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IRE Transactions on Automatic Control

Issue 2 • May 1961

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  • [Front cover and table of contents]

    Publication Year: 1961, Page(s): 0
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  • Foreword to special issue

    Publication Year: 1961, Page(s): 95
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  • The issue in brief

    Publication Year: 1961, Page(s):96 - 97
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  • [Back cover]

    Publication Year: 1961, Page(s): 0
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  • A mean-weighted square-error criterion for optimum filtering of nonstationary random processes

    Publication Year: 1961, Page(s):211 - 216
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    A procedure for use in the design of a physically realizable fime-invariant linear system for optimum filtering of a nonstationary random process in the presence of nonstationary random noise is presented in this paper. First, a new criterion for system performance is defined. On the basis of this criterion, an integral equation for the optimum physically realizable weighting function is derived, ... View full abstract»

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  • A modified Lyapunov method for nonlinear stability analysis

    Publication Year: 1961, Page(s):199 - 210
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (984 KB)

    A modification of the original Lyapunov stability criterion is given, which includes intermediate conditions of stability, as well as "stability in the small" and "stability in the large." A means is developed for applydng it to practical control problems that eliminates much of the guesswork usually required with Lyapunov methods of investigation. The process is based upon an integration of matri... View full abstract»

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  • A technique of linear system identification using correlating filters

    Publication Year: 1961, Page(s):183 - 199
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1120 KB)

    A technique for measuring the impulse response of linear processes while they are on line is described. Such an identification of process dynamics is necessary in process-adaptive control systems. A testing signal and correlating filter are employed after the manner of Turin. Such a procedure requires no multiplier, and the output of the filter is the impulse response as a continuous function of r... View full abstract»

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  • Model feedback applied to flexible booster control

    Publication Year: 1961, Page(s):135 - 142
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    The problem of the filtering of elastic phenomena (bending and sloshing) from space booster-control feedbacks has become increasingly difficult as bending frequencies approach control frequencies in large vehicles. The design problem is compounded by the loop-gain requirements for control of an aerodynamically unstable airframe in a dynamic wind environment. This paper presents a "model feedback" ... View full abstract»

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  • Transfer-function tracking and adaptive control systems

    Publication Year: 1961, Page(s):162 - 166
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    This paper describes a system for determining the parameters of a transfer function of the form: a constant divided by a polynomial in the Laplacian variable s . The system is described in detail for a polynomial of second order, but may be extended to polynomials of any order. The system may be realized in terms of ordinary analog computer components. It prese... View full abstract»

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  • Direct cycle nuclear power plant stability analysis

    Publication Year: 1961, Page(s):237 - 244
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    A power plant with a heat exchanger such as a nuclear reactor substituted for the conventional chemical interburn-ers in a jet engine will cause a considerable change in dynamic performance. The instantaneous power generated by the heat source is not the same as the instantaneous power delivered to the turbine. The basic control problems are analyzed using fixed control parameters and partial deri... View full abstract»

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  • Adaptive servo tracking

    Publication Year: 1961, Page(s):167 - 172
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    This paper describes a self-adaptive sampled-data radar tracking loop. The adaptive tracking loop may be considered to be a low-pass filter with a variable bandwidth. The loop is designed to adapt rapidly to changes in the input signal by monitoring both the apparent error and the loop output. Results show a mean tracking accuracy 25 to 34 per cent higher than that of a comparable linear system at... View full abstract»

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  • Precision of impulse-response identification based on short, normal operating records

    Publication Year: 1961, Page(s):173 - 182
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    The characteristics of a process may be estimated from an observation over a finite interval of time of the input and output variables of the system during a period of normal operation. The determination of the most effective method of analyzing the observed data and of estimating the probable errors in such an analysis is an important problem in the study of complex processes and in the design of... View full abstract»

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  • A minimal time discrete system

    Publication Year: 1961, Page(s):111 - 125
    Cited by:  Papers (42)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1248 KB)

    Consider a sampled-data control system with the following sequence of components in the forward path: a sampler with period T , a zero-order hold circuit, a linear amplifier with saturation limits ±1, and a plant with transfer function G(s)=frac{1}{\Pi \min{i=1}\max {n} (s-\lambda _{i})}. It is assumed that the poles... View full abstract»

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  • On a property of optimal controllers with boundedness constraints

    Publication Year: 1961, Page(s):98 - 110
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1000 KB)

    This paper deals with a theory for optimal control systems designed to operate a plant of known characteristics. It is assumed that error-free measurement of the system input and the system behavior is permitted, but only limited changes in the system characteristics can be effected by the control variables at the designer's disposal. It is shown that within this limitation for a wide class of inp... View full abstract»

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  • A parameter-perturbation adaptive control system

    Publication Year: 1961, Page(s):154 - 162
    Cited by:  Papers (11)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    Theoretical and simulation studies of a parameter-perturbation self-adaptive system are discussed. A number of system block diagrams are included, showing diverse applications of parameter-perturbation adaptive techniques. A particular study has been made using error signals based on an ideal model, and the concept of high-frequency perturbation of the model has been introduced. A linearized mathe... View full abstract»

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  • Sensitivity considerations for time-varying sampled-data feedback systems

    Publication Year: 1961, Page(s):228 - 236
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    A synthesis procedure for linear time-varying sampled-data feedback systems is described. Just as in the continuous system case, one of the advantages of feedback in a sampled-data system is that it can potentially reduce the effect of plant variations on the system performance. To a certain extent, load disturbance and instrument noise may be simultaneously reduced also. A time-domain sensitivity... View full abstract»

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  • Stability of servomechanisms with friction and stiction in the output element

    Publication Year: 1961, Page(s):222 - 227
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    Servomechanisms with friction in the output element are often observed to oscillate, even though the Bode diagram indicates stability. This paper investigates the conditions for this instability and the type of oscillation that can occur. It finds that an overdamped system with a lag equalizer is stable if L< 2 C/C-1 , where View full abstract»

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  • Theory and design of high-order bang-bang control systems

    Publication Year: 1961, Page(s):125 - 134
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    In this paper the nonlinear equations which describe the switching hypersurface of an N th-order linear time-invariant system, with real negative distinct poles, are developed when the input to the system is restricted in amplitude, either intentionally through the use of a relay or due to saturation of the power element. Based on the equations of the switching... View full abstract»

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  • Terminal control system applications

    Publication Year: 1961, Page(s):142 - 153
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (904 KB)

    This paper describes a synthesis procedure for terminal control systems. The synthesis procedure is illustrated by application to the design of an aircraft automatic landing system. A simplified model for the landing aircraft is chosen and justified. The prediction equations for this model are discussed. Using the prediction equations, a two-condition terminal controller, which controls the altitu... View full abstract»

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  • A general performance index for analytical design of control systems

    Publication Year: 1961, Page(s):217 - 222
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    A generally applicable performance index for linear feedback systems is proposed. This performance index enables one to specify a desired (ideal) response towards which the system is optimized. The response of any unity-numerator system can be chosen as the ideal response. The coefficients of the performance index are determined from the specified ideal response, and the procedure of optimization ... View full abstract»

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Aims & Scope

The theory, design and application of Control Systems. It shall encompass components, and the integration of these components, as are necessary for the construction of such systems. The latest title for this publication is IEEE Transactions on Automatic Control.

 

This Transactions ceased publication in 1958. The current retitled publication is IEEE Transactions on Automatic Control.

Full Aims & Scope