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- W3021491359 abstract "The first applications of real-time digital control to pulp and paper industry stem from early 60's. Then a centralized hardware was applied to quite large and poorly defined problems. These early projects were not very successful; one of the main reasons being the unreliable and limited hardware. During 70's the so-called packaged systems entered into the market. These were built by using the existing minicomputers and those systems were dedicated to smaller and well-defined problem areas; for example dry end controls of paper machine, batch-digesting, Kamyr digester, bleach plant etc. Today we are ahead a third generation of these systems in the Pulp and Paper Industry. The microprocessor technology has created the powerful microcomputers and the distributed digital instrumentation systems. This has lead to the concept: decentralized control and centralized reporting and supervision. This means that the lowest level of the control hierarchy will be handled by a digital instrumentation system and with a local datanetwork (data highway, bus) a hierarchical structure including area control and coordination, production planning and scheduling and management information system at the higher levels a total mill-wide hierarchy will be built. There is also clearly a trend towards more integration between process control functions and other EDP activities inside the organization. These existing systems and future needs and trends are discussed in the paper." @default.
- W3021491359 created "2020-05-13" @default.
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- W3021491359 date "1984-01-01" @default.
- W3021491359 modified "2023-09-28" @default.
- W3021491359 title "TRENDS IN DIGITAL CONTROL APPLICATIONS IN PULP AND PAPER INDUSTRY" @default.
- W3021491359 doi "https://doi.org/10.1016/b978-0-08-029980-8.50048-2" @default.
- W3021491359 hasPublicationYear "1984" @default.
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