Requirements specification and architecture design for Internet-based control systems

The Internet is playing an important role not only in information retrieval, but also in industrial process manipulation. This paper describes an approach to writing requirements specifications for Internet-based control systems and to deriving architecture for this new type of control system according to the requirements specification. Specification is described in terms of a functional model and then extended into information architecture. In contrast to the functional model, the information architecture gives an indication to the architecture of the Internet-based control systems. An integrated-distributed architecture has been derived from the functional model and the information architecture as a case study.