Continuous-time Parameter Identification Using PI Controllers

For several decades, PID (Proportional-Integral-Derivative) control has succesfully been applied to numerous industrial processes for regulating them. The PID controller has indisputably become a backbone of every automation system being available for controlling a large scale of industrial processes. However, it has also other capabilities than just that for regulating processes by manipulating actuators. A PI controller can be designed to identify continuous-time parameters for a given process model using recorded real process data. This paper proposes a PI controller -based identification method for identifying parameters of simple continuous-time linear and time-invariant single-input single-output process models. The method is presented and simulation examples are shown to address its applicability for identification problems.