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IEEE Transactions on Automatic Control

Issue 3 • June 1970

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Displaying Results 1 - 25 of 44
  • [Front cover and table of contents]

    Publication Year: 1970, Page(s): 0
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  • Issue in brief

    Publication Year: 1970, Page(s):283 - 284
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  • On-off limit-cycle controllers for reaction-jet-controlled systems

    Publication Year: 1970, Page(s):285 - 299
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1922 KB)

    Analytical expressions have been obtained by Mendel [1] for performance cost functions that describe the behavior of a reaction-jet-controlled system during an on-off limit cycle. The cost functions are expressed in terms of the amplitudes of the limit-cycle switch statestheta_{s}anddot{theta}_{s}. No structure is assumed foru(t)in [1]. In this paper,u(t) View full abstract»

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  • Generalized pulse-modulated feedback systems: Norms, gains, Lipschitz constants, and stability

    Publication Year: 1970, Page(s):300 - 315
    Cited by:  Papers (52)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2234 KB)

    Sufficient conditions for the asymptotic stability in the large of pulse-modulated feedback systems are developed from the operator theoretic viewpoint. Stability here requires that the pulse-modulated feedback system be a Lipschitz continuous operator on the extended spaceL_{1e}. This strong definition of stability is motivated by an examination of a first-order pulsewidth-modulated sy... View full abstract»

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  • Input-output stability of linear time-invariant systems

    Publication Year: 1970, Page(s):316 - 319
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The Nyquist stability criterion and the notion of typensystems have been extended from lumped parameter systems to a larger class of linear single-loop single-input single-output time-invariant systems, with constraints presented in the text. View full abstract»

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  • Correlation measurement and identification--A novel approach

    Publication Year: 1970, Page(s):334 - 335
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (306 KB)

    A novel system is discussed for measuring the auto-correlationR(tau)of a random process. The system consists of a scaling device and a filter whose output equalsR(bt). Thus,R(tau)is determined not by a succession of discrete values but as a continuous signal in real time. It is also shown that the instrument can be used to determine the impulse responsey(t) View full abstract»

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  • Determination of reachable set for a linear discrete system

    Publication Year: 1970, Page(s):339 - 342
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (654 KB)

    An easily implemented method for obtaining the reachable setR_{N}, N > n, of annth-order discrete system with constraints on the input is described. This method uses elementary matrix calculations at each step to construct the boundary hyperplanes of the reachable set. The result can be applied to determine the minimum control time required for a given terminal state. If View full abstract»

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  • On pole assignment in linear systems with incomplete state feedback

    Publication Year: 1970, Page(s):348 - 351
    Cited by:  Papers (120)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (571 KB)

    The following system is considered:dot{x}= Ax + Buy = Cxwherexis annvector describing the state of the system,uis anmvector of inputs to the system, andyis anlvector (l leq n) of output variables. It is shown that if rankC = l, and if (A,B) are controllable, then a linear feedback of the o... View full abstract»

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  • A minimum-fuel mode for steady-state attitude control of an earth-orbiting spacecraft

    Publication Year: 1970, Page(s):362 - 365
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (662 KB)

    Steady-state reaction control of the attitude of a spacecraft in the presence of environmental disturbance torquesTis usually accomplished by using the thrusters to establish limit-cycle motion of acceptable amplitudes about all three axes. For such strategies, the greatest lower bound for the propellant consumption is proportional tointmin{t1}max{t2}|T|dt. The results presen... View full abstract»

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  • Minimum energy control of systems with time delay

    Publication Year: 1970, Page(s):365 - 368
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (499 KB)

    The problem of minimizing the cost functional corresponding to minimum control energyI = intmin{0}max{infty}u^{2} dtfor the linear system with delaydot{x}(t) = Ax(t) + Bx(t - h) + cu(t)is considered. From sufficient conditions for optimality, one obtains a set of algebraic equations. Numerical solution of these equations yields the optimal control law. View full abstract»

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  • A method to determine whether two polynomials are relatively prime

    Publication Year: 1970, Page(s):379 - 380
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (278 KB)

    In this paper, it is established that a necessary and sufficient condition for two monic polynomialsf(lambda)andg(lambda)to have a common root is thatdet [f(B)] = 0ordet [g(A)] = 0, whereAandBare, respectively, the companion matrices associated withf(lambda)andg(lambda). The simplicity of this method is illustr... View full abstract»

