摘要:

Several exact expressions for the change of coat, resulting from the replacement of the nominal control by a new control or policy, are derived and their importance indicated.

ISSN:0020-7179    

DOI:10.1080/00207177308932392

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

This paper formulates Pontryagin's maximality principle for the optimal damping of vibrations of a pin-jointed structure

ISSN:0020-7179    

DOI:10.1080/00207177308932393

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

Converse theorems for Liapunov stability of non-linear difference equations are presented, which improve upon past results in this area. The main improvement consists in not assuming that solutions can be extended backward in time. When such assumptions are made, however, it is shown that necessary conditions for finite-time stability of non-linear difference equations can be readily derived.

ISSN:0020-7179    

DOI:10.1080/00207177308932394

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

In this paper observers which approximately reconstruct state variables of classes of nonlinear systems are presented. The question of convergence of the reconstruction error is examined for special cases. Simulation results of the performance of some non-linear observers are also included.

ISSN:0020-7179    

DOI:10.1080/00207177308932395

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

The optimal regulation of a linear discrete system in which one wishes to use either the minimum amount of fuel, energy or amplitude in the control has received much attention. It is readily shown that each of these control problems can be equated to that of finding a specific solution to a system of consistent linear equations in the control variables. Various algorithms have been developed which will yield an optimal control ; however, they tend to be computationally inefficient (for the minimum fuel and amplitude problems) and are therefore of little practical value.

ISSN:0020-7179    

DOI:10.1080/00207177308932396

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

A method for an iterative computer-aided design of a class of cascaded digital recursive filters, having specifications in the frequency domain of magnitude and/or phase, is described. The method uses an unconstrained Fletcher-Powell algorithm to minimize a weighted squared magnitude plus phase criterion.

ISSN:0020-7179    

DOI:10.1080/00207177308932397

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

This paper investigates the asymptotic behaviour of a class of periodic functional differential equations containing a small real parameter, μ. In particular, a sufficient condition is developed which ensures that for the magnitude of μ small, but μ. different from zero, the solutions of the equations are asymptotically stable in the sense of Lyapunov

ISSN:0020-7179    

DOI:10.1080/00207177308932398

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

An asynchronized synchronous machine has two field windings and two special excitation control systems. The paper examines the performance of this type of machine during both synchronous and asynchronous operating conditions. The results illustrate the effects of subsidiary feedback signals in the control loops on equilibrium conditions and stability. They are supported by analysis, which establishes the conditions for stability and shows how these depend on the additional control signals.

ISSN:0020-7179    

DOI:10.1080/00207177308932399

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

A new method is presented for the measurement of the Wiener kernels of a non-linear system. The method uses the complex exponential functions as a set of orthogonal functions with which to expand the kernels. The fast Fourier transform is then employed in the most efficient measurement of the kernels so far discovered.

ISSN:0020-7179    

DOI:10.1080/00207177308932400

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor

摘要:

The classical Smith Predictor method for single variable systems is extended to a class of linear multivariable systems. Derivations of the multivariable Smith Predictor are presented for both continuous-time and discrete-time systems which contain time delays in the control variables and/or output variables. As in the classical method, use of the multivariable Smith Predictor eliminates the time delays from the characteristic equation of the closed-loop system

ISSN:0020-7179    

DOI:10.1080/00207177308932401

出版商:Taylor & Francis Group    

年代:1973

数据来源: Taylor