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Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry

Issue 2 • Date May 1959

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Displaying Results 1 - 13 of 13
  • Relay-type feedback control systems with dead time and sampling

    Publication Year: 1959, Page(s):49 - 54
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2493 KB)

    THIS investigation is a time domain study of relay-type feedback control systems with dead time and sampling. It introduces a new approach to the analysis and design of relay-type control systems employing sampling. Because of the sampler, clamper, and relay, the system is nonlinear, and discontinuous in time. Systems of this general nature have been analyzed in the past by Chow1 and Russell2 usin... View full abstract»

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  • Control of infrared radiation

    Publication Year: 1959, Page(s):54 - 59
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2788 KB)

    THE CHARACTERISTICS of commonly used infrared sources have been rather well delineated in the past,1,2 so that the quantity and quality of their radiant outputs need not be covered in this paper. Generally speaking, these sources have one or two dimensions, represented by point sources, line sources, and area sources. All are basically omnidirectional, and their utilization is dependent on some fo... View full abstract»

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  • The use of frequency-response tests in the analysis of a foil mill automatic gage control

    Publication Year: 1959, Page(s):59 - 67
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2706 KB)

    FREQUENCY-response measurements are often made in the laboratory to determine performance of components or systems. Such tests are far more rare on complete processes. To the authors' knowledge, the tests described here were the first to vary sinusoidally, while rolling, the speed of a metal rolling mill to determine how strip thickness was affected by the frequency of oscillation. View full abstract»

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  • The optimum control of multiactuator systems

    Publication Year: 1959, Page(s):67 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2533 KB)

    MUCH of the theory of control systems deals with the problem of reducing to the lowest possible value the dynamic error in single-variable control systems. In the study of that problem it is generally assumed that any conceivable method of compensation is justified, provided that it allows the error, as measured in accordance with some criterion, to be reduced; in other words, the purpose of the c... View full abstract»

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  • Application of continuous system design concepts to the design of sampled data systems

    Publication Year: 1959, Page(s):74 - 79
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2424 KB)

    THE THEORY associated with the design of sampled data systems1 has progressed to the point where it is possible to design a digital controller pulse transfer function so as to obtain an over-all system pulse transfer function which will meet certain specifications such as being stable, and physically realizable; having a minimum settling time in response to a given input; having ripple-free operat... View full abstract»

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  • Electric and magnetic conditions inside an induction-heated workpiece

    Publication Year: 1959, Page(s):79 - 83
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1699 KB)

    THE PURPOSE of this paper is to improve the general understanding of induction heating through a familiarity with what happens electrically and magnetically inside a solid bar being heated. AIEE Standard No. 541 defines induction heating as the heating of a nominally conducting material in a varying magnetic field due to its internal losses. This paper reports the results of a study of how these l... View full abstract»

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  • Transient voltages in rectifier transformers

    Publication Year: 1959, Page(s):83 - 90
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5202 KB)

    This paper discusses transient-voltage phenomena which occur in rectifier circuits involving mercury-vapor hot-cathode tubes commonly used as power sources in many electronic equipments such as broadcast transmitters, high-frequency industrial-heating applications and the like. In particular, reference is made to equipments with power outputs in the range 10¿200 kw with direct voltages of 3 to 15... View full abstract»

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  • Significance of heat pump coefficient of performance

    Publication Year: 1959, Page(s):90 - 96
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2588 KB)

    This paper deals with the load aspects and economic aspects of three types of residential heat pump systems which employ supplementary heat sources. It contains illustrations of their load characteristics over a wide range of annual COP (coefficient of performance), depicts relationships of the relative costs to serve these loads from long-range and short-range considerations, and provides, as a r... View full abstract»

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  • Signal stabilization of a control system

    Publication Year: 1959, Page(s):96 - 100
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1576 KB)

    FEEDBACK loops, in states of self-oscillation, can often be stabilized by the introduction of an appropriate signal. In this paper a theory is developed to explain this phenomenon. The theory is applied to a system which is linear except for a limiter. Experimental results for the system showing the removal of the hunt by a stabilizing signal are given in a previous paper.1 View full abstract»

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  • A study of nonlinear systems with random inputs

    Publication Year: 1959, Page(s):100 - 105
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1732 KB)

    IT IS THE PURPOSE of this paper to present the results of investigating the probability distribution of the response of a nonlinear system when it is subjected to a Gaussian random input. The mathematical theory of a Markoff random process is used; the associated Fokker-Planck equation for a generalized continuous nonlinear system is presented. The justification for assuming the error response of ... View full abstract»

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  • Elements of reactor-controlled reversible induction-motor drives

    Publication Year: 1959, Page(s):106 - 115
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3020 KB)

    THE PROBLEM of controlling continuously the speed of induction motors is as old as the motor itself. Numerous schemes have been developed and successfully applied since the end of the last century. Most of them are relatively efficient but require auxiliary machines. Some are inherently critical in manufacture and operation. As a result, when efficient and continuous speed control over a wide rang... View full abstract»

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  • The linear least squares synthesis of multivariable control systems

    Publication Year: 1959, Page(s):115 - 120
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2000 KB)

    A MULTIVARIABLE system is characterized by a multiplicity of inputs and outputs. In the following, it will be assumed that such systems can be described by linear, time-in variant, input-output relations over the whole range of operation or over the restricted range of interest. Thus, let then, the system input-output relation may be expressed compactly as where R, C, and A are input, output, and ... View full abstract»

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  • Effect of closed-loop transfer function pole and zero locations on the transient response of linear control systems

    Publication Year: 1959, Page(s):121 - 128
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2238 KB)

    THE ROOT LOCUS methods have in recent years gained a widespread popularity among control engineers engaged in the work of both analysis and synthesis. The reason for this is rather obvious; the root locus techniques give the system designer more information of the kind in which he is interested when analyzing a given system; when he is synthesizing a control network, these techniques permit him to... View full abstract»

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Aims & Scope

This Transaction ceased production in 1963. The current retitled publication is IEEE Transactions on Industry Applications.

Full Aims & Scope