摘要:

In this paper algorithms far the computation of all four Luonbarger canonical forms are presented. The algorithms are based on an appropriate sequence of elementary similarity transformations and are well suited to digital computer implementation. They also provide considerable improvement over existing methods particularly when the transformation matrix as well as the canonical form is required.

ISSN:0020-7721    

DOI:10.1080/00207727608941896

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

Lower bounds for a quadratic cost functional, applicable to certain optimal control problems, arc derived. These bounds are tight, and are found to bo useful in determining the quality of suboptimal controls. The use of a cost functional lower bound in the snboptimal control of a linear distributed parameter system is included.

ISSN:0020-7721    

DOI:10.1080/00207727608941897

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

In this paper it is shown that modal control theory can be used to synthesize control policies for production-inventory systems which incorporate unfilled-order backlogs. The theory is illustrated by the presentation of typical transient and steady-state response characteristics of controlled production-inventory systems of this class.

ISSN:0020-7721    

DOI:10.1080/00207727608941898

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

The Newton-Raphson method is a basic technique in unconstrained minimization which exactly minimizes a quadratic, symmetric approximation to an objective function. Functions with some degree of asymmetry can be optimized more efficiently by exact minimization of asymmetric approximations. In this paper, a special separable convex asymmetric fourth degree function is proposed whose minimum can Vie found in a finite number of steps, despite the high degree of the approximation. The method may be regarded as a. quasi-Newton method with a few operations added to measure and correct for asymmetry.

ISSN:0020-7721    

DOI:10.1080/00207727608941899

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

Using a relation among the solutions for the state variables of an uncontrollable system, necessary and sufficient conditions and algorithms for testing the controllability of a system are given making use of signal-flow graphs.

ISSN:0020-7721    

DOI:10.1080/00207727608941900

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

Specialized care facilities must be extended to the small hospital if equality of medical care is to be available to all. The sophisticated patient monitoring systems, essential to the efficient operation of these facilities, are not cost effective for this class of hospital. This paper presents an algorithm for the cost-effective design of computerized monitoring systems. The algorithm takes into account the requirements of the medical staff, as well as the patient loading statistics for the hospital. It thus provides a means of adjusting the monitoring system to the specific needs of a given hospital.

ISSN:0020-7721    

DOI:10.1080/00207727608941901

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

This paper investigates a procedure for on-line adaptation in linear control systems. This is accomplished by the use of a digital adaptive loop, which adjusts its parameters to satisfy a given performance measure. Few assumptions are made about the unknown parameters in the plant—only knowledge of loose bounds on the variations may be needed. Estimates are made of these parameters and the effects of the estimates illustrated. A simple example is presented to illustrate the adaption procedure and the performance of the system under such a procedure.

ISSN:0020-7721    

DOI:10.1080/00207727608941902

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

The method of state augmentation has been used to convert a state equation having delay to one without delay. A known algorithm of discrete dynamic programming is applied to the augmented system to obtain the optimal control conation. These equations are, then, decomposed in a manner so as to reduce the computational effort needed. The efficiency of the proposed algorithm has been illustrated by making an operations count of the proposed algorithm as compared to that of the augmented system.

ISSN:0020-7721    

DOI:10.1080/00207727608941903

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

In this paper we consider a class of stochastic systems governed by McShane stochastic differential equations for which both parameters and controls are to be chosen optimally with respect to a certain performance criterion over a fixed time interval. It is shown that this problem can be converted into an equivalent optimization problem of distributed parameter systems of parabolic type with a Cauchy boundary condition. For this reduced problem a necessary condition for optimality is given. This result is then used to obtain the individual necessary conditions for optimal controls and optimal parameters. Finally, a bang—bang principle is shown to hold true for n class of linear optimal control problems.

ISSN:0020-7721    

DOI:10.1080/00207727608941904

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor