Design of an intelligent axis

Modern digital control systems for electric drives include high-performance and sophisticated functions implemented either to enhance performance and improve reliability (adaptive controllers, fault detection, etc.) or to simplify human work (dialogue, autotuning, etc.). The authors list, characterize, and sort these functions. They then present a specific real-time executive developed to manage them. This real-time executive, dedicated to critical time applications with important communication constraints, has been designed and implemented on a 16 bit host card. An application has been chosen to test the communication services and the management of the critical-time functions.<>