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  • 1
    Electronic Resource
    Electronic Resource
    Associative memory approach to the identification of structural and mechanical systems (1993)
    Springer
    Journal of optimization theory and applications 76 (1993), S. 207-223 
    Details
    ISSN: 1573-2878
    Keywords: Parameter identification ; nonlinear mechanical and structural systems ; associative memory ; adaptive training ; recursive memory matrix
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract This paper presents a new method for identification of parameters in nonlinear structural and mechanical systems in which the initial guesses of the unknown parameter vectors may be far from their true values. The method uses notions from the field of artificial neural nets and, using an initial set of training parameter vectors, generates in an adaptive fashion other relevant training vectors to yield identification of the parameter vector in a recursive fashion. The simplicity and power of the technique are illustrated by considering three highly nonlinear systems. It is shown that the technique presented here yields excellent estimates with only a limited amount of response data, even when each element of the set comprising the initial training parameter vectors is far from its true value—in fact, sufficiently far that the usual recursive identification schemes fail to converge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00939605
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    Paper (German National Licenses)
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  • 2
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    A nonparametric identification method for a class of non-linear systems (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A relatively simple nonparametric method for the identification of a class of close-coupled nonlinear multi-degree-of-freedom systems has been developed. The identification of arbitrary memoryless nonlinearities is possible through knowledge of the accelerations, velocities, and displacements of the various masses. These quantities are used to obtain the surfaces of the restoring forces as functions of the intermass displacements and velocities. The method was demonstrated by application to a four-degree-of-freedom system to identify the restoring forces. It is found that the identification results are relatively insensitive to measurement noise.
    Keywords: STRUCTURAL MECHANICS
    Type: AIAA PAPER 81-0527 , Conference on Structures, Structural Dynamics and Materials; Apr 06, 1981 - Apr 08, 1981; Atlanta, GA
    Format: text
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    NASA TECHNICAL REPORTS
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