THREE IMPORTANT METHODS IN ROBUST CONTROL THEORY:A BRIEF REVIEW (i)
TANG Wei 1,SHI Song jiao 1,WANG Meng xiao 2, LU Shi jian 3 (1.Automation Department, Shanghai Jiaotong University, Shanghai 200030, China;2.Automation Department, Northwest University of Light Industry, Shaanxi 712081,China;3.Comprehensive Automat
The concept of the robust control theory and the uncertainties existed in control systems are introduced in the first. Then we give out the three research methods: Kharitonov interval theory, structured singular value theory and H ∞ control theory. Secondly, some important items about the first two methods are illustrated respectively in detail, which consist of basic concepts, brief developing process, main research contents and important theorems, etc. Several problems pending further investigation are discussed briefly in the end. H ∞ control theory will be reviewed in another paper in detail.