Requirements specification and architecture design for internet-based control

The Internet is playing an important role not only in information retrieving, but also in industrial processes manipulation. This paper describes an approach to writing requirements specification for Internet-based control systems and to deriving architecture for this new type of control systems according to the requirements specification. Specification is described in terms of a functional model and then extended into information architecture. Distinct from 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.