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http://dx.doi.org/10.21289/KSIC.2016.19.3.160

Development of Electronic Proportional Control Valve with LVDT for Spool Displacement Feedback and Its Performance Evaluation  

Shin, Haeng-Bong (Dept. of Advanced Engineering, Kyungnam University)
Han, Sung-Hyun (school of mechanical Engineering, Kyungnam University)
Publication Information
Journal of the Korean Society of Industry Convergence / v.19, no.3, 2016 , pp. 160-166 More about this Journal
Abstract
This study proposes the development and performance evaluation of electronic proportional control valve having an LVDT. The electronic proportional control valve is composed of hydraulic valve, proportional solenoid and controller. LVDT is to reduce the steady state error for the reference input of the controller by the feedback signal to detect the displacement of the spool. Designed LVDT is applied to the common proportional valve. In order to evaluate the performance of the developed valve, the hydraulic test equipment was developed and flow tests were carried out. From experimental results, it was proved that the hysteresis was less than 1% based on the maximum flow rate.
Keywords
Electro-hydraulic proportional valve; Proportional solenoid; Linear variable differential transformer(LVDT); Spool of vavle;
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