HU Jing-xiang1, LI Qi-peng2, YU Jia-hong3. Research on eddy current displacement sensor for electrohydraulic valves[J]. 2007, (10): 66-68. DOI: 10.13873/j.1000-97872007.10.026.
Owing to either the low frequency responses of LVDT for position detection of electrohydraulic valve spools or the incapability of working under high pressure and severe temperature drift of eddy current sensors
a new high-pressure eddy current displacement sensor is presented.Theoretical analysis and magnetic field simulation based on finite element method is given.Both the simulation and experimental results show that the sensor has good linearity
wide operating range
and can be suitable for detecting the position of spools under high pressure.