Abstract
Standardization for development of open, economical and efficient control system has been progressed by international and domestic technical committee and numerous vendors around the world. As a major example, we can pick up OPC standard and pc-based control system. Following the advent of pc-based control system, there are a lot of movement of expanding linux based technology into automation field such as development of OPC for linux and linux based HMI. As the first step of coping with global movement of standardization and openness, middleware for management of system resources of MS Windows based control system was developed in POSCO. As the next step for building up standard framework for platform and vendor independent development of software, middleware for linux and UNIX based control system has been developed. We can get the easiness of management and development of software, built-up of control system with high level of extensibility and self-engineering power by development of the middleware. In this paper, development of UNIX based middleware will be introduced in detail. In the last part of this paper, evaluation of performance of middleware will be presented.
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