Autotuning of PID Algo in 8 bit Microcontroller

[cmsrlabs]

Hello

I wants 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.

But i want to know how to implement these graphs in C Code. I found somewhere that autotuning function cannot be implemented in 8 bit micros.

Please suggest it whether 8 bit micro can able to do these mathematical calculations or not.

 

[sachinda_thakur]

It is possible to do using 8bit MCU. Don't need graph analysis, simply count time and temperature based on events

 

[cmsrlabs]

Thanks Sachinda_thakur for your reply.

Could you please elaborate more. How to relate time and temperature with PID Autotuning.

 

[cmsrlabs]

Any one know how to select the relay amplitude in Relay Based Feedback Method. On what factors is depends.