A Quasilinearization Approach for Parameter Identification in Nonlinear Abstract Cauchy Problems

P. MORIN AND R. D. SPIES

Revista MAT. -Serie A

Departamento de Matemática, Facultad de Ciencias Empresariales, Universidad Austral

Año: 2001 vol. 3 p. 27 - 41

1515-4904

Abstract. A quasilinearization approach to parameter identification in nonlinear abstract Cauchy problems in which the parameter appears in the nonlinear term, is presented. This approach has two main advantages over the classical one: it is much more intuitive and the derivation of the algorithm is done without need of the sensitivity equations on which classical quasilinearization is based. Sufficient conditions for the convergence of the algorithm are derived in terms of the regularity of the solutions with respect to the parameters. A comparison with the standard approach is presented and an application is included in which the nonphysical parameters in a mathematical model for shape memory alloys are estimated.