نتایج جستجو برای: switching control

تعداد نتایج: 1386413  

In conventional direct torque control (DTC) of induction machines, undesirable flux and torque ripples are produced. These occur since non of the selected inverter's voltage vectors are able to generate the exact voltage required to produce the desired changes in the electromagnetic torque and stator flux linkage in most of the switching instances. In addition, when direct torque control is imp...

2011
Jutta Kray Julia Karbach Susann Haenig Christine Freitag

The key cognitive impairments of children with attention deficit/-hyperactivity disorder (ADHD) include executive control functions such as inhibitory control, task-switching, and working memory (WM). In this training study we examined whether task-switching training leads to improvements in these functions. Twenty children with combined type ADHD and stable methylphenidate medication performed...

افتخاری, کاوه, خیری فام, حسین, عباسیان, کریم,

We propose a novel two state and all-optical controllable switch using DIT, Kerr effect and interaction between quantum dots (QD) and quantum electrodynamics cavity (CQED). The two state and all-optical controllable switch is coupled to photonic waveguide from a rapid nonlinear environment (photonic crystal) and CQED. We consider the nano-crystal are doped to crystal photonic cavity as a 4-leve...

2008
Weicun Zhang Jin Young Choi

Based on virtual equivalent system concept and methodology, a unified analysis of the stability and convergence of switching multiple model adaptive control (MMAC) of linear time-invariant discrete plant is presented. The main results are expressed by three criteria. Two of them are applicable to switching MMAC systems with arbitrary control strategy, arbitrary parameter estimation algorithm an...

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...

2007
Animesh Nandi Aditya Ganjam Peter Druschel T. S. Eugene Ng Ion Stoica Hui Zhang Bobby Bhattacharjee

Many cooperative overlay multicast systems of diverse designs have been implemented and deployed. In this paper, we explore a new architecture for overlay multicast: we factor out the control plane into a separate overlay that provides a single primitive: a configurable anycast for peer selection. This separation of control and data overlays has several advantages. Data overlays can be optimize...

2014
Bin Hu Michael D. Lemmon

Leader-follower formation control is a widely used distributed control strategy that needs systems to exchange their information over a wireless radio communication network to attain and maintain formations. These wireless networks are often subject to deep fades, where a severe drop in the quality of the communication link occurs. Such deep fades inevitably inject a great deal of stochastic un...

Journal: :international journal of robotics 0
mohammad hasan ghasemi babol university of technology mohammad jafar sadigh isfahan university of technology

the large amount of computation necessary for obtaining time optimal solution for moving a manipulator on specified path has made it impossible to introduce an on line time optimal control algorithm. most of this computational burden is due to calculation of switching points. in this paper a learning algorithm is proposed for finding the switching points. the method, which can be used for both ...

Journal: :dental research journal 0
hadi salimi omid savabi farahnaz nejatidanesh

the platform switching (pls) concept was introduced in the literature in 2005. the biological benefits and clinical effectiveness of the pls technique have been established by several studies. in this article different aspects of pls concept are discussed. crestal bone loss, biologic width, and stress distribution in this concept are comprehensively reviewed. in this article the relative publis...

2009
Fernando N. N. Farias Rafael P. Esteves Waldir Aranha Moreira Junior Antonio Jorge Gomes Abelém Michael A. Stanton

This paper presents a proposal for dynamic control of Quality of Service (QoS) in optical networks based on optical burst switching (OBS) using a GMPLS control plane. In this proposal, monitoring agents are used to verify the QoS experienced by the burst classes and to deploy reactive mechanisms in order to guarantee absolute performance levels. Using GMPLS traffic engineering, these agents als...

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