How to tune the PID controller for Simscape Vehicle model ?
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I am facing problem in tuning the PID controller for my simscape vehicle model. Below are the description about the model.
1.) Input is the vehicle speed setpoint from step block. I have used PI controller to convert the vehicle speed error to acceleration demand with limit 0 to 1.
2.) With a lookup table, I have converted acceleration demand to engine speed demand.
3.) Then I have used another PID controller to correct the engine speed error and limited it to 0 to 1, which is the input to the throttle.
I just need some guidance on finding out the appropriate gains for both of my controllers. I have also attached my model and .mat file for your reference. Please help me.
![Unbenannt.PNG](https://www.mathworks.com/matlabcentral/answers/uploaded_files/198519/Unbenannt.png)
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Darshil Dharod
el 12 de Mayo de 2019
Hi Arun,
I am also developing a hybrid drivetrain model in Simulink. Can you help with my following questions:
1) How do you get the engine rpm demand from the acceleration demand ? How do we get the engine rpm values for the corresponding acceleration demand value for the lookup table ?
2) I want to couple the torques from the electric motor and the ICE and deliver the summation of the 2 torques to the final driveline using a torque coupler ? Do you have any idea about how to model such a gear system ?
Any help would be much appreciated.
Thanks you in advance.
Respuestas (5)
Arvind Sathyanarayanan
el 7 de Dic. de 2018
Have you tried the PID tuner app? You will to replace your controller with the MATLAB PID Controller to use the app. You could follow the example here.
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Arun Pandian Kumaresan
el 9 de Dic. de 2018
1 comentario
Arvind Sathyanarayanan
el 11 de Dic. de 2018
Arun, it looks like you added a 20 kHz lowpass filter (20 kHz Lowpass filter 3) on your feedback which could be affecting the perfomance of your controller.
Have you tried running your model without this filter?
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