Hi, Please I am new to Simulink, I need to design a controller from experimental data(input is Speed and output is differential pressure). I have a model designed using simulink blocks, now I need a controller to tune this model. Each time I try to linearize I get this error In "linearize(modelname,io)" using block substitution the block Control_plant_input_output/PID Controller cannot be substituted due to an error in the MATLAB function Speed. The error is: Undefined function 'Speed' for input arguments of type 'struct'.. Any pointer on what to do next. please help.
MATLAB: Is it possible to design a controller in simulink using experimental data only
controlpid controllerSimscapesimulationsimulinkSimulink Control Design
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Export the compensator you designed, C, to MATLAB workspace. Then in MATLAB type
C=pid(C)This will convert the compensator from a transfer function to a PID object. You can then access the gains as shown below.
I tried tuning the PID controller in the 'nmp.mdl' model that you attached and I didn't get any errors. I clicked on the 'Tune' button in the PID Controller block parameters. This opened the PID Tuner app and clicking on the 'Update block' option has successfully updated the PID controller parameters without any error. Please note that you would require a valid license for Simulink Control Design if you would like to automatically tune the PID controller using this method.
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