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Co-ordinate transformations for second order systems. Part I: General transformations
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DOI：10.1006/jsvi.2002.5165.png)
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When the dynamics of any general second order system are cast in a state-space format, the initial choice of the state vector usually comprises one partition representing system displacements and another representing system velocities. Co-ordinate transformations can be defined which result in more general definitions of the state vector. This paper discusses the general case of co-ordinate transformations of state-space representations for second order systems. It identifies one extremely important subset of such coordinate transformations-namely the set of structure-preserving transformations for second order systems-and it highlights the importance of these. It shows that one particular structure-preserving transformation results in a new system characterized by real diagonal matrices and presents a forceful case that this structure-preserving transformation should be considered to be the fundamental definition for the characteristic behaviour of general second order systems-in preference to the eigenvalue-eigenvector solutions conventionally accepted. (C) 2002 Elsevier Science Ltd. All rights reserved.
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期刊
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4.9
论文数:
1.7W
被引数:
4.8W
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