Sökning: "change control process"

Visar resultat 6 - 10 av 451 avhandlingar innehållade orden change control process.

  1. 6. Exploring Process Aspects of Change Impact Analysis

    Författare :Per Jönsson; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; change impact analysis; process support; change control process; software evolution;

    Sammanfattning : Change is inevitable in software development. During the entire lifecycle of a software system, from conception to retirement, things happen that require the system to be changed: the hardware and software environment changes, customer needs evolve, flaws are found, and so on. LÄS MER

  3. 7. Realising full-scale control in wastewater treatment systems using in situ nutrient sensors

    Författare :Pernille Ingildsen; Industriell elektroteknik och automation; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reglerteknik; robotteknik; Automatiska system; control engineering; Instrumentation; Wastewater treatment; Control; Full-scale plants; Control structures; Electronics and Electrical technology; Elektronik och elektroteknik; robotics; Automation; kontroll av utsläpp; pollution control; Miljöteknik; Environmental technology;

    Sammanfattning : Abstract A major change in paradigm is taking place in the operation of wastewater treatment plants as automatic process control is becoming feasible. This change is due to a number of different reasons, not least the development of online nutrient sensors, which measure the key parameters in the biological nutrient removal processes, i.e. LÄS MER

  4. 8. Averaging level control in the presence of frequent inlet flow upsets

    Författare :Peter Rosander; Alf J. Isaksson; Johan Löfberg; Morten Hovd; Linköpings universitet; []
    Nyckelord :Averaging level control; PI control; Surge tanks; Optimal control; Robust MPC; Process control;

    Sammanfattning : Buffer tanks are widely used within the process industry to prevent flow variations from being directly propagated throughout a plant. The capacity of the tank is used to smoothly transfer inlet flow upsets to the outlet. Ideally, the tank thus works as a low pass filter where the available tank capacity limits the achievable flow smoothing. LÄS MER

  5. 9. Organising manufacturing development

    Författare :Anders Berger; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; process control; change process; participation; human resource; balance; scope; organisation; manufacturing development; technology; change content; management;

    Sammanfattning : .... LÄS MER

  7. 10. Fault detection in lambda-tuned control loops

    Författare :Magnus Berndtsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reglerteknik; Control Engineering;

    Sammanfattning : Poorly operating control loops cause loss in productivity in almost every industry worldwide. Therefore performance monitoring has been an active area of research for the past decades. In this work, a newly developed fault detection method is applied to the monitoring of lambda-tuned control loops. LÄS MER