Event-based controllers with external event generation Implementation issues and computational cost study

This paper addresses the implementation of event based controllers with extrinsic event generation. An electronic circuit in charge of the event generation outside of the controller device is proposed. With this circuit, the periodic sampling is avoided, bridging the gap between the main principles of event based control and its implementation by reducing the computational cost produced by the periodic sampling. The advantages of using this approach are presented through a computational cost study in which periodic and event based controllers are compared when implemented under the IEC-61499 standard.