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  • Identifying solutions of distributed parameter systems by stochastic approximation

    Publication Year: 1970, Page(s):393 - 395
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (414 KB)

    First Page of the Article
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  • Comments on "Optimal feedback characteristics from stochastic automaton models"

    Publication Year: 1970, Page(s):403 - 404
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (361 KB)

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  • Comments on the review of state space analysis

    Publication Year: 1970, Page(s): 404
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    First Page of the Article
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  • Introduction to the mathematical theory of control processes, Vol. I - Linear equations and quadratic criteria

    Publication Year: 1970, Page(s):406 - 407
    Cited by:  Papers (1)
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  • [Back cover]

    Publication Year: 1970, Page(s): 0
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  • Closed-form solutions for a class of linear time-varying systems

    Publication Year: 1970, Page(s):389 - 390
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    A method is presented for finding closed-form solutions for a class of linear time-varying systems. The method results from performing a time-varying linear transformation on the original system and adjoining a differential equation constraint. A set of underdetermined auxiliary equations (i.e., more unknowns than equations) must be solved. An example is given to show the usefulness of the method. View full abstract»

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  • Computation of time-optimal controls using a second-variation descent search

    Publication Year: 1970, Page(s):358 - 362
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    A second-variation descent search is proposed for computing time-optimal control functions for linear time-invariant plants. Since the piecewise constant structure of the optimal control function parameterizes the relevant two-point boundary value problem, the terms required in the variational analysis are simply first and second partial derivatives of an appropriate scalar cost function with resp... View full abstract»

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  • A modification of the energy metric algorithm to include the Routh-Hurwitz criteria

    Publication Year: 1970, Page(s):373 - 374
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    A simple extension of the energy metric algorithm is presented which modifies the system equation so that the resultant form of the Lyapunov function generates the Routh-Hurwitz conditions for the reduced linear system. A third-order example is included. View full abstract»

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  • Optimal control of a string of moving vehicles

    Publication Year: 1970, Page(s):386 - 387
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    Two extensions of a previously published work on the determination of an optimal controller for a string of moving vehicles are presented. It is shown that the revised system is more effective than the previously proposed system, especially with regard to passenger comfort because it takes into account jerk, the rate of change of acceleration and deceleration. View full abstract»

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  • Qualitative analysis of polynomials using matrices

    Publication Year: 1970, Page(s):380 - 382
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    Qualitative information about the zeros of a given polynomial can be obtained using its companion matrix. Previous results on the number of zeros which are distinct and the number which lie in a given half-plane are extended to give the number of distinct real zeros. View full abstract»

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  • Identification-adaptive quadratic-cost linear system control by mean and variance correction

    Publication Year: 1970, Page(s):397 - 398
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The preceding correspondence [1] gives a technique for correcting the feedback control coefficients with each change (in the mean of the model) provided by concurrent system identification. The new result here is a similar technique that incorporates changes in both the mean and covariance of the system model. View full abstract»

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  • A two-stage learning control system

    Publication Year: 1970, Page(s):351 - 354
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    Learning heuristics for an on-line controller are presented, and various aspects of the problem are discussed. The controller is required to achieve optimal regulator control for an unknown process in the face of random disturbances. A computer method of two-stage learning is employed in which the first stage is coarse and attempts to satisfy the terminal boundary conditions on the basis of subgoa... View full abstract»

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  • Discrete estimation algorithms for randomly sampled stochastic signals

    Publication Year: 1970, Page(s):335 - 339
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    Sequential estimation of the state of a linear continuous system from randomly sampled noisy measurements is considered. Reformulation of the original problem leads to an interesting correlation between plant and measurement noise, which requires a special sequential algorithm. Effects on estimation error variance by varying the ratio of the discrete sample period to the average of the random samp... View full abstract»

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  • The matrix properties of minimum-time discrete linear regulator control

    Publication Year: 1970, Page(s):390 - 391
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The properties of the multiple-input time-optimal regulator state-transition matrix for linear discrete systems are developed by using the matrix concepts of nilpotency, eigenvector analysis, and Jordan canonical form. View full abstract»

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Aims & Scope

In the IEEE Transactions on Automatic Control, the IEEE Control Systems Society publishes high-quality papers on the theory, design, and applications of control engineering.  Two types of contributions are regularly considered

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Meet Our Editors

Editor-in-Chief
P. J. Antsaklis
Dept. Electrical Engineering
University of Notre Dame