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	A systematic approach for on-line identification of second-order process model from relay feedback test
	Liu, Tao ; Gao, Furong ; Wang, Youqing
	2010-05-06 ; 2010-05-06
关键词	identification relay feedback test biased second-order-plus-dead-time (SOPDT) model limit cycle denoising SHAPE FACTOR CONTROLLERS DESIGN Engineering, Chemical
中文摘要	Low-order process modeling provides a basis for control system design and on-line autotuning in process control. A systematic on-line identification method is proposed in this article to obtain a second-order-plus-dead-time (SOPDT) model from a single biased/unbiased relay feedback test. The relay response shapes of the three types of SOPDT model, overdamped, critically damped, and underdamped, are first examined and categorized for model structure selection before proceeding with the corresponding parameter identification. Exact expressions of the corresponding limit cycles are derived for assessing process response under relay feedback test. By using the measurable parameters of these limit cycles, the corresponding identification algorithms are subsequently derived in a transparent manner. Two denoising methods are given to cope with measurement noises. Illustrative examples are performed to demonstrate the effectiveness and merits of the proposed identification algorithms. (C) 2008 American Institute of Chemical Engineers.
语种	英语 ; 英语
出版者	JOHN WILEY & SONS INC ; HOBOKEN ; 111 RIVER ST, HOBOKEN, NJ 07030 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/8940]
专题	清华大学
推荐引用方式 GB/T 7714	Liu, Tao,Gao, Furong,Wang, Youqing. A systematic approach for on-line identification of second-order process model from relay feedback test[J],2010, 2010.
APA	Liu, Tao,Gao, Furong,&Wang, Youqing.(2010).A systematic approach for on-line identification of second-order process model from relay feedback test..
MLA	Liu, Tao,et al."A systematic approach for on-line identification of second-order process model from relay feedback test".(2010).

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