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Hello all,

after studying some documents and doing some practicals i could able to write a code of autotuning.

I am using Relay feedback approach for autotuning. Everything is clear but only one ...

Thanks all for your reply. I will test PID practically and then comes ther if still face any problem

Hello John

I am using PIC16 with CCS compiler.

But till now i dont have C code for PID. Before clearing all concepts of PID how can i write a code for PID.

After completely understanding the ...

I think now i am clear.

When temp reaches set point, the P only controller comes into action. So o/p of PID becomes kp(S-P). Here by changing different values of kp, the controller changes its o/p ...

Also how many hit and trial the controller have to applied on value of kp and in what factor it increase it.

And how kp relates to o/p voltage. What is the relationship b/w changing kp and voltage ...

Thanks Ttelmah for your explanation.

Could you please explain it in terms of voltage applied to heater and change in temperature. And when temp reaches set point, what the code will do to compute v ...

I have read somewhere that for Autotuning ZN method is not best. They said go for Discrete Autotuning Methods.

Could anyone please help me to move one step ahead toward autotuning.

Actually my requirement is to design a Autotune PID based Temperature controller up to 850 degrees. In some cases i want max temp of 200 degree with different wattage of heater and sometimes i want te ...

Could anyone please give some links, tutorials etc as I searched a lot but feeling not comfortable with all stuff.

Everywhere for autotuning zieglers method is mentioned.

But how to implement th ...

Thanks SherpaDoug for your reply.

Mathematical calculations with scaled integer is fine for me, but i want to know how to find out ultimate gain and period using Ziegler Method during undershoot a ...

Thanks for your reply.

I want to control temp of oven in which sometimes i wants to control in slow manner like with Proportional band from 25 degree and sometimes i want controlling of PID starts ...

Hello

I want to implement Autotuning of PID Algo in PIC16 Microcontroller to control temperature.

Most commonly used Ziegler method is clear to me with Ultimate Gain and Period Oscillations.

...