Title :
Identification of Wiener-type nonlinear systems by using M-sequence correlation method
Author :
Harada, Hiroshi ; Toyozawa, Yukio ; Kashiwagi, Hiroshi ; Yamaguchi, Teruo
Author_Institution :
Grad. Sch. of Sci. & Technol., Kumamoto Univ., Kumamoto
Abstract :
Many classes of nonlinear systems can be represented by Volterra kernels. The authors have recently developed a method for identification of Volterra kernels of nonlinear systems by using M-sequence and correlation technique. In this paper, the authors propose a new method for identification of nonlinear mechanical systems by use of Volterra kernels. The nonlinear mechanical systems are approximated to a nonlinear vibrating system which consists of a mass, a dumper, a linear spring and nonlinear and springs. Then, the parameters, which represent the nonlinear springs are calculated by use of the Volterra kernels. From the results of computer simulation and experiment, the parameters that represent the nonlinear characteristics of the nonlinear mechanical systems can be identified by the proposed method.
Keywords :
Volterra equations; correlation methods; identification; nonlinear systems; stochastic processes; M-sequence correlation method; Volterra kernels; Wiener-type nonlinear systems; dumper; identification; nonlinear mechanical systems; nonlinear springs; nonlinear vibrating system; Computer simulation; Correlation; Kernel; Linear systems; Mathematical model; Mechanical systems; Nonlinear systems; Parameter estimation; Springs; System identification; Cross-correlation function; M-sequence; Nonlinear mechanical system; System identification; Volterra kernel;
Conference_Titel :
SICE Annual Conference, 2008
Conference_Location :
Tokyo
Print_ISBN :
978-4-907764-30-2
Electronic_ISBN :
978-4-907764-29-6
DOI :
10.1109/SICE.2008.4655117