Time Delay Systems
Mostrando 1-12 de 63 artigos, teses e dissertações.
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1. Optimization of the Size of Thread Pool in Runtime Systems to Enterprise Application Integration: A Mathematical Modelling Approach
RESUMO As empresas buscam alternativas tecnológicas que proporcionem competitividade para seus processos de negócios. Uma delas é a integração de plataformas, ferramentas de software que constroem soluções de integração, que permitem que os diferentes aplicativos que compõem o ecossistema de software trabalhem de forma síncrona e que novas aplica�
TEMA (São Carlos). Publicado em: 03/06/2019
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2. ANALYTICAL COMPARISON OF THE PERFORMANCE OF ADAPTIVE MODULATION AND CODING IN WIRELESS NETWORK UNDER RAYLEIGH FADING
Abstract In this paper, an analytic comparison between adaptive modulation (AdM) and adaptive Forward Error Correction (AdFEC) in wireless network telecommunication systems is performed. Through the Gilbert-Elliott model's, the Packet Error Rate (PER) is calculated and both the throughput and the delay, for different modulations and error correction capacity
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-09
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3. Simple Formulae for Control of Industrial Time Delay Systems
Abstract Control of time delay integrating systems is a challenging and on-going research. In this paper a new structure for control of stable and integrating time delay systems is presented. The control design process is as simple as selection of some constant gains, for which simple formulae are introduced. The design methods are derived analytically, whil
Lat. Am. j. solids struct.. Publicado em: 2016
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4. Method to Determine the Electrical Energy for Ignition of Electro-Explosive Devices
ABSTRACT: During field trials, it was observed that the delay of ignition of electro-explosive devices (EED) depends on ratings of power supplies or dynamo and also on the firing cable lengths. The change in ignition delay of EEDs due to altered supplied current will detoriate the repeatability of sequence of actions in time-critical armament applications. I
J. Aerosp. Technol. Manag.. Publicado em: 2015-09
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5. Control of input delayed pneumatic vibration isolation table using adaptive fuzzy sliding mode
AbstractPneumatic isolators are promising candidates for increasing the quality of accurate instruments. For this purpose, higher performance of such isolators is a prerequisite. In particular, the time-delay due to the air transmission is an inherent issue with pneumatic systems, which needs to be overcome using modern control methods. In this paper an adap
Lat. Am. j. solids struct.. Publicado em: 2015-08
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6. QoS management in smart grids: a Markovian approach
In Smart Grids, a variety of new applications are available to users of the electrical system (from consumers to the electric system operators and market operators). Some applications such as the SCADA systems, which control generators or substations, have consequences, for example, with a communication delay. The result of a failure to deliver a control mes
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2014-12
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7. Coplanar waveguide-fed ultra-wideband planar antenna with WLAN-band rejection
A compact coplanar waveguide (CPW)-fed ultra-wideband (UWB) antenna is proposed with band-notched characteristic. The antenna has compact size of 29 x 31 mm². A novel wide polygon-slot is inserted on the antenna to obtain good impedance matching and wide bandwidth. A tapered radiating patch is placed inside the polygon-slot. An embedded C-slot in the radiat
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-06
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8. Controle por modo deslizante para sistemas não-lineares com atraso. / Sliding mode control for nonlinear systems with time delay.
Nesta Dissertação são propostos dois esquemas de controle para sistemas não-lineares com atraso. No primeiro, o objetivo é controlar uma classe de sistemas incertos multivariáveis, de grau relativo unitário, com perturbações não-lineares descasadas dependentes do estado, e com atraso incerto e variante no tempo em relação ao estado. No segundo, d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2012
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9. Proposal of Fuzzy Control Based on Robust Stability Criteria: An approach in terms of transfer function applied to continuos time dynamic systems with time delay. / PROPOSTA DE CONTROLE BASEADO EM CRITÉRIO DE ESTABILIDADE ROBUSTA: UMA ABORDAGEM EM TERMOS DE FUNÇÃO DE TRANSFERÊNCIA APLICADA A SISTEMAS DINÂMICOS NO TEMPO CONTÍNUO COM ATRASO
Nesta dissertação é proposta uma metodologia de controle PID nebuloso robusto baseado nas especificações das margens de ganho e fase, para sistemas dinâmicos com atraso, no domínio do tempo contínuo. Um modelo nebuloso com estrutura Takagi-Sugeno é utilizado para representar o sistema dinâmico a ser controlado. Assim, a partir dos dados de entrada
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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10. An FET-based microwave active circuit with dual-band negative group delay
Recent studies proved that certain electronic active circuits are capable to exhibit simultaneously a negative group delay (NGD) and amplification in microwave frequency bands. One of the simplest topologies generating this counterintuitive NGD function effect is formed by a series RLC-network in cascade with a transistor. By using this cell, similar to the
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2011-12
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11. Synthesis of Controllers for Continuous-Time Delay Systems with Saturating Controls via LMI's
The stabilization of linear continuous-time systems with time delay in the state and subject to saturating controls is addressed. Sufficient conditions obtained via a linear matrix inequality (LMI) formulation are stated to guarantee both the local stabilization and the satisfaction of some performance requirements. The method of synthesis consists in determ
Publicado em: 2011
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12. Delay-dependent anti-windup loops for enlarging the stability region of time delay systems with saturating inputs
Publicado em: 2011