Master's Dissertation
DOI
https://doi.org/10.11606/D.18.2008.tde-19012011-114940
Document
Author
Full name
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2008
Supervisor
Committee
Felicio, Luiz Carlos (President)
Franzotti, Celso Luiz
Giacomo, Benedito di
Title in Portuguese
Modelagem e simulação da dinâmica de uma bomba de palhetas auto-compensada por pressão do tipo controle integral
Keywords in Portuguese
Bomba de palhetas
Controle integral
Modelo dinâmico
Simulação computacional
Abstract in Portuguese
Title in English
Modeling and simulation of the dynamic behavior of vanetype pressure compensated hydraulic pumps with integral-type control
Keywords in English
Computer simulation
Dynamic behavior
Integral-type control
Vane-type pump
Abstract in English
Despite the hydraulic systems are among the oldest means of energy transmission used by man, currently they are receiving special attention in scientific researchs. The search for greater control of energy generated spurred an increase in the use and application of technology and new research such systems. Besides high capacity of control and precision, sensitivity, stiffness, speed, strength, power hydraulic systems give a complete set of properties allowing their wide applications in many different areas. But the non-linearity of the dynamics of its parts is the modeling of hydraulic system is complex. Knowing that pumb is the most important part of the hydraulic circuits, this study presents a mathematical model and computer stimulation of a vane-type pump offset by pressure with integral control type. The theoretical model is based on the application laws of physics in four parts of the pumb: Newton's law of the spool valves and the coupling of the piston ring and with the Law of Conservation of Mass in volumes of controlling the pressure, and the Po inside if the carcass (pressure in the slave cylinder), Pcc. The behavior of the system was checked with the application of a hydraulic load (request) type entry step. Thus the pressure, leaving the system, presents a transient at the beginning of the simulation and quickly enter into arrangements. At the moment in which the hydraulic load transient operates the back and then enter into arrangements with the same value as presented before the step, specific behavior of systems with full control type.

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MFMFerreira.pdf (4.21 Mbytes)
Publishing Date
2011-02-07

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