temperature control using fuzzy logic

[riki35]

Hello I am building a temperature control system using Fuzzy PID, I am building a self tuning PID gains by a fuzzy logic algorithm, but the problem I know the rules for the parameters of PID but dn't know the approximate range in membership of each output . does any one have a small example jst to explain or help me determine the values knowing that I dn't have a real transfer function of the heater

[Rscd27]

Hello, Can you give more informationa about the software you are using? Are you using the fuzzy logic toolkit?

[riki35]

thank you so much for replying ,yes I'm using the fuzzy logic toolkit

I'm trying to control the temperature of a heater(1st order system), using the fuzzy logic in labview to tune the PID parameters (kp,ki and kd) I know the rules to be used but I could not determine the member ship functions ranges. knowing that I will send the output of the fuzzy logic by the opc server to the PID of the PLC siemens s7 300 . if u can give me some advice or small example how ti tune a basic example that will be nice

again thanx for ur help 🙂

[lucaso3]

Hi riki35,

I hope you are having a great day. I was reviewing your question and I gather several links that might help you obtain valuable information to accomplish what you would like to obtain. These links are the following:

https://www.ni.com/docs/en-US/bundle/labview-pid-and-fuzzy-logic-toolkit-api-ref/page/lvpidmain/crea... 

https://www.ni.com/docs/en-US/bundle/labview-pid-and-fuzzy-logic-toolkit-api-ref/page/lvpidmain/defu... 

https://www.ni.com/docs/en-US/bundle/372192d/resource/372192d.pdf 

https://forums.ni.com/t5/Student-Projects/Load-Frequency-Control-in-Power-System-Analysis/ta-p/35309... 

I really hope you can find the information valuable.

Luis C.

Applications Engineer.

[riki35]

hi lucaso3 , hope you are doing well

really I thank you for your help and thank you for taking time to search things for me

I  will see the links you have posted

I 'll do my best to achieve this project. when I finish the project (hope so) I'll post how I did with details for the other users 😉

again thanx for your reply