HYDRAULIC BENCH FOR ELECTRO-HYDRAULIC SERVO-VALVES AND SERVO-ACTUATORS
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2010, Vol 34, Issue 34
Abstract
This paper presents a hydraulic bench for electro-hydraulic servo-valves and servo-actuators testing. This bench was realized in the laboratory of the Avionics Division of the Faculty of Electrical Engineering. For the hydraulic servo-actuators, it is possible to study the time response for different test signals and the frequency characteristics in sinusoidal regime. The hydraulic bench construction allows also the study of different controller types, either P, I, D, or compound of these types, which are already provided in the construction, either an external controller of another type. The external controller may be coupled to the bench without any other changes, to the front panel terminals. So, the hydraulic this hydraulic test bench may be a useful tool in the research activity in the hydraulic servo-actuators and automation domain. For the servo-valves it is possible to study the stationary characteristics – dependence between the coil current and flow ratio and the dependence between feeding pressure and flow ratio. Because the components provided between the servo-valve ports it is necessary to use a correction calculus implemented in LabView in order to eliminate the pressure drop on these components. Due to the skills provided by LabView, the acquisition scheme (not presented in this paper) is very simple to be implemented an may incorporate the correction calculus, in order to obtain directly the servovalve characteristics. The entire hydraulic and electric schemes are conceived and realized in the Avionics laboratory of the Electrical Engineering Faculty from Craiova.
Authors and Affiliations
Liviu DINCA, Mihai LASCU-COTOFANA, Mihaita IVAN, Iosif BUDAU, Dumitru SARBU
Keywords
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HYDRAULIC BENCH FOR ELECTRO-HYDRAULIC SERVO-VALVES AND SERVO-ACTUATORS
This paper presents a hydraulic bench for electro-hydraulic servo-valves and servo-actuators testing. This bench was realized in the laboratory of the Avionics Division of the Faculty of Electrical Engineering. For the h...