Fault Tolerant Control
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Reducing the Effects of Inaccurate Fault Estimation in Spacecraft Stabilization
ABSTRACT Reference Governor is an important component of Active Fault Tolerant Control. One of the main reasons for using Reference Governor is to adjust/modify the reference trajectories to maintain the stability of the post-fault system, especially when a series of actuator faults occur and the faulty system can not retain the pre-fault performance. Fault
J. Aerosp. Technol. Manag.. Publicado em: 2017-12
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2. Passive Fault-Tolerant Control of an Underactuated Re-Entry Capsule
ABSTRACT: The design of a passive fault-tolerant control for an underactuated re-entry capsule is considered in this paper; however, the control input of the capsule is failed. At first, kinematics and dynamics of the capsule are studied and modeled, and adaptive control law is used to design a passive controller for the control of the capsule. The guidance
J. Aerosp. Technol. Manag.. Publicado em: 2017-12
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3. An Asynchronous Interface with Robust Control for Globally-Asynchronous Locally-Synchronous Systems
ABSTRACT: Contemporary digital systems must necessarily be based on the "System-on-Chip" (SoC) concept. Especially in relation to the aerospace industry, these systems must overcome some additional engineering challenges concerning reliability, safety and low power. An interesting style for aerospace SoC design is the GALS (Globally Asynchronous, Locally Syn
J. Aerosp. Technol. Manag.. Publicado em: 2013-03
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4. Fault-tolerant state estimation of linear Gaussian systems subject to additive faults
Owing to the need for the satisfaction of attributes such as safety, maintainability, and reliability in modern critical engineering devices, the design of automatic feedback control systems has increasingly demanding fault-tolerant methods. In particular, if the system states cannot directly be measured by the available suite of sensors, a fault-tolerant st
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2011
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5. Arquitetura modular de processador multicore, flexível, segura e tolerante a falhas, para sistemas embarcados ciberfísicos. / Modular multicore processor architecture, flexible, securi and fault tolerant, to embedded cyber-physical systems.
Cyber-physical Systems (CPS) are systems where there is an union between computing and physics. The CPS will be used in several areas, forming a new era of systems or devices and could be anywhere, being used by anyone and anything. Applications for CPS include highly reliable medical systems and devices, traffic control and security, advanced automotive, pr
Publicado em: 2010
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6. Controle tolerante a falhas usando redes neurais adaptativas / Fault tolerant control using an adaptive neural network
Esta monografia apresenta uma arquitetura para aplicação de Controle Tolerante a Falhas, seguindo uma abordagem de dupla malha de realimentação. A primeira malha apresenta um controlador regular, e a segunda segue uma estratégia de controle adaptativa baseada em rede neural, que faz uso de um mecanismo de ajustes de pesos em tempo real. O primeiro contr
Publicado em: 2010
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7. Controle de movimentos coordenados de robôs móveis quando os robôs assumem a liderança de maneira aleatória / Control of coordinated movements of mobile robots when the robots take the lead in a random
This dissertation proposes a study on the automatic control of dynamic systems to the problem of coordination of mobile robots. The coordinated motions are performed with the robots following a leader, and any robot of the formation can assume the leadership randomly. The robots exchange informations according to a pre-specified communication directed graph
Publicado em: 2009
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8. Controle tolerante com reconfiguração estrutural acoplado a sistema de diagnóstico de falhas
A exigência do aumento da disponibilidade de plantas industriais é cada vez mais presente no parque industrial atual. A disponibilidade representa a manutenção satisfatória da operação da planta mesmo após o aparecimento de falhas. Um sistema com essas características é definido como um sistema tolerante a falhas. Para a concretização de um siste
Publicado em: 2008
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9. A policy-based architecture for fault management in optical networks / Uma arquitetura baseada em politicas para gerencia de falhas em redes opticas
In these last few years, optical networking technology has been considered as a solution for bottlenecks found in today s networks. Each optical fiber is capable to have from ten to hundreds of optical channels that operate at rates from 51 Mb/s to ten of terabits per second. These channels are important elements in the composition of lightpaths, the default
Publicado em: 2006
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10. Detecção identificação e reconfiguração de falhas múltiplas em sensores de sistemas lineares invariantes no tempo / Detection, identification and reconfiguration of multiple faults in sensors of linear time invariant systems
This work has as objective to develop a technique for the detection, identification and reconfiguration of multiple faults in sensors of linear time invariant systems using the analytical redundancy approach. It is the result of the study of several fault detection and identification techniques found in the literature, that use the state observer method due
Publicado em: 2005
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11. Tolerância a falhas adaptativa para robôs móveis com arquitetura híbrida
This work presents a novel architectural design methodology, which enables weaving fault-tolerance into hybrid architecture control frameworks. The beneficial aspects fostered by fault tolerance greatly surpass the overhead in project development. Dataflow processing paradigm is based on functions and abstract data elements, providing a simple, yet powerful,
Publicado em: 2004
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12. Nonlinear H INFINITO control of underactuated robot manipulators / Controle H INFINITO não linear de robôs manipuladores subatuados
This work presents the development, implementation and analysis of nonlinear H control techniques applied to underactuated manipulators, under parametric uncertainties and external disturbances. At the first part, two approaches are considered for underactuated individual manipulators. The first approach consists in representing manipulators as nonlinear
Publicado em: 2004