Hydraulic Servo Systems
Mostrando 1-7 de 7 artigos, teses e dissertações.
-
1. An adaptive fuzzy dead-zone compensation scheme and its application to electro-hydraulic systems
The dead-zone is one of the most common hard nonlinearities in industrial actuators and its presence may drastically compromise control systems stability and performance. Due to the possibility to express specialist knowledge in an algorithmic manner, fuzzy logic has been largely employed in the last decades to both control and identification of uncertain dy
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-03
-
2. A fly-by-wire rudder control system design using multiobjective optimization.
This work aims to demonstrate an approach to design a fly-by-wire mobile surface control system for a commercial jet employing multiobjective optimization techniques. This approach consists on sizing a set of design parameters of the control system based on model simulation and response analysis coupled with optimization algorithms in a multiobjective design
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/03/2009
-
3. CONTROLE POR APRENDIZADO DE SISTEMAS SERVO: HIDRÁULICOS DE ALTA FREQÜÊNCIA / LEARNING CONTROL OF HIGH FREQUENCY SERVO: HYDRAULIC SYSTEMS
Hydraulic systems are used where relatively high forces and torques are required, or when high response speeds are necessary. They are used in industrial systems, robotics, movement simulators, automated plants, ore exploration, presses, and especially in fatigue testing systems. Fatigue tests are usually performed on servo-hydraulic systems, in order to pre
Publicado em: 2008
-
4. Controlador de posição linear hidro-pneumático. / Hydro pneumatic linear position controller.
Nessa pesquisa é apresentada uma inovação tecnológica em aplicações de controle de posição em máquinas e/ou dispositivos: o Controlador de Posição Linear Hidro- Pneumático. Para os casos nos quais têm-se grandes esforços combinados com pequenos deslocamentos, normalmente esse trabalho é feito com o uso de Sistemas Servo-Hidráulcos nos quais,
Publicado em: 2008
-
5. Análise e projeto de sistemas de controle para atuadores hidráulicos servo acionados : um estudo de caso
This work approaches the modeling problem of servo hydraulic position systems and analyzes the question of the project and application in this context of not conventional control systems. In such a way, an appropriate bench of tests is described with details, as much in functional terms as to the technology of its elements. This bench, is in PUCPR and here c
Publicado em: 2006
-
6. Modeling and identification of a fly-by-wire control system.
This work investigates the system identification and modeling techniques applied to a fly-by-wire system for pitch control of a commercial jet aircraft. The objective of the work is to build a model based on system identification techniques and generic modeling of the system, therefore using the "grey box" approach. The identification data was obtained from
Publicado em: 2005
-
7. Lubrificação ativa aplicada a mancais hibridos radiais
The stability of rotating systems supported by multirecess hydrostatic journal bearings is closely reIated to the dynamic characteristics of the bearing lubricant fluid film. The instability problems arise with the increase of the machine rotational speed, due to the bearing damping reduction and the increase of the joW Ilal cross coupling effect. An increas
Publicado em: 2003