文章基本信息

标题：Sliding Mode Observers for Plasma Signal Identification in Remote Laser Welding
本地全文：下载
作者：Indira Nagesh ; Indira Nagesh ; Agyapong-Kodua Kwabena 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2015
卷号：48
期号：3
页码：1924-1929
DOI：10.1016/j.ifacol.2015.06.368
语种：English
出版社：Elsevier
摘要：Abstract In this paper, a model for the emission of a plasma signal during the zinc coated steel metal fusion phenomenon is proposed. Remote laser welding process and system identification of plasma signal based on the sliding mode observer are presented. The dynamic behaviour of the keyhole is captured using experimental data from the photodiode sensor. A multi-input single-output (MISO) model is designed, the equivalent injection signal using a unit vector sliding mode observer is applied to update the dynamic matrix coefficients. The variation in the model parameters due to process disturbances in the laser fusion phenomenon is captured by recursively updating the matrix parameters, using matrix forgetting factor approach. The simulation result shows an accurate estimation of plasma signal emitted during the laser welding process in the presence of process disturbances.
关键词：KeywordsRemote Laser WeldingPlasma Signal ModelSystem IdentificationSliding Mode Observer