This paper provides a review of the state of the art of electro-hydraulic servovalves, which
are widely used valves in industrial applications and aerospace, being key components for …

Giant magnetostrictive material is a kind of excellent engineering material for its large
magnetostriction, fast response speed and high energy density. And giant magnetostrictive …

Piezoelectric actuators are particularly interesting in high-speed precision flow control
valves due to their fast dynamic response and simple structure. However, concurrently …

The potential to actuate proportional flow control valves using piezoelectric ceramics or
other smart materials has been investigated for a number of years. Although performance …

The pilot operated directional valves are widely used in hydraulic systems. For the purpose
to improve the dynamic characteristics and control accuracy of the traditional valve, this …

Bridge-type compliant mechanