The large amplitude steady state forced motion of a simply supported beam with ends restrained to remain a fixed distance apart is represented by a series of linear normal modes. The validity of the assumption of single mode response is examined by investigating the stability of the unforced modes when a single mode is forced. The equations include the effects of an initial axial load and numer...

In this paper we analyze the trade-offs between energy and throughput for links in a wireless sensor network. Our application of interest is one in which a number of low-powered sensors need to wirelessly communicate their measurements to a communications sink, or destination node, for communication to a central processor. We focus on one particular sensor source, and consider the case where th...

This paper proposes a novel phase-shifted zerovoltage and zero-current-switching (ZVZCS) pulsewidth modulation full-bridge converter, which realizes ZVS for the leading leg and ZCS for the lagging leg. A blocking capacitor is added in series with the primary winding of the transformer to make the primary current decay to zero during zero state to ensure ZCS for the lagging leg. In order to prev...

The cybernetic control and management of production can be improved by an understanding of the dynamics of the supply chains for the production organizations. This paper describes an attempt to better understand the dynamics of a linear supply chain through the application of the normal mode analysis technique of physics. A model is considered in which an organization’s response to a perturbati...

The distributed model predictive control (MPC) framework described in [38] is extended to handle output feedback. A distributed estimator design strategy is proposed. Each estimator is stable and uses only local measurements to estimate subsystem states. The feasible cooperation-based MPC (FC-MPC) algorithm presented in [38] is used for distributed regulation. Feasibility and closed-loop stabil...

‘Big’ history is the time between the Big Bang and contemporary technological life on Earth. The stretch of big history can be considered as a series of developments in systems that manage ever-greater levels of energy flow, or thermodynamic disequilibrium. Recent theory suggests that step-wise changes in the work accomplished by a system can be explained using steady-state non-equilibrium ther...

We present an analysis of the steady-state operation of a two-element coupled-cavity laser near a mode hop. The equations of motion for the two cavities and two relevant modes of a longitudinally coupled-cavity laser are reduced to a system of nondimensional nonlinear ordinary differential equations which describe a general two-element laser. The equations are then solved and the stability of t...

Due to their central role in our classical intuition of the physical world and their potential for interacting with the gravitational field, mechanical degrees of freedom are of special interest in testing the nonclassical predictions of quantum theory at ever larger scales. The projection postulate of quantum theory predicts that, for certain types of measurements, continuously measuring a sys...

An optimization approach to control reconnguration, based on eigenstructure assignment , for control systems with output feedback is presented. The emphasis is on the recovery of the nominal closed-loop performance, which is determined by the closed-loop eigenvalues and eigenvectors. The proposed scheme preserves the max(r; q) most dominant eigenvalues of the nominal closed-loop system and dete...

A new approach for the analysis of high-frequency broadband reverberant sound fields in rooms with diffuse reflection boundaries is described. Depending on shape, source location, and the distribution of wall absorption, rooms exhibit spatial variation in steadystate mean-square pressure and also spatial dependence of decay time characteristics. It is shown that the room boundaries can be repla...