Design and performance analysis of middleware-based distributed control systems

This paper presents object models and service models such without lots of considerations about data transmissions between as an I/O object, a control object, a broadcasting service and an event service for a distributed control system (DCS), and three types of distributed control systems based on CORBA, DCOM, and Tspace, are designed and implemented using the suggested object models and service models. They are applied to the Ball and Beam position control system and their response times are measured. It is known from these measurements that the CORBA-based DCS has shorter response time than both DCOM-based one and Tspace-based one. This paper suggests two advanced modules of broadcasting service and event service to reduce communication delays without modification of ORB structure.