Implement Blocks with System Objects

Use a System object™ in Simulink^® using MATLAB System blocks

MATLAB System block uses a System object to implement MATLAB^® algorithms in Simulink. Before you begin using a MATLAB System block, you must have a System object to associate with a block. A System object is a special kind of MATLAB class and they are designed specifically for the implementation and simulation of dynamic systems. For information on implementing and authoring system objects, see Create System Objects.

Blocks

MATLAB System

Include System object in model

Topics

Create Custom Blocks Using MATLAB System Block and System objects

Implement your own algorithms using System objects.
- STEP 1: Define System Object for Use in Simulink
- STEP 2: Customize MATLAB System Block Appearance
- STEP 3: Customize MATLAB System Block Dialog
- STEP 4: Specify Output Characteristics of MATLAB System Block
- STEP 5: Specify Sample Time for MATLAB System Block System Objects
- STEP 6: Create Moving Average Filter Block with System Object
Mapping System Object Code to MATLAB System Block Dialog Box
The System object source code controls the appearance of the block dialog box.
Share Data Between MATLAB System Block and Other Blocks
Share data between MATLAB System and other blocks using the global keyword and the Data Store Memory block or Simulink.Signal object.
Call Simulink Functions from MATLAB System Block
Learn to call a Simulink function from a MATLAB System block.
Call Python Function Using MATLAB Function and MATLAB System Block
This example shows how to call a Python® function in Simulink® that sorts random numbers using a Python® sorting function and two different blocks: the MATLAB Function block and MATLAB System block.

Troubleshooting

Troubleshoot System Objects in Simulink

Use these guidelines to troubleshoot System objects in Simulink.

Related Information

System Objects

Featured Examples

Integrate Python GPS Text Message Parsing Algorithms in Simulink

Parse text messages in NMEA GPS format using Simulink® string blocks and Python®. NMEA sentences are used for communication between marine devices, and the model in the example decodes RMB and RMC sentences in NMEA. RMB is the sentence for the recommended navigation data for GPS. RMC is the sentence for the recommended minimum data for GPS sentences.

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Convert MATLAB Algorithms of Dynamic Systems into a Simulink Model

Convert MATLAB® code that models a dynamic system using System objects into a Simulink® model. This example maps the dynamic system components defined in MATLAB onto a Simulink block diagram using blocks with similar functionality. Transforming MATLAB code to a Simulink model enhances your modeling experience by allowing you to create a block diagram of the system, simulate the model, visualize the results via graphs and animation, log data, verify and validate, and generate code.

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