Regul niveau flottant, floating level control

Bonjour, Je cherche un algorithme de regulation de niveau flottant a implenter dans un API disposant de fonctions PID, integrale, derivee et calcul basique.
L'algorithme devra etre accessible a des automaticiens et regleurs, expert du controle avanc s'abstenir. Merci.
Hello, I search an algorithm for floating level control to write in RTU with basic functions (PID, integral, derived and calculation). The algorithm must be understanding by maintenance people, not for expert in advanced control. Thanks.
cross-posted in fr.sci.automatique, sci.engr.control
== 78000 Versailles France
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