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Stock preparation design principle based on disturbance attenuation. Variation frequency response to thick stock, when passive low-pass filtering elements and active control methods are used (Kokko, 2002).  

Stock preparation design principle based on disturbance attenuation. Variation frequency response to thick stock, when passive low-pass filtering elements and active control methods are used (Kokko, 2002).  

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Fig. 1. Behaviour of an asymptotically stable and unstable process.  
Fig. 2. Stock preparation design principle based on disturbance...
Fig. 3. Simplified PM A process configuration.  
Fig. 4. Simplified PM B process configuration.  
+4 Fig. 5. Impulse responses of PM A short circulation.  
Simulation-aided paper machine stability studies
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SIMS 2006 Proceedings of the 47th Conference on Simulation and Modelling. Helsinki, 27. - 29.9.2006.
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... In addition, one can consider model-aided control systems as a facet of mill-wide modeling. These kind of studies have been conducted for example by Lappalainen et al. (2003) and Iso-Herttua et al. (2006). There has been some software development for modeling and simulation in the pulp and paper industry, see for example Niemenmaa et al. (1998), Barber, Scott (2007a;2007b) and Jahangirian et al. (2010). ...
Dynamic simulation and optimization of an SC papermaking line - Illustrated with case studies
Article
  • Jun 2010
  • NORD PULP PAP RES J
Nordic Pulp & Paper Research Journal Vol.25 Nr.2, 213 - 220 Dynamic modeling and simulation software can be used to simulate the industrial processes such as papermaking in order to improve the efficiency of the process. A dynamic simulation model can be combined with an optimization method to maximize the advantages which simulation tools can offer. In this paper, we combine dynamic process simulation and optimization to see how it can benefit a papermaking process which was envisaged to consist of a TMP mill, stock preparation, short circulation, a paper machine, and a reel. The aim is to increase the efficiency and minimize the costs involved in papermaking.
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