Journal of Fluids Engineering: Recent submissions
Now showing items 1581-1600 of 9024
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Approximate Method for Calculating the Time Response in Linear, Time-Varying, and Nonlinear Automatic Control Systems
(The American Society of Mechanical Engineers (ASME), 1961)In past years many methods have been developed for calculating the time response in automatic control systems. In this paper an improved, approximate method for calculating the transient response ... -
New Results in Linear Filtering and Prediction Theory
(The American Society of Mechanical Engineers (ASME), 1961)A nonlinear differential equation of the Riccati type is derived for the covariance matrix of the optimal filtering error. The solution of this “variance equation” completely specifies the optimal ... -
Kinetic Lyapunov Function for Stability Analysis of Nonlinear Control Systems
(The American Society of Mechanical Engineers (ASME), 1961)A kinetic Lyapunov function is a Lyapunov function of the first derivatives of the state variables. Its use leads to a sufficient condition for the asymptotic stability in the large of a ... -
Design of Optimum Multivariable Control Systems
(The American Society of Mechanical Engineers (ASME), 1961)The design of optimum controllers is considered for processes which are described by linear differential equations with one or more independent forcing terms. After presentation of a general ... -
Reduction of Dimensionality, Dynamic Programming, and Control Processes
(The American Society of Mechanical Engineers (ASME), 1961)A major difficulty in the way of a successful systematic approach to the study of control processes by way of the theory of dynamic programming is the occurrence of processes having state ... -
Investigation of Periodic Modes of Sampled-Data Control Systems Containing a Saturating Element
(The American Society of Mechanical Engineers (ASME), 1961)A discrete sequence approach is presented in this paper for investigating the possible modes of sampled-data control systems containing a saturating element. This method enables the investigator ... -
Pulse-Width Relay Control in Sampling Systems
(The American Society of Mechanical Engineers (ASME), 1961)The use of pulse-width control for the on-off regulation of systems subject to sampling is investigated in this paper. The inherent inability of simple on-off control to achieve accurate, or ... -
The Optimum Response of Second-Order, Velocity-Controlled Systems With Contactor Control
(The American Society of Mechanical Engineers (ASME), 1961)This paper is concerned with the optimum control problem for plants described by second-order differential equations with constant coefficients and with velocity control. Emphasis is placed on ... -
Solution Space Approach to Optimal Control Problems
(The American Society of Mechanical Engineers (ASME), 1961)In this paper, we study the control of the dynamic system governed by the matrix differential equation, ẋ = Fx + Du , x (0) = −c , where the input vector u is constrained in amplitude. ... -
Dynamic Synthesis of Higher-Order, Optimum Saturating Systems
(The American Society of Mechanical Engineers (ASME), 1961)A new technique for the synthesis of optimum switching criteria for higher-order saturating systems is investigated in this paper. Basically, the technique consists of generating a linear switching ... -
A Study of Theories of Fracture Under Combined Stresses
(The American Society of Mechanical Engineers (ASME), 1961)Experimental data are presented for a cast nodular iron and for high-silicon cast iron materials which represent limiting conditions of ductility in a test of fracture theories. Data of other ... -
Fracture of Flat and Curved Aluminum Sheets With Stiffeners Parallel to the Crack
(The American Society of Mechanical Engineers (ASME), 1961)The mode of crack propagation and failure in relatively large 2024-T3 aluminum sheets reinforced with stiffeners parallel to the crack direction has been investigated. Curved specimens with a ... -
Crack Propagation in Thin Metal Sheet Under Repeated Loading
(The American Society of Mechanical Engineers (ASME), 1961)An experimental and analytical investigation was undertaken to study the fundamental factors of crack propagation in a thin metal sheet under repeated axial loading. Sheet specimens of 2024-T3 ... -
Microplastic Strain Hysteresis Energy as a Criterion for Fatigue Fracture
(The American Society of Mechanical Engineers (ASME), 1961)In this paper an energy criterion for fatigue failure is postulated. Microplastic strain hysteresis energy is considered to be an index for fatigue damage. On this basis, a relation is developed ... -
Energy Versus Stress Theories for Combined Stress—A Fatigue Experiment Using a Rotating Disk
(The American Society of Mechanical Engineers (ASME), 1961)An experiment is described in which the strain energy at the critical location for fatigue failure is maintained constant while the stresses on a given plane of the material at the same ... -
Minimum Toughness Requirements for High Strength Sheet Steel
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Discussion: “Preliminary Design of a Roll-Stabilization System for a Ship” (Stallard, David V., 1961, ASME J. Basic Eng., 83, pp. 125–130)
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Discussion: “Approximate Method for Calculating the Time Response in Linear, Time-Varying, and Nonlinear Automatic Control Systems” (Naumov, B., 1961, ASME J. Basic Eng., 83, pp. 109–117)
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A Comparison of the Multi-Venturi Meter to Other Low-Loss Fluid Meters
(The American Society of Mechanical Engineers (ASME), 1973)A comparison of the multi-venturi type meter with other fluid meters has been made. A multi-venturi type meter is one having two or more venturis cascaded in such a manner that the discharge ... -
Velocity Field Induced by Singularities in a Reaction Turbine Fluid Filament of Varying Thickness Approximated by Hyperbolic Law
(The American Society of Mechanical Engineers (ASME), 1973)The flow in a hydraulic reaction turbine can be analyzed by considering the blade surfaces to be surfaces of discontinuity. For such an analysis the velocity field induced by a system of ...