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

Issue 2 • Date May 1955

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Displaying Results 1 - 9 of 9
  • Analysis of errors in sampled-data feedback systems

    Publication Year: 1955, Page(s):65 - 71
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (545 KB)

    The system error in sampled-data feedback systems resulting from the application of a test function is an important design parameter. The ¿system error¿ is defined as the difference between the actual output of the system and the desired output. There are two components which contribute to this error: one, called ¿organic error,¿ is brought about by the system energy storages, and the other, c... View full abstract»

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  • An adjustable speed power selsyn system

    Publication Year: 1955, Page(s):71 - 75
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (457 KB)

    THIS paper treats a system consisting of two wound-rotor induction motors, with rotors paralleled through slip rings, the speed of which is controlled by a frequency changer connected to the slip rings. The system is a form of synchronous tie in which the driving motors and selsyns are incorporated in one machine. The block diagram in Fig. 1 gives a general picture of the system. View full abstract»

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  • Electrical grounding systems and corrosion

    Publication Year: 1955, Page(s):75 - 83
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (707 KB)

    THE object of this paper is to consider the proper conduction of electric currents to the earth resulting in adequate grounding, and also conduction of currents through the earth resulting in corrosion or the prevention of corrosion. The functional objectives in designing an electrical grounding system are to provide a low resistance path for the fault currents to ground, and to provide safety for... View full abstract»

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  • An analytical method for the design of relay servomechanisms

    Publication Year: 1955, Page(s):83 - 90
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    RELAY servomechanisms in general show advantage over continuous servomechanisms with regard to cost, size, weight, and complexity. The application of relay servomechanisms, however, has been retarded by the meager understanding of obtainable operating characteristics and the lack of practical design methods. View full abstract»

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  • Time variation of industrial system short-circuit currents and induction motor contributions

    Publication Year: 1955, Page(s):90 - 101
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (943 KB)

    CALCULATIONS of the approximate variation with time of industrial power system short-circuit currents were made for a discussion of the circuit-breaker application procedure proposed in an AIEE paper.1 The results of the calculations indicate that induction motor loads produce contributions to short-circuit currents that do not decay rapidly in every case and perhaps should not be ignored even whe... View full abstract»

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  • Underground corrosion on rural electric distribution lines

    Publication Year: 1955, Page(s):101 - 109
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (701 KB)

    SOME studies of underground corrosion associated with the grounding of multigrounded wye-connected distribution lines are described in this paper. Underground corrosion damage, mainly of anchor rods, has been experienced in enough locations to deserve special attention, but there seems to be very little electric utility experience to draw on in deciding what to do about it. The lack of information... View full abstract»

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  • Frequency response from experimental nonoscillatory transient-response data

    Publication Year: 1955, Page(s):109 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    Curves are derived and presented which provide a ready means for approximating transfer functions with time constants up to three in number, and also dead time, from the experimental non-oscillatory transient response produced by a step change. The transfer function containing the time constants and dead time may be used to obtain the corresponding frequency response. These curves then are a graph... View full abstract»

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  • A method for evaluating nonlinear servomechanisms

    Publication Year: 1955, Page(s):114 - 123
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (749 KB)

    A method is presented for determining a valid mathematical description of a class of nonlinear servomechanisms from measurements of the servo response to a set of input signals. In the sense used here, a valid mathematical description means a description that predicts the response of the servomechanism to a given class of inputs with a desired degree of accuracy. The set of input signals may consi... View full abstract»

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  • Design and application of a peak voltage detector to industrial control systems

    Publication Year: 1955, Page(s):123 - 128
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (445 KB)

    MANY industrial control, or servo, systems are characterized by their high power level, low cost, and moderate performance when compared with the high-performance servo systems that are used extensively in military applications. This paper describes the control portion of such an industrial type of servo system in some detail. Application of the control portion, or peak voltage detector, to a comp... 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