Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 47 for “"Continuous systems"”.
-
The application of impact dampers to continuous systems
… application of impact dampers to two types of continuous systems, a simply supported and a clamped beam. Previous efforts have included the effect of impact dampers on single degree of freedom and other systems with finite numbers of degrees of freedom.</p> <p>Experimental models were tested in …
-
An Analysis of Stability Margins for Continuous Systems
When designing or reviewing control systems, it is important to understand the limitations of the system's design. Many systems today are designed using numerical methods. Although the numerical model may be controllable, stabilizable, or stable, small perturbations of the system parameters can …
-
The response of continuous systems to random noise fields
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1955.
-
The Uniformly Tapered Circular Beam as a Dynamic Vibration Absorber.
… of these single degree-of-freedom subsystems is that their natural frequencies are set equal to the frequency of sinusoidal excitation of the primary system which is to have its vibration reduced or eliminated.It appears that Vance and Woodward, and, were the first to utilize …
-
Solution Techniques for Large Eigenvalue Problems in Structural Dynamics
… eigenvalues and eigenvectors of large algebraic systems. In particular, the methods developed are applicable to finding the natural frequencies and modes of vibration of large structural systems such as frames or continuous systems discretized in some way.
-
A study of the growth and aggregation of calcium oxalate monohydrate / by Allan Sidney Bramley.
… in metastable saline solutions using batch and continuous systems. The physical chemistry of calcium oxalate mono-hydrate in aqueous solutions is considered. A tubular crystalliser to be used as an in vitro system is described.
-
Uncertainty Quantification in Dynamic Problems With Large Uncertainties
… of accuracy and computational efficiency. In systems with large uncertainties, the above approach does not work. Two Spectral Stochastic Finite Element Method (SSFEM) algorithms are developed to solve stochastic eigenvalue problems using Polynomial chaos. Presently, the approaches are …
-
Opial's Inequality on Time Scales and an Application
… on time scales (which unifies discrete and continuous systems), in this project we give some basic Opial type dynamic Inequalities. We discuss the background developed for Opial Inequalities which have many important applications both in the continuous and discrete cases in many areas of …
-
Opial's Inequality on Time Scales and an Application
… on time scales (which unifies discrete and continuous systems), in this project we give some basic Opial type dynamic Inequalities. We discuss the background developed for Opial Inequalities which have many important applications both in the continuous and discrete cases in many areas of …
-
On Diamond-Alpha Dynamic Equations and Inequalities
… on time scales (which unifies discrete and continuous systems), in this project we give some of the basics of the extension of the theory to the combined delta (forward) and nabla (backward) derivatives. In this set up the newly developed theory of diamond-alpha derivatives are analyzed …
-
Discrete Wave Propagation In Quadratically Nonlinear Media
… unique diffraction properties with no analogy in continuous systems. Recently nonlinear discrete optics has attracted a growing interest, triggered by the observation of discrete solitons in AlGaAs waveguide arrays reported by Eisenberg et al. in 1998. So far, the following experiments involved …
-
Response of periodic structures
… V, an attempt is made to simulate certain continuous systems by periodic structures. The algorithm as developed in chapter I is now adapted to the treatment of continuous systems. The method is capable of deriving the response of damped and undamped systems subject to harmonic distributed …
-
The relationship of glycolytic/gluconeogenic intermediates in brewing yeast (Saccharomyces uvarum) fermentations to growth
… industrial impact is realised for fermentation systems which may limit yeast growth, eg. continuous systems, use of pressure and, particularly, systems utilizing immobilised cells.
-
Studies of Phase Inversion and Ambivalence in Liquid-Liquid Systems.
… determining which phase is dispersed in batch or continuous systems, and studies of phase inversion have been reviewed. A mathematical model has been developed to predict the limits of phase inversion. The model is based on the collision frequency and coalescence frequency of agitated dispersions …
-
Model predictive control of timed continuous petri nets
… addresses the optimal control problem of timed continuous Petri nets. The theory of Model Predictive Control (MPC) is first discussed. Then continuous Petri nets (PN) are introduced as a powerful tool for modelling, simulation and analysis of discrete event/continuous systems. Their useful …
-
Time optimal control for asymptotic tracking of linear systems with input saturation
… some properties for a class of linear systems with input saturation, and design composite nonlinear feedback controllers. We have explored the problem of asymptotic time optimal tracking for a class of linear system with actuator nonlinearities. A formula on the optimal settling time is …
-
Monitoração de sistemas mecânicos pela assinatura decrescimento aleatório
… the detection of failures in linear mechanical systems is studied together with its sensitivity to the variations of measurement parameter such as, accelerometer position, frequency range, threshold level, number of samples. A continuous system consisting of a cantilever beam excited at its end …
-
A Newton Method For The Continuation Of Invariant Tori
… of this method is to locate invariant tori of continuous systems. These tori occur for continuous dynamical systems having quasiperiodic orbits in state space. The discretization of the continuous system in terms of a map is accomplished in terms of its flow function. Results for …
-
A Theoretical and Experimental investigation of Nonlinear Vibrations of Buckled Beams
… to determine approximate solutions of nonlinear continuous systems. Recently, it has been proved that finite-degree-of-freedom Galerkin-type discretization procedures applied to some distributed-parameter systems may fail to predict the correct dynamics. By contrast, direct procedures yield …
-
Constrained Optimization on SO(3), via Pseudospectral Collocation
… direct transcription method that discretizes continuous systems with spectral accuracy and high fidelity while requiring relatively few collocation points. The special orthogonal group, SO(3), is both a Lie group and a manifold, and thus demands on-manifold optimization techniques to preserve …
Page 1 of 3