Recent content by relaxc

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    Is there a method that can be used for very large number of operating points to design PID controller ?

    Thank for your explanations of your work. It is impressive how you GUI manage all these PID parameters and FF. For you, a video shows how we can control an inverted pendum+card with its comissioning with only one parameter. You should try Relaxc controller on your nonlinear test cases...
  2. R

    Is there a method that can be used for very large number of operating points to design PID controller ?

    yes I agree with you, you describe the method well, but I was answering the question how to map kp=fct(Y), Ti=fct(Y) Td=fct(Y) with Y= variable of the process, easily, without spending hours on it. If it is the process time constant that changes in the operational range then we must then...
  3. R

    Is there a method that can be used for very large number of operating points to design PID controller ?

    Yes, To help to make your lookup table you have a free PiDtuner here with relaxc feedback that you can apply at each operating point #Relaxctuner http://relaxc.appedge.com/ and with only 2 two parameters you get the coefficient of your PID
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    PID or Not PID! Relaxc ? (Expert control, unity pro)

    Hi, I propose a free trial version of new methodology of process control under expert control of schneider. If you are a school or an industrial, you can test it and compare it to your controllers. Inside the package you have the practical guide of relaxc that allows to control quickly all your...
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    pH Neutralization Process - Obtaining transfer function

    I have an idea if you use expert control of schneider and relaxc. Because in this case it is not necessary to compute the transfer function. https://www.researchgate.net/publication/335813259_relaxc_sum_up for other information ask me
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    Simple Examples of Open Loop and Closed Loop Control

    If it is not too late You can take this documentation as a reference in closed loop control. You have inside 'almost' all the types of process. https://www.researchgate.net/publication/339843536_Practical_tuning_of_Relaxc or send me request to get it directly. Try your methods of control on...
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    Humidity Control

    If i understand all, To put a filter on the setpoint if it is possible to that with your device.
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    Help with liquid level control system

    If it is not too late. Your paper give the coefficients of Skogestad ( SIMC), and he does not use exactly the structure of a classic PID. Theta is the delay and you have choose tauc=theta. and if theta=0 then SIMC does not work well. and finally SIMC work "well" ( relaxc better) when the...
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