The work is being done within the context of the wet-end (approach system) of a paper making machine. My thesis therefore also involves the modelling and simulation of this portion of the paper machine. The model is being built in an object oriented simulation language called OMSIM, which was developed at the University of Lund, Sweden. This work is part of a joint project with the Control Group at LTH in Lund, headed by Karl Johan Åström. Our goal in creating this model is to develop a test-bed that can be used to test control strategies and plant configurations, in an attempt to improve the quality of the flow to the paper machine, and consequently reduce the MD (Machine Direction) variations in the paper.
Various other students are and have been involved in this project. They are:
The focus in my thesis is on the consistency control loops in and around the mixing chest. I will be building some basic (generic) fluid dynamics blocks in OMSIM, that can be used to create different simulations. I will use these blocks to build a model of the approach system of a specific paper machine, and test my control strategies against it.
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