos.mdl contains
various examples of M-file and C MEX-file S-functions. For more information
on writing M-file S-functions, see Writing S-Functions in M.
For more information on writing C MEX S-functions, see Writing S-Functions in C.
For a list of available S-function demos, see S-Function Examples in
Writing S-Functions.
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 | Tutorial: Creating a Custom Block | | Using the Embedded MATLAB Function Block |  |
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