Specifications

Volume: 7
Issue: 8
Issue date: 2013
Publication year: 2013
Pages: 766-773
Language: English
ISSN: 17519675
E-ISSN: 17519683
Document type: Journal article (JA)
Publisher: Institution of Engineering and Technology, Six Hills Way, Stevenage, SG1 2AY, United
Kingdom
Abstract: The dynamic behaviour of many systems can be approximated by a static
non-linearity in series with a linear dynamic part. Systems with static input or output
non-linearities are very common in many engineering applications. Such models are known as
block-oriented models in the existing literature. The Hammerstein model is a special kind of
block-oriented model, where a non-linear block is followed by a linear system. This study
investigates the identification of Hammerstein systems with asymmetric two-segment
piecewise-linear non-linearities. The basic idea is to employ a key-term separation technique and
a corresponding auxiliary model initially. Then, the identification problem of non-linear system is
changed into a nonlinear function optimisation problem over parameter space. Further, the
estimates of all the parameters of the non-linear block, the linear subsystem and the noise part
are obtained based on an improved particle swarm optimisation algorithm. Finally, simulation
examples are included to demonstrate the effectiveness and robustness of the proposed
identification scheme. © The Institution of Engineering and Technology 2013.
Number of references: 35
Main heading: Nonlinear systems
Controlled terms: Algorithms - Identification (control systems) - Linear systems -
Models - Particle swarm optimization (PSO) - Piecewise linear techniques
Uncontrolled terms: Block-oriented models - Engineering applications - Identification
problem - Identification scheme - Optimisation problems - Particle swarm
optimisation algorithms - Separation principle - Separation techniques
Classification code: 723 Computer Software, Data Handling and Applications - 731.1 Control
Systems - 902.1 Engineering Graphics - 921 Mathematics
DOI: 10.1049/iet-spr.2013.0042
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.
13.
Accession number: 20133916791331
Title: A high strength Mg-6Zn-1Y-1Ce alloy prepared hy hot extrusion
Authors: Yang, Wenpeng1, 2 ; Guo, Xuefeng1/杨文鹏;郭学峰
Author affiliation: 1 School of Materials Science and Engineering, Henan Polytechnic
University, Jiaozuo 454003, China
2 School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048,