When asked to define just what Product in Development (PID) control theory is, Cory Estes, owner of Infuse Solutions LLC, used an analogy of a simple thermostat. “You set a temperature and the room ...

Self-regulating systems with feedback loops, i.e., the routing back of the output of a system to its input, have existed since antiquity and have since become an integral part of modern technology.

PID loops are a central component of modulating boiler control systems with applications ranging from basic steam header pressure control to cascading 3-element drum level control. A modern ...