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

Issue 6 • Jan. 1960

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Displaying Results 1 - 25 of 28
  • Transistor amplistat-regulated sectional drive at Southland paper mills

    Publication Year: 1960, Page(s):369 - 375
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (10098 KB)

    THE HISTORY of the paper industry and the history of paper machine drives is a story of continued progress; progress in improved performance, increased reliability, and operator convenience. View full abstract»

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  • Input-output relationships for multisampled-loop systems

    Publication Year: 1960, Page(s):375 - 385
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2846 KB)

    A general gain expression for a multisampled-loop sampled-data system is proposed, and an extended table of systems (Table I) to which this gain expression has been applied is presented. View full abstract»

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  • Analysis of nonlinear sampled-data control systems ¿¿ I

    Publication Year: 1960, Page(s):386 - 390
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1641 KB)

    AN INTERESTING SIMILARITY exists between the mechanical sampling and zero-order hold function of sampled-data systems, and the mathematical ¿¿sampling¿¿ which is characteristic of numerical methods of analysis. This paper describes an investigation into this similarity. The results are numerical methods of analysis principally adapted to the transient solution of nonlinear sampled-data control sys... View full abstract»

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  • Analysis of nonlinear sampled-data control systems ¿¿ II

    Publication Year: 1960, Page(s):390 - 394
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3496 KB)

    GENERAL METHODS of numerical analysis are developed in a previous paper1 for nonlinear sampled-data control systems in which the nonlinearity effectively occurs before the linear frequency-sensitive elements in the sampled error channel. These methods are inadequate if the system nonlinearity effectively occurs between two linear frequency-sensitive elements, as shown in Fig. 1. This paper extends... View full abstract»

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  • Cathodic protection applications at the Hanford works

    Publication Year: 1960, Page(s):394 - 399
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3742 KB)

    THIS PAPER describes existing, presently planned, and experimental impressed-current cathodic protection (CP) installations at the Hanford Atomic Products Operation. The Hanford plants are located in the south-central part of the state of Washington. Climatic conditions are semiarid and the plant area is typical desert country. The soil is predominantly glacial deposits ranging from fine sand to g... View full abstract»

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  • A solid rotor A-C generator for high-temperature electrical systems

    Publication Year: 1960, Page(s):400 - 405
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3504 KB)

    RELIABILITY has always been the primary requirement for aircraft generating systems. The rapid development of high-performance aircraft has continually demanded greater reliability along with increased operating temperatures. These two conditions are not directly compatible. As temperatures increase the choice of insulations and lubricants is narrowed to a few which, in general, have inherently lo... View full abstract»

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  • Dual-mode relay servos

    Publication Year: 1960, Page(s):405 - 411
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2049 KB)

    THIS PAPER describes a dual-mode servo which utilizes a relay or contactor for both the saturated mode and the linear mode. The dual-mode servo, which was first suggested by McDonald,1,2 operates as an on-off or bang-bang controller for large amplitude errors (saturation mode) and as a linear servo when the error approaches zero (linear mode). The saturation mode may be optimized for a minimum tra... View full abstract»

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  • Constant-Frequency A-C power using variable speed generation

    Publication Year: 1960, Page(s):411 - 418
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2655 KB)

    THE USUAL approach to provide a constant-frequency alternating-current electric power system is to drive a generator at constant speed, thus producing output power at constant frequency. Numerous methods have been devised for obtaining constant frequency power from a generator running at variable speeds. Analysis of these systems have shown the vast majority of these methods to be impractical for ... View full abstract»

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  • Characteristics and measurement of ripple in aircraft electric power systems

    Publication Year: 1960, Page(s):418 - 423
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3671 KB)

    This paper describes the work accomplished at NADEVCEN (the Naval Air Development Center) to develop definition of frequency characteristic of ripple and to provide guidance in the voltage measurement of ripple. Factors influencing the unpredictable variations in ripple measurements are recognized and noted for guidance. Frequency characteristic data of ripple accumulated from various aircraft d-c... View full abstract»

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  • Nuclear radiation and electronic equipment

    Publication Year: 1960, Page(s):423 - 426
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1298 KB)

    NUCLEAR radiation causes material degradation through several processes. Ionizing radiations, the charged particles, and gamma rays cause organic materials to change chemically and electrical conductivity to increase. Energetic neutrons displace atoms by knocking them out of their position in the structure of the material; and the displaced atoms, as charged particles, also cause ionization and se... View full abstract»

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  • Reliability analysis for aircraft generators

    Publication Year: 1960, Page(s):426 - 434
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3088 KB)

    EVER-INCREASING reliability wherever economically justifiable long has been an important objective for the designers of all electric equipment. Rough yardsticks ¿ such as service life, maintenance costs, and complaint charges ¿ have been used as measures of success in the attainment of this objective, but precise, quantitative indices of reliability have been lacking in many cases. This lack of ... View full abstract»

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  • Computer evaluation of high-temperature aircraft A-C electrical system designs

    Publication Year: 1960, Page(s):434 - 444
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (10625 KB)

    This paper describes a design and analog computer study of a high-temperature aircraft a-c electrical system. The study includes an extensive, nonlinear representation of the a-c alternator and shows the effects of temperature, load, and regulator and exciter nonlinear behavior on system stability and transient performance. Torque-limiting techniques are evaluated and a computer approach for study... View full abstract»

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  • An elementary design discussion of thermoelectric generation

    Publication Year: 1960, Page(s):445 - 450
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2113 KB)

