نتایج جستجو برای: controlled switching

تعداد نتایج: 450655  

2011
K. Satyanarayana J. Amarnath A. Kailasa Rao

In this paper a Near State Pulse Width Modulation (NSPWM) algorithm with reduced switching frequency is presented for vector controlled induction motor drives for reduced common mode voltage/currents. The proposed algorithm utilizes a group of three neighbor voltage vectors to construct the reference voltage space vector. In the proposed algorithm in each sector any one of the phases is clamped...

2011
Shuichi SUMITA

This paper presents a queueing network model for common memory access contention and access contention to common data that cannot be referenced by more than one processor in a multiprocessor controlled switching system. The model takes into account the inter-dependence between these types of access contention, which is important for evaluating the performance of a single-bus multiprocessor syst...

2017
Limin Xiang Julio L. Palma Yueqi Li Vladimiro Mujica Mark A. Ratner Nongjian Tao

Extensive evidence has shown that long-range charge transport can occur along double helical DNA, but active control (switching) of single-DNA conductance with an external field has not yet been demonstrated. Here we demonstrate conductance switching in DNA by replacing a DNA base with a redox group. By applying an electrochemical (EC) gate voltage to the molecule, we switch the redox group bet...

2010
Younghee Han Raymond A. de Callafon Jorge Cortés J. Jaffe

This paper analyzes the dynamic properties of a submersible drogue for which buoyancy control is implemented by a flexible membrane and pneumatic actuation. It is shown how a simple on/off switching algorithm tuned on the basis of depth measurements and an estimated depth velocity can be used to achieve accurate depth control with small fluctuations. The switching control makes the pneumaticall...

2014
Chin-Chun Tsai Yi-Chi Lee Hsiang-Chen Chui

New scheme of a real-time all-optical switching (AOS) was demonstrated as the fluorescence signal of cesium twophoton transition (TPT) with the control field. This work explored the optical phenomenon of the TPT with the control field that shares a common excited state, in which the TPT fluorescence is quenched under the control field intensity. The strong stimulated emission due to the control...

2006
Frank Pasemann

The activity dynamics of recurrent neural networks can exhibit deterministic chaos due to the nonlinear transfer functions. Chaotic attractors are winded around infinitely many unstable periodic orbits. Each can be stabilized by a feedback control. In the present article we explore the flexibility of the chaotic dynamics of a recurrent neuromodule and construct a neural controller which is able...

2004
Yi-Chang Lu Jae Wook Kim Nobuhiko Nakano David Colleran Patrick Yue Robert W. Dutton

Frequency and timing of digital clocks, digital switching activities, and number of transistors in digital blocks are the key behavior-level parameters to model switching noise generated by complicated digital systems. In this paper, a Digital Noise Emulator (DNE) is implemented on a test chip to study how these parameters impact the performance of a ring-typed-VCO-based PLL. In addition, the p...

2009
A. Ebner

Theoretically, controlled switching taking into account the residual flux is able to fully eliminate inrush currents. Due to non-idealities in the field (closing time scatter, residual flux measurement uncertainty) that significantly affect the performance of controlled switching, inrush currents of 1.0 pu must be tolerated. To calculate the maximum acceptable tolerances of both nonidealities i...

2011
Virginia Ivanov Maria D. Brojboiu Sergiu Ivanov

The controlled switching can be applied to any type of commutations. Now there are dedicated controllers which are used more often for the switching of the transport and distribution lines, of the small inductive loads, of the capacitors batteries, or the energizing the no load power transformers. The paper presents a microcontroller (8051 family) based system used to controlled switching of va...

Journal: :Physical review letters 2013
Jean-Pierre Gauyacq Simeón Moisés Yaro Xavier Cartoixà Nicolás Lorente

The controlled switching between two quasistable Néel states in adsorbed antiferromagnetic Fe chains has recently been achieved by Loth et al. [Science 335, 196 (2012)] using tunneling electrons from an STM tip. In order to rationalize their data, we evaluate the rate of tunneling electron-induced switching between the Néel states. Good agreement is found with the experiment, permitting us to i...

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