A reconfigurable PID controllerA reconfigurable PID controller Κεφάλαιο σε Βιβλίο Book Chapter 2019-10-222018enWe survey the Proportional-Integral-Derivative (PID) controller variants and we switch them in runtime via reconfiguration, as the control requirements change. Depending on the PID variant, e.g. P, I, PI, PD, PID, PI-PD, the involved computations to produce the control output are different. We rely on a previous published design to shorten the execution cycle of each controller variant, by increasing the number of arithmetic units operating concurrently. Furthermore, we incorporate a design based on multiplexers that allows for eliminating frequent reconfigurations, which were required in the previous work. Finally, we evaluate our approach in terms of resource utilization and reconfiguration time.http://creativecommons.org/licenses/by/4.0/Lecture Notes in Computer ScienceApplied Reconfigurable Computing Architectures, Tools, and Applications Khan Sikandar Papadimitriou Kyprianos Παπαδημητριου Κυπριανος Buttazzo, Giorgio C., 1960- Kalaitzakis Konstantinos Καλαϊτζακης Κωνσταντινος Springer Verlag Controllers Reconfigurable architectures PID controllers Proportional integral derivative controllers