Latin Abstract :
The plug&control feature (i.e. to automaticallymake the controller work properlyafter simplyconnecting it in the control
architecture, without further intervention from the operator) is desired in industrial regulators in order to minimize the tuning effort
from the user and in order to speed up the startup of the controller. In this context, a new strategyfor plug&control is proposed for
integrating and first order plus dead time (FOPDT) processes. It is based on the use of three-state and PID control, and on the use
of a simple least-squares based identification technique. The main advantage of the methodologyis that it is time-optimal, i.e. the
process output attains the desired set-point value in minimum time, subject to the saturation limits of the actuator. Simulation
NaturalLanguageKeyword :
Auto-tuning , PID controllers , FOPDT processes , Integrating processes , Time-optimal control
