By Topic

IRE Transactions on Circuit Theory

Issue 1 • Date March 1954

Filter Results

Displaying Results 1 - 9 of 9
  • Trends in feedback systems (editorial)

    Publication Year: 1954, Page(s):2 - 8
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (617 KB)

    There are a number of new and powerful techniques rapidly being developed for the analysis and synthesis of feedback control systems. Four of these techniques are illustrated by some of the papers in this issue. One of the most fruitful of these is in the field of statistics, and in particular its application to nonlinear systems. R. C. Booton presents a paper which derives the cross-power density... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Nonlinear control systems with random inputs

    Publication Year: 1954, Page(s):9 - 18
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (643 KB)

    The describing-function method for the analysis of nonlinear systems with sinusoidal inputs is interpreted as a mean-square quasi-linearization technique and is generalized to apply to random signals. An amplitude-sensitive (or zero-memory) nonlinearity is interpreted as being approximately equivalent to a linear frequency-insensitive device, and a formula is derived for its equivalent gain. A sim... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A method of analysis and synthesis of closed loop servo systems containing small discontinuous non-linearities

    Publication Year: 1954, Page(s):19 - 34
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (986 KB)

    A method is presented for molding non-linear elements of a system into equivalent linear elements so that existing linear methods of analysis and synthesis may be applied. The method can be applied in a Large number of practical cases, particularly in the more complex systems. It is based upon a Fourier expansion of the output waveform of a sinusoidally excited discontinuous element. Several cases... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Stability of feedback systems using dual Nyquist diagram

    Publication Year: 1954, Page(s):35 - 44
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (667 KB)

    This paper introduces a procedure for determing the stability of a feedback system using a dual Nyquist diagram. Such a diagram results when the characteristic equation of the system is interpreted to be the sum of two frequency-dependent functions F1(p) + F2(p) instead of the normal expression 1 + G(p)H(p). This diagram then consists of two polar plots; one plot represents the locus of one of the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optimum lead-controller synthesis in feedback-control systems

    Publication Year: 1954, Page(s):45 - 48
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (383 KB)

    The phase lead network, shown in figure 1, had demonstrated its ability to improve the relative stability of linear feedback amplifiers long before it was adopted as one of the principal stabilizing networks by those interested in the newer field of servomechanisms. Its wide acceptance was based upon its simple form when dealing with d.c. signals and its ability to produce rate-type signal compone... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the comparison of linear and nonlinear servomschanism response

    Publication Year: 1954, Page(s):49 - 55
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (549 KB)

    In trying to design or adjust a dynamic system for optimum performance, the engineer is helped by a knowledge of theoretical limits on the capabilities of the system. Examples of such limits are the gain-bandwidth product of amplifier design and the coding theorem of information theory. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Predictor servomechanisms

    Publication Year: 1954, Page(s):56 - 70
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (926 KB)

    This paper is concerned with the problem of optimizing the transient behavior of a servomechanism. In this instance the term optimum is used in the sense of a transient response in minimum time as compared with the familiar minimum RMS error criteria for an optimum system. The use of the term ¿predictor¿ arises from the fact that the system. utilizes the information contained in the Input and it... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Conversion of a beline cycle with an ideal transformer into a cycle without an ideal transformer

    Publication Year: 1954, Page(s):71 - 75
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (498 KB)

    O. Brune1 has proved that any rational ¿positive real¿ function possesses a one terminal-pair network configuration containing a finite number of linear passive elements. Brune suggested the ladder synthesis for positive real functions. In general his synthesis procedure contains mutual couplings which are not desirable from a practical standpoint. Thus, there has always been a great desire to e... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • What is nature's error criterion?

    Publication Year: 1954, Page(s): 76
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (281 KB)

    It is well known that the Fourier series is not the only trigonometric polynomial that may be used to represent a periodic function. It is a polynomial with the property that the mean square error between a partial sum and the given function is a minimum; that is to say, it approximates the given function so as to make the mean square error a minimum. This error criterion is only one of many that ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.