摘要:

AbstractThis paper deals with the robust control of linear single‐input, single‐output (SISO) systems. First, general concepts of the frequency‐domain approach are presented. We then focus on the particular problem of flexible structure and control. A new method is proposed which combines the advantages of hyperstability and small gain approaches. Finally, an application of an industrial sight system prototype is det

ISSN:1049-8923    

DOI:10.1002/rnc.4590050602

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1995

数据来源: WILEY

摘要:

AbstractThe problem of output tracking in the presence of singularities started by Hirschorn and Davis (1987)2is reexamined. A transformation which allows us to make a study of the closed‐loop stability of the nonlinear system is proposed. An error feedback control law relaxes the initial conditions imposed on the system and the function to be followed, obtaining asymptotic output tracking. A study of the singular tracking problem, when there exist disturbances or uncertainties in the dynamics, is also made. Again a stability analysis is carried out. Finally, the results obtained for the SISO case, to the MIMO case are extende

ISSN:1049-8923    

DOI:10.1002/rnc.4590050603

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1995

数据来源: WILEY

摘要:

AbstractRobustness problems involving real parametric uncertainty can be reformulated as mixed μ problems, where the block‐structured uncertainty description is allowed to contain both real and complex blocks. Upper and lower bounds for the mixed μ problem have recently been developed, and this paper examines the computational aspects of these bounds. In particular a practical algorithm is developed to compute the bounds. This has been implemented as a Matlab function (m‐file), which is currently available in conjunction with the μ‐Tools toolbox. Some results from our extensive numerical experience with the algorithm are presented. The algorithm performance is very encouraging, in terms both of accuracy of the resulting bounds, and of growth rate in required computation with problem size. In particular it appears that one can handle medium‐size problems (fewer than 100 perturbations) with reasonable computational re

ISSN:1049-8923    

DOI:10.1002/rnc.4590050604

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1995

数据来源: WILEY

摘要:

AbstractIn this paper, new and simple algebraic criteria are derived via elementary proofs to provide easy sufficient conditions for the standard absolute stability problems of nonlinear systems, i.e. Lur'e problems. These criteria are equivalent to the famous graphical circle criteria and Popov criterion. By means of the Sturm theorem and the Euclidean division algorithm, a Routh‐Hurwitz‐like Sturm criterion is obtained. No graphical technique is needed. Only basic numerical manipulations are involved in the new crite

ISSN:1049-8923    

DOI:10.1002/rnc.4590050605

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1995

数据来源: WILEY

ISSN:1049-8923    

DOI:10.1002/rnc.4590050606

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1995

数据来源: WILEY

ISSN:1049-8923    

DOI:10.1002/rnc.4590050601

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1995

数据来源: WILEY