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Generate Structured Text for Fuzzy System Using Simulink PLC Coder

This example uses:

Open Live Script

You can generate Structured Text for a Fuzzy Logic Controller block using Simulink® PLC Coder™. For more information on generating Structured Text, seeCode Generation(Simulink PLC Coder).

While this example generates Structured Text for a type-1 Sugeno fuzzy inference system, the workflow also applies to Mamdani and type-2 fuzzy systems.

By default, the Fuzzy Logic Controller block uses double-precision data for simulation and code generation. ThefuzzyPIDmodel is configured to use double-precision data. You can also use either single-precision or fixed-point data. For more information on configuring your fuzzy inference system for code generation, seeFuzzy Logic Controller.

mdl ='fuzzyPID'; open_system(mdl)

It is good practice to validate the performance of the system in Simulink before generating code. Run the simulation.

sim(mdl) open_system([mdl'/Output'])

Close output plot.

close_system ([mdl'/Output'])

To generate Structured Text for the model, use theplcgeneratecode(Simulink PLC Coder)function, which generates code for anatomic subsystemin a model. To generate code for the Fuzzy PID controller, configure the subsystem as an atomic subsystem by selecting theTreat as atomic unitparameter for the subsystem.

subsys = [mdl'/Fuzzy PID']; set_param(subsys,'TreatAsAtomicUnit','on')

When generating code for just a Fuzzy Logic Controller block, place the block inside a subsystem, and set theTreat as atomic unitparameter of that subsystem.

To generate Structured Text for the Fuzzy PID subsystem, uncomment this line.

plcgeneratecode(subsys);
### Generating PLC code for 'fuzzyPID/Fuzzy PID'. ### Using model settings from 'fuzzyPID' for PLC code generation parameters. ### Begin code generation for IDE codesys23. ### Emit PLC code to file. ### Creating PLC code generation report fuzzyPID_codegen_rpt.html. ### PLC code generation successful for 'fuzzyPID/Fuzzy PID'. ### Generated files: plcsrc/fuzzyPID.exp

By default, the software saves the generated code in the following location.

plcsrc/fuzzy_PID.exp

See Also

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