ISSN:1049-8923    

DOI:10.1002/rnc.4590010102

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

年代:1991

数据来源: WILEY

摘要:

AbstractLetGbe a rational function of degree 2. Explicit formulae are given for the distance fromGtoH (k)∞in theL∞norm,k= 0, 1, and for the uniqueǦϵH (k)∞at which the distance

ISSN:1049-8923    

DOI:10.1002/rnc.4590010103

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

年代:1991

数据来源: WILEY

摘要:

AbstractThe degrees of freedom that are available in the solution set of the multivariable Nehari‐extension problem are used to minimize an

ISSN:1049-8923    

DOI:10.1002/rnc.4590010104

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

年代:1991

数据来源: WILEY

摘要:

AbstractIn this paper, the bounds of allowable parameter variations in the LQG regulator for fixed weighting matrices are obtained and the asymptotic properties of these bounds with respect to weighting matrices are analysed. It is shown that the guaranteed bounds of allowable parameter variations, which are independent of weighting matrices, are often small but not necessarily small under some conditions. It is also shown that under some conditions, the allowable bounds of the LQG regulator can become as large as those of the LQ regulator. In addition, a loop transfer recovery method for perturbed systems is derived under which the LQG regulator may possess the same robustness as the LQ regulator. Examples are given to validate these results.

ISSN:1049-8923    

DOI:10.1002/rnc.4590010105

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

年代:1991

数据来源: WILEY

摘要:

AbstractFormulae, explicitly symmetric in the roots of the denominator, are derived for the best approximation to a rational function of degree 2 by an analytic function and by a function with at most one pole.

ISSN:1049-8923    

DOI:10.1002/rnc.4590010106

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

年代:1991

数据来源: WILEY

摘要:

AbstractThis paper presents a relatively simple approach, based on chain scattering descriptions, to the synthesis of internally stabilizing controllers which result in a cost function withH∞norm strictly less than a prespecified bound. State‐space formulae for a generator of all suboptimal controllers are found by solving two coupled J‐lossless coprime factorizations of a chain scattering matrix description. A mixed‐sensitivity design problem is used to illustrate the solution procedure, and to demonstrate how in certain cases only one algebraic Riccati equation need be solved to get a s

ISSN:1049-8923    

DOI:10.1002/rnc.4590010107

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

年代:1991

数据来源: WILEY

ISSN:1049-8923    

DOI:10.1002/rnc.4590010101

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

年代:1991

数据来源: WILEY