    AT THE PRESENT TIME, many electric power sources of unconventional nature are being pursued vigorously in research and development. One of these, thermoelectric generation, has enjoyed renewed interest because of the development of semiconductor thermoelectric materials yielding efficiencies which are now practical for some devices and encouraging for others. View full abstract»

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  • New materials for transformer-rectifier unit in high-temperature aircraft

    Publication Year: 1960, Page(s):450 - 456
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (11012 KB)

    AIRCRAFT operating at multi-Mach speeds and high altitudes subject some portions of the electric systems to severe environmental changes. A program is underway to develop a suitable system including an a-c generator with constant-speed drive, a contactor, a circuit breaker, a current transformer, and a transformer-rectifier unit for conversion to direct current. Development and selection of materi... View full abstract»

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  • Trends in ground bed design for cathodic protection of underground structures

    Publication Year: 1960, Page(s):456 - 462
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (8733 KB)

    CATHODIC protection of underground structures for the mitigation of corrosion to those structures has long been an established means for controlling corrosion. It is interesting to note that this paper deals primarily with a relatively new technique in the field of corrosion, proposed originally by the man given credit in ¿Who's Who¿ for the development of cathodic protection. This man, Mr. R. J... View full abstract»

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  • Temperature prediction in thermal-lag equipment

    Publication Year: 1960, Page(s):462 - 465
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1249 KB)

    IN MISSILE applications, electric equipment is required to function for a relatively short period of time in a hot ambient atmosphere, but is deprived of external cooling media such as air or oil. The dependability of the equipment depends on its ability to absorb its own heat losses or to transmit these losses by conduction to cooler surroundings. The general purpose of this paper is to present a... View full abstract»

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  • Application of switching transistors and saturable reactors in a high-performance servo

    Publication Year: 1960, Page(s):466 - 474
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3024 KB)

    THE PURPOSE of this paper is to demonstrate that the performance of instrument servos can be improved by the exclusive use of magnetic devices and transistors to perform the functions of amplification, modulation, and demodulation. Substitution of solid-state devices for electronic amplifiers and mechanical choppers not only increases the efficiency, the reliability, and the durability of the syst... View full abstract»

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  • Rapid transit is expanding in Chicago

    Publication Year: 1960, Page(s):474 - 476
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1179 KB)

    MAN is that inexplicably complex creature who confidently expects to fly to the moon in the next decade and yet spends more time between home and work now than he did a decade ago. View full abstract»

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  • Analysis of A-C servomotors operated from unbalanced nonsinusoidal voltage sources and nonlinear discontinuous source impedances

    Publication Year: 1960, Page(s):476 - 481
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4728 KB)

    MANY ANALYTICAL studies directed at the predetermination of output characteristics of a-c servomotors have been based on the assumptions of constant-source impedance and sinusoidal excitation. Under these assumptions, the method of symmetrical components serves admirably, particularly when steady-state characteristics are desired, and in cases where the duration of the mechanical transients makes ... View full abstract»

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  • A suppressed-carrier signal generator for servosystem instrumentation

    Publication Year: 1960, Page(s):481 - 485
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2323 KB)

    This paper describes a method of obtaining a sinusoidal suppressed carrier voltage using two synchros connected in such a way as to eliminate the need for slip rings. The result is a relatively simple and maintenance-free signal generator that is capable of producing modulation frequencies as high as 500 cps (cycles per second). View full abstract»

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  • Control by stochastic adjustment

    Publication Year: 1960, Page(s):485 - 491
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2976 KB)

    This paper is concerned with the problem of designing an ¿adaptive controller¿ for the control of a certain class of dynamic processes. In general, these processes consist of a dynamic element governed by a nonstationary, linear differential equation. It is assumed that the designer knows only the form of the differential equation and bounds on the parameter variations but not the exact equation... View full abstract»

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  • The effect of elevated temperature on flash-welded aluminum-copper joints

    Publication Year: 1960, Page(s):491 - 495
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (9579 KB)

    BOTH ALUMINUM and copper have high conductivity and hence are excellently suited for use as electric conductors. Since both metals are widely used, connections between them frequently have to be made. The most common type of connection is the bolted joint, as when an aluminum bus bar is bolted to a copper stud. Although this type of connection is satisfactory, frequently a more efficient and less ... View full abstract»

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  • Transient response and the stabilization of feedback amplifiers

    Publication Year: 1960, Page(s):495 - 503
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2788 KB)

    ANY VACUUM-tube or transistor amplifier is continuously subjected to random current and voltage disturbances of varying peak amplitude and waveshape. Thermal noise is a common example of such excitation. The importance of this interfering effect, as far as the circuit designer is concerned, depends to a large extent upon the relative magnitudes of the desired signals for which the amplifier is des... View full abstract»

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  • Proposed recommended practices for medium-voltage motor controllers for rubber and plastics industries

    Publication Year: 1960, Page(s):504 - 506
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1132 KB)

    THE RUBBER and Plastics Subcommittee of the General Industry Applications Committee is presenting for discussion the following proposed Recommended Practices, in the hope that comments from the wide circulation so provided will be helpful in attaining maximum usefulness from the specifications. Membership of the Working Group assigned to this project consists of engineers from both large and small... View full abstract»

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  • Use of a mathematical error criterion in the design of adaptive control systems

    Publication Year: 1960, Page(s):506 - 512
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2329 KB)

    Mathematical error criteria are examined in terms of the goals of an adaptive control system. For dynamic processes which contain pure-time delay, a modification of these error criteria is postulated on the basis of the time-domain concept of control developed here. 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