Computer based control with real-time capabilities

摘要

Control systems in many fields require perfect time accuracy and reliability. That is why guaranteed real-time behavior is needed. It is evident by the growing trend of the use of fieldbuses in building of Networked Control Systems. The software layer has a very significant influence on the system performance and requires thorough examination before the utilisation of a specific real-time system. The goal of this paper is to present and examine run-time environments that support real-time capabilities. We compare the performance of RTAI and Java Real-Time System in controlling of a sample plant with quick response and present our previously developed real control systems that are based on the use of RTAI that runs the real-time layer of the control system and Java that is responsible for the user interaction.