R. Whalley et al., MATRIX QUADRATIC MODELS, Proceedings of the Institution of Mechanical Engineers. Part I, Journal of systems and control engineering, 210(1), 1996, pp. 31-43
Process mechanical system models are considered and the techniques for
analysis are discussed. A method for the investigation of system mode
ls which possess multiple degrees of freedom is outlined. To illustrat
e this general procedure the dynamical response of a pulp blender-beat
er, with dual impellers and five degrees of freedom, for paper and boa
rd manufacturing is computed.