摘要:

A well-known method of designing control systems which are linear except for control signal saturation is to replace the saturation constraint by a constraint on the integral-square-value of the control signal, and then use lineal1 theory to calculate a controller which minimizes integral-square-error. In the present paper, this controller is compared with the best non linear controller, with a best linear controller which is such that the control signal only just leaches saturation and with the best linearly switched relay system. Three simple plants are considered. For these it is found that the energy-constrained design yields an integral-square-error which is up to 50% greater than the minimum obtainable, and yields controller parameters which differ from their optimal values by factors which can be large.

ISSN:0020-7179    

DOI:10.1080/00207176708921799

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

The random gating of stationary random signals is considered. A general formulation is made in which a random gate is characterized by two interval probability density functions. Such a formulation permits the evaluation of the spectral densities of randomly–gated stationary random signals.

ISSN:0020-7179    

DOI:10.1080/00207176708928180

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

Thin paper presents a study of a simple intermittent regulator on a single machine infinite bus system. The method of analysis usedisZ-transform analysis. The power system is analysed as a feedback sampled-data control system.

ISSN:0020-7179    

DOI:10.1080/00207176708921800

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

This paper deals with the optimal on-line control of a stationary repetitive single-stage discrete state Markov process whose statistical description is initially unknown. In the presence of uncertainty concerning the optimal control policy, the controller must perform the dual functions of estimation and control, Evidently it is necessary in the course of learning the process parameters to probe the system with inputs which appear in retrospect to be non-optimal from the control standpoint. The algorithm which orders these non-optimal decisions is termed a strategy. The ideal dual strategy is defined as that which extracts the maximum information from the process for a given cost, the term ‘information’ here denoting a decrease in error probability.

ISSN:0020-7179    

DOI:10.1080/00207176708921801

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

A hybrid, continuous-cum-sampled data model, is presented to describe the action of the control system for directing the human gaze at a moving target. The motion of the target is confined to a horizontal direction in a plane perpendicular to the line of gaze. The model's superiority is claimed in the sense that it accounts for the muscle force and dynamics, and also the various non-linearities present in the eye. Efforts have been made to obtain an output which resembles qualitatively the limited experimental evidence available and account for the various phenomena observed in the human eye.

ISSN:0020-7179    

DOI:10.1080/00207176708921802

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

This paper presents a comparison of the various types of regulators namely the current-actuated, the voltage-actuated the load angle-actuated and the rotor angle-actuated regulators, for a single machine infinite bus system. The same study is extended to a two machine system. The stability limit is given as the angle at which the critical eigenvalue of the system matrix changes sign.

ISSN:0020-7179    

DOI:10.1080/00207176708921803

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

The present article considers a class of simple differential games. Necessary. conditions satisfied along optimal trajectories of such games are derived under the assumption that the class of pure strategies contain the optimal strategies. Two examples are treated for illustrative purposes. Finally, possible areas of future research are discussed.

ISSN:0020-7179    

DOI:10.1080/00207176708921804

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

The variable gradient method was used to generate a Lyapunov function for the system of first-order differential equations describing the synchronous machine, and Fallside and Patel (1966) used this V-function to estimate the domain of stability of the system.

ISSN:0020-7179    

DOI:10.1080/00207176708921805

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor