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Advances in Control in the Process Industries: An Exercise in Technology Transfer, 1994. IEE Colloquium on. (Digest No. 1994/081)

Date 30 Mar 1994

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Displaying Results 1 - 10 of 10
  • Combined model-based and rule-based controller for process control

    Publication Year: 1994, Page(s):4/1 - 4/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (256 KB)

    Describes on-going research that is currently being undertaken by the Control Theory and Applications Centre, Coventry University, into developing controllers which make use of both model-based and rule-based techniques. The resulting combined controllers are able to make `better' use of available information on the plant and investigative studies to date indicate that such an approach can provide... View full abstract»

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  • Controlling processes with long transport lags

    Publication Year: 1994, Page(s):1/1 - 117
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (556 KB)

    This paper describes the control of the wet-lap forming process in a hardboard mill. Pearce and Self in a previous paper indicate that the thickness of finished hardboard is affected by fibre type, structure, density, steam press cycle conditions and wet-lap thickness. They also indicate that the main cause of variability in dry board thickness is due to inadequate control over pre-press wet-lap t... View full abstract»

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  • A practical approach to industrial PC based energy management

    Publication Year: 1994, Page(s):2/1 - 2/3
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (180 KB)

    The paper discusses the basic requirements of an energy management system and the role that a PC can play within that system. This includes brief discussion of data acquisition, data processing and the possible benefits of energy management View full abstract»

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  • Automatic control of fibrous matter using computer vision and self tuning knowledge base techniques

    Publication Year: 1994, Page(s):5/1 - 5/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (308 KB)

    This paper describes the development and implementation of a “Fibertron” machine vision system which provides the first continuous, quantitative measurement of refined wood fibres in the composite panel industry. This work highlights the advantages of machine vision in situations where a human is performing a visual assessment of a product, as a basis on which to control a key part of ... View full abstract»

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  • IEE Colloquium `Advances in Control in the Process Industries: An Exercise in Technology Transfer' (Digest No.1994/081)

    Publication Year: 1994
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (44 KB)

    The following topics were dealt with: processes with long transport lags; industrial PC based energy management; closed loop turning; combined model-/rule-based controller; fibrous malter control; automatic clarification control; polymerisation reactor; vibration monitoring techniques; and plantwide process and fiscal control system View full abstract»

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  • Plantwide process and fiscal control system

    Publication Year: 1994, Page(s):9/1 - 910
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    This paper describe how elements of a hardboard mill were instrumented and automated. The paper also describes how a real-time dynamic, fiscal and statistical computer mill model was produced. The purpose of the model is to enable the mill manager meet the order winning criteria and maximise profit View full abstract»

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  • Steps towards automatic clarification control [water supply]

    Publication Year: 1994, Page(s):6/1 - 6/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (244 KB)

    The purification of water for domestic consumption involves several stages of treatment of the raw water to remove suspended solids, colour and bacteria before entering the distribution network. The individual treatment processes include clarification, disinfection, pH adjustment, filtration and taste and odour removal. The paper outlines the gradual introduction of automation strategies including... View full abstract»

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  • Control loop tuning

    Publication Year: 1994, Page(s):3/1 - 3/9
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (556 KB)

    The paper outlines a system called MASTERTUNE, which has been developed to automatically determine the necessary PID parameters by interfacing to existing plant controllers and automatically down loading the values upon completion of the tuning exercise. In addition, the development of commercial controllers which have a programmable facility, has provided the end users with the opportunity to imp... View full abstract»

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  • Advanced control of a polymerisation reactor

    Publication Year: 1994, Page(s):7/1 - 7/3
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (240 KB)

    A problem common to many chemical processes is the presence of a significant pure time delay, due either to transport lag or high order dynamics. Model based control techniques, such as internal model control, (Garcia and Morari, 1982) and Smith predictors, (Smith, 1958) have been proposed for the control of such plants. For most practical applications, such as chemical, power plants, etc. Process... View full abstract»

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  • Using vibration monitoring techniques to minimize plant downtime

    Publication Year: 1994, Page(s):8/1 - 8/2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (140 KB)

    The need for a continuing improvement philosophy for process plant maintenance is acknowledged at New Thames Mill. The authors look at how this objective is being achieved with the integration of condition monitoring data, product quality measurements and a computer based maintenance management system View full abstract»

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