Improved disturbance observer-based control for multivariable processes with time delays based on modified inverse model

doi:10.1177/0142331219869429

	Improved disturbance observer-based control for multivariable processes with time delays based on modified inverse model
	Jin, Qibing 1; Cai, Wu 1; Du, Xinghan 2
刊名	TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL
	2019-09-05
页码	12
关键词	Multivariable disturbance observer time delay modified inverse model disturbance rejection
ISSN号	0142-3312
DOI	10.1177/0142331219869429
通讯作者	Cai, Wu(buctcaiwu@163.com)
英文摘要	In this paper, a modified multivariable disturbance observer-based (MDOB) design method is proposed to improve disturbance rejection performance for multiple-input-multiple-output (MIMO) processes with multiple time delays. Two important issues in MDOB control are studied here: computation of the inverse model and design of the filter. First, to reduce the influence of time delays, the nominal process is factorized as a diagonal time delay matrix and a remaining transfer function matrix, and the remaining part is used to design the inverse model in MDOB. Considering the difficulty of matrix inversion, the Nyquist set is used to describe the dynamic of the inverse model, and accordingly, the simplified inverse model is obtained by the curve fitting technique. In addition, to guarantee the properness and stability of the simplified inverse model, a compensator is introduced. Rules for selecting compensator parameters are given. Finally, with the proposed inverse model and compensator, the filter Q(s) is optimized by minimizing the H-infinity norm of the disturbance estimation error. The filter constants are determined by fully consider the disturbance rejection performance and robustness of the system. Simulation examples are presented to illustrate the effectiveness and merits of the proposed method.
资助项目	National Natural Science Foundation of China[61673004] ; Fundamental Research Funds for the Central Universities of China[XK1802-4]
WOS关键词	REJECTION CONTROL ; PID CONTROLLERS ; DESIGN ; SYSTEMS ; PERFORMANCE ; ROBUSTNESS
WOS研究方向	Automation & Control Systems ; Instruments & Instrumentation
语种	英语
出版者	SAGE PUBLICATIONS LTD
WOS记录号	WOS:000485489700001
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities of China
内容类型	期刊论文
源URL	[http://ir.ia.ac.cn/handle/173211/27250]
专题	中国科学院自动化研究所
通讯作者	Cai, Wu
作者单位	1.Beijing Univ Chem Technol, Inst Automat, Beisanhuan East Rd 15, Beijing 100029, Peoples R China 2.Jiangsu Normal Univ, Coll Elect Engn & Automat, Xuzhou, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Jin, Qibing,Cai, Wu,Du, Xinghan. Improved disturbance observer-based control for multivariable processes with time delays based on modified inverse model[J]. TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL,2019:12.
APA	Jin, Qibing,Cai, Wu,&Du, Xinghan.(2019).Improved disturbance observer-based control for multivariable processes with time delays based on modified inverse model.TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL,12.
MLA	Jin, Qibing,et al."Improved disturbance observer-based control for multivariable processes with time delays based on modified inverse model".TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL (2019):12.