Abstract: Aiming at the changing phenomenon of orifice area of the hydraulic spool valve caused by oil erosion, the erosion wear of orifice is studied, and a method of spool displacement changing with ...

Abstract: The digital direct drive circuit controlled by PWM signal is a key control component for the electro-hydraulic proportional valve, the driving performance of which is a significant factor of ...

Smart Structures and Systems Laboratory, Department of Mechanical Engineering, Inha University, Incheon, South Korea This paper presents tracking control performances of a piezostack direct drive ...