نتایج جستجو برای: electromechanical device
تعداد نتایج: 684387 فیلتر نتایج به سال:
In modern computing, the Boolean logic operations are set by interconnect schemes between the transistors. As the miniaturization in the component level to enhance the computational power is rapidly approaching physical limits, alternative computing methods are vigorously pursued. One of the desired aspects in the future computing approaches is the provision for hardware reconfigurability at ru...
This work investigates the effects of the STATCOM (Static Synchronous Compensator), a FACTS (Flexible AC Transmission Systems) device, on small-signal power system angle stability. This investigation is carried out for a single machine connected to an infinite bus via a loss-less transmission line. The study is based on investigation of the eigenvalues of the linearized power system model in th...
Myoelectrically controlled prostheses are a class of assistive device that use electrical signals generated by muscle activation. These electromyographic (EMG) signals are used to control one or more electromechanical actuators that move prosthetic joints. Myoelectric control signals are typically measured with electrodes on the surface of the skin, with one pair of electrodes over each muscle ...
Field studies have demonstrated that it is possible to evaluate the state of many shipboard systems by analyzing the electrical power that is drawn by electromechanical actuators (Ramsey, 2005; DeNucci, 2005; Greene, 2005). This paper describes how a device known as a nonintrusive load monitor (NILM) uses electrical power measurements to detect the presence of leaks in shipboard cycling systems...
Suspended single-walled carbon nanotube devices comprised of high-quality electrical contacts and two electrostatic gates per device have been prepared. Compared to nanotubes pinned on substrates, the suspended devices exhibit little hysteresis related to environmental factors and act as cleaner Fabry-Perot interferometers or single-electron transistors. The high-field saturation currents in th...
A continuity equation is developed to model the evolution of a swarm of selfpropelled ‘smart dust’ devices in heliocentric orbit driven by solar radiation pressure. These devices are assumed to beMEMs-scale (micro-electromechanical systems) with a large areato-mass ratio. For large numbers of devices it will be assumed that a continuumapproximation can be used to model their orbit evolution. Th...
Current interest in two-dimensional (2D) materials is driven in part by the ability to dramatically alter their optoelectronic properties through strain and phase engineering. A combination of these approaches can be applied in quasi-2D transition metal dichalcogenide (TMD) monolayers to induce displacive structural transformations between semiconducting (H) and metallic/semimetallic (T') phase...
Quantum-confined devices that manipulate single electrons in graphene are emerging as attractive candidates for nanoelectronics applications. Previous experiments have employed etched graphene nanostructures, but edge and substrate disorder severely limit device functionality. Here we present a technique that builds quantum-confined structures in suspended bilayer graphene with tunnel barriers ...
Effective problem solving requires building adequate models that embody the simplifications, abstractions, and approximations that parsimoniously describe the relevant system phenomena for tbe task at hand. Compositional modeling is a framework for constructing adequate device models by composiqg model fragments selected from a model fragment library. While model selection using compo,sitional ...
Ventilator care is synonymous with Intensive care. These devices are electromechanical and as such can fail. Most failures without patient incident, injury, harm. The FDA requires manufacturers who learn of malfunction, injury or death while operating their product to report the agency via Manufacturer User Facility Device Experience database. I reviewed 500 recent events reported found an incr...
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