Performance Analysis Of A New Compact Magneto-Rheological Proportional Control Valve For Hydraulic Actuation Using FEM And Experimental Approach
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Date
2011-11
Authors
Salloom, Maher Yahya
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
One of the main parts in a hydraulic system is the directional control valve, which is needed in order to operate an hydraulic actuator. The magneto-rheological (MR) valve has been proven can replace hydraulic directional control valve for controlling hydraulic actuator by few researcher in the form of Wheatstone bridge arrangement of four set of MR valve with no moving part. However, the arrangement is not compact in one unit. Generally, compact unit is more practical to be used in hydraulic system. Thus, a new design needs to be considered to produce compact unit. The main objectives of this present research are to design a MR directional control valve using MR fluid, to analyse its magnetic circuit using FEMM software, and to study and simulate the performance of this valve. In this research, a comprehensive literature review on the advancement of this technology provides valuable insight on MR valve design by previous researchers. The design of MR directional control valve, the construction of the valve and the principle of work are presented. The design of proposed MR single valve has enabled the development of the MR directional control valve. Design and finite element analysis using FEMM software of the MR single valve and MR directional control valve were done to obtain the optimal design. The valve was fabricated and the experimental rig for valve test was developed. The experiment presentations for functional working principle of the valve and valve performance were shown. The results of the simulation show that the valve works in controlling the direction and the speed of hydraulic actuators. The valve can be operated with variable flow rate by varying the electric current. It is found that the electric current is inversely proportional to the flow rate. High current produces low flow rate and vice versa. It does the work of the Performance analysis of a new compact magneto-rheological proportional control valve for hydraulic actuation using FEM and experimental approach valves to proportionally control the hydraulic actuators. The valve can be operated as ON-OFF directional control valve as well as proportional directional control valve with meter-in or meter-out by changing electric connection.
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Keywords
New compact magneto-rheological proportional , control valve for hydraulic actuation