Showing papers in "IFAC Proceedings Volumes in 1965"

TL;DR: In this article, a technique for numerical identification of a discrete time system from input/output samples is described, and strategies for control of the system are obtained using linear stochastic control theory.

TL;DR: The paper describes a method of automatic process parameter estimation which has been mechanised with the aid of hybrid (analogue-digital) equipment, and differs from earlier schemes of this type in not requiring direct measurement of the input and output time derivatives of the process.

TL;DR: In this paper, Liapunov's second method is applied to synthesize the adaptive loop guaranteeing the stability under certain conditions, using two theorems due to Kats and Krasovskii.

TL;DR: In this paper, the concept of a six-dimensional state space is used to develop the fundamental equations of linearized midcourse guidance, and both fixed and variable end-point (variable-time-of-arrival) problems are considered.

TL;DR: In this paper, the authors describe the difficulty of human pilots to introduce adequate adaptation of their control provided much of the motivation for the development of automatic adaptive control systems in high performance aircraft, which may climb from sea level to extremely high altitude in minutes.

TL;DR: A survey of methods of reducing the Mayer-Bolza variational problem to a boundary-value problem for a system of nonlinear differential equations can be found in this article.

TL;DR: In this article, the authors describe the requirements on the guidance and control system of both the booster and the spacecraft for the unmanned exploration of the Moon and nearby planets, which imposes very significant requirements.

TL;DR: A number of methods of linearised system dynamic identification, particularly those which do not require knowledge of the internal structure of the system, yield a system description in the form of weighting function (impulse response), or its Fourier transform frequency response.

TL;DR: In this paper, three distinct types of hillclimbing methods are studied; variations on the conventional discrete search as proposed by Bocharov and Fel’dbaum(2), Kushner's method(3), and the piecewise cubic method(8), presented herein.

TL;DR: A decomposition technique applied to the optimum control problem for interacting dynamic systems is used to generate an equivalent two level hierarchy of sub-problem.

TL;DR: In this article, a magnetic torqueing system was developed at the Applied Physics Laboratory for controlling spin rate and spin axis orientation of a satellite, which can be used to cause the satellite to spin faster or slower, depending on whether the resulting dipole moment leads or lags the component of the earth's magnetic field in the X-Y plane.

TL;DR: In this paper, the authors discuss the learning process that takes place when a man acquires a "Structured Skill" in adaptively controlled conditions The phrase Structured Skill refers to a skill that satisfies some rather involved axioms 1,2,3,4,5.

TL;DR: In this article, the evolution of attitude control techniques within the framework of the TIROS weather satellite program, starting in about 1958, led to a particularly simple stabilization system used in the operational weather satellite system now being implemented for the United States Weather Bureau by NASA and RCA.

TL;DR: The guidance and navigation problems inherent in the Apollo mission are discussed and elements of the development program and design improvements of Block II over Block I hardware will be revealed.

TL;DR: An adaptive system would be one having the feature of intentional changes of the system characteristics in order to achieve a specified performance in the presence of changing characteristics of its environment.

TL;DR: The overall Apollo spacecraft configuration includes two separate manned spacecraft, the command module for earth launch and reentry and cislunar flight including lunar orbit, and the lunar excursion module designed for the excursion from lunar orbit to the moon's surface and return as mentioned in this paper.

TL;DR: In this article, the basic concept and implementation of the terminal guidance system for the landing phase is described for the Surveyor project, which is performed under the auspices of the Jet Propulsion Laboratory and the National Aeronautics and Space Administration.

TL;DR: In this paper, the notion of admissible control is borrowed from statistical decision theory and the selection of suitable admissible policies is discussed, and how admissible controllers may be obtained.

TL;DR: In this article, the rotational motion of a satellite whose center of mass is following a circular orbit is considered, and the orientation of the frame Ox1y1z1 with respect to the orbital coordinate system is described by the Euler angles Ψ, ϑ, φ (Ψ is the precession angle and ϑ is the nutation angle, and φ is the proper motion angle).

TL;DR: By micro-spark erosion, a technique developed at as mentioned in this paper, tools for microminiaturization can be made with high precision (1 µm) and high surface smoothness (0.1 - 0.5 µm).

TL;DR: In this article, the authors derived the dynamic equations for the motion of satellites with passive and semi-passive attitude stabilization, and analyzed the resulting time-varying linear systems.

TL;DR: In this paper, it is shown that it is desirable both from the point of view of the pilot and also for convenience in the design of automatic control facilities that the demand response of the aeroplane be made to have a specified, or model, form over the entire flight envelope.

TL;DR: In this paper, the bond strength of aluminium and gold wires welded on various evaporated layers on glass substrates and on silicon surfaces was measured and the tests indicate good reproducibility.

TL;DR: In this paper, the characteristics of man as a part of a vehicle control loop are studied within the context established by the potential roles of the astronaut in guidance and control of the Saturn V launch vehicle.

TL;DR: The first satellite to achieve passive gravity-gradient attitude stabilization was the satellite 1963-22A by using a combination of a lossy spring and magnetic hysteresis rods as mentioned in this paper.

TL;DR: In this paper, a method for determining search limit cycle frequency and magnitude in single dimensional optimalizing (peak holding) systems is developed, which is based upon a single describing function (DF) of the logic circuitry, the parameter adjustment integrator, and the performance criterion nonlinearity.

TL;DR: In this paper, the attitude control of a satellite which is in a steady orbit around the earth is investigated. And the optimal switching policy of the control functions is investigated, and the minimum fuel or energy consumption is determined for various initial states.

TL;DR: This paper demonstrates how an effective solution to the difficulties in preparing computer programs for the complex Apollo missions is achieved with a combination of appropriate programming techniques and computer design.

TL;DR: In this paper, the pilot has to control a special value according to the display of the actual value and command value in order to guide and control an aircraft, and this value can be expressed as a command value.

TL;DR: In this paper, the authors make a study of the optimum three-dimensional attitude control of a spacecraft, where the stabilization is accomplished by two pairs of reaction jets, one pair of which is fixed in the vehicle so as to produce a torque about the axis of symmetry, and the second pair is mounted in a Cardan suspension and can produce torque about an arbitrary axis perpendicular to the symmetry axis.