How to control a gas boiler using several temperature sensors using a servo machine?

Question

Raspberry Pi

There is a gas boiler and a servo machine fastened to it, which can rotate the boiler control knob.
There are several temperature sensors (street and several indoor ones, you can add a water temperature sensor at the outlet of the boiler)
There is a raspberry pi in which all this is included. Everything works from the point of view of iron, I see graphs of temperature changes, I can turn the servo.
I can’t figure out how to manage the boiler correctly from a LOGICAL point of view with the help of all this stuff? Those. need an algorithm, how to maintain a given temperature using the above means?
Setting the knob to a certain position sets the HEATING CARRIER temperature, but not the actual temperature in the house!

Answer 1

Sometimes control problems are easier to solve using fuzzy logic systems. If you can designate a set of rules for adjusting the view:
etc. then a fuzzy logic system could help you.
Another option is to make a simple controller based on if else constructs. It will work worse than the regulators described above, but will not require special knowledge.
By the way, it is not necessary to manage

using PWM or just ON-OFF

just redo the regulator given in the answer above. PWM duty cycle % = Rotation angle %.

Answer 2

from a logical point of view, it will be some kind of heat capacity formula with three variables that are selected empirically

Answer 3

A task from the "theory of automatic regulation" or "control". For a better understanding, you can read some lecture notes or literature "for dummies" (almost a pun).
For example, I found an article for an electric kettle, it will give an idea of ​​what needs to be done
www.mitridatius.narod.ru/publications/termoregulat...

Answer 4

Or maybe you don't risk it with the boiler. Still, gas, and everything there is not so difficult to connect a server. I myself recently got to know the boiler better when my parents installed a new one for
themselves teh-dom.ru/magazin/gazovye_kotly They set it to the desired mode and let it work. It's a shame if the server confuses him and that's it ...