EXPERIMENTAL DETERMINATION OF PARAMETERS DESCRIPTIVE OF MAGNETO-RHEOLOGICAL VALVE
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2011, Vol 35, Issue 35
Abstract
In this paper is presented an experimental test stand of rheological stop-valves. Rheological stop-valve structures are robust, simple in terms of constructive and easy to control. However, due to non-Newtonian fluid flow rheological, are difficult to model mathematically. Since many parameters of these valves are determined empirically, and depend very much on the constructive parameters, it is necessary to determine them experimentally. The paper also presents a stand designed, developed and tested for magneto-rheological stop valves. This is shown schematically speaking, constructive and programming. The stand allows the experimental determination of parameters valves, their dependence on the type of fluid used and the type rheological field excitation applied to the fluid. Determination of valve parameters can be made for any type of field excitation. Applied voltage generator may be continuous, can be generated with a constant frequency or a frequency dictated by the law of order. Applied voltage generator can also generated signal and PWM. It can be controlled manually or automatically, in terms of amplitude, pulse width and frequency. Although experimental work stand is used to determine parameters for magneto-rheological stop valve and test it allowed electro-rheological valves stop by changing the generator field excitation. At the end of the paper is presented an example set of results acquired for one of the valves tested.
Authors and Affiliations
Ileana VLADU, Ionel Cristian VLADU
Keywords
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