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Identification of spatially varying parameters for a distributed system — Application to a thermal process

✍ Scribed by Yvon Jarny

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
679 KB
Volume
23
Category
Article
ISSN
0378-4754

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✦ Synopsis

l'he identification of spatially varying parameters for a partial differential equation describing the thermal behaviour of an experimental e&ruder will be. phenetited. The ~&ate equation of the modeL is given in a discretifunctional framework and the identification problem will be considered in this framework, X steepest descent method will then be used in order to find a numerical solution to the problem. The cost functional to be minimized is non quadratic and takes into account constraints imposed on the parameters or their variations with respect to the spatial variable. The disere&approximation approach permits the exact numerical, eomputation of the cost functional gradient. Temperature measurements made on the experimental extruder a& used and results of identification obtained with constant or spatially varying parameters arie compated.

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