Title :
Study on Hammerstein models of sparse nonlinear identification with LS-SVM
Author :
Zhao, Huaqi ; Cao, Jun ; Liu, Yaqiu
Author_Institution :
Coll. of Mech. & Electr. Eng., Northeast Forestry Univ., Harbin
Abstract :
These instructions give you basic guidelines for preparing papers for conference proceedings. This paper put forward a kind of new method aimed at identification of Hammerstein models in nonlinear system. With the analysis of the problem of sparseness that based on least square support vector machine (LS-SVM), the predictive output function of static nonlinear loop was obtained, and applied state space model to dynamic linear loop, got a new nonlinear identification model of Hammerstein. Simulation results shows that the method has better precision of identification, high-speed of response. Its computing time approximately for other modelspsila 30%, improved identification efficiency obviously, and testified the validity and feasibility of the method.
Keywords :
least squares approximations; nonlinear systems; state-space methods; support vector machines; Hammerstein models; dynamic linear loop; least square support vector machine; predictive output function; sparse nonlinear identification; state space model; static nonlinear loop; Computational modeling; Conference proceedings; Functional analysis; Guidelines; Least squares methods; Nonlinear dynamical systems; Nonlinear systems; Predictive models; State-space methods; Support vector machines; Hammerstein models; LS-SVM; sparse nonlinear;
Conference_Titel :
Intelligent Control and Automation, 2008. WCICA 2008. 7th World Congress on
Conference_Location :
Chongqing
Print_ISBN :
978-1-4244-2113-8
Electronic_ISBN :
978-1-4244-2114-5
DOI :
10.1109/WCICA.2008.4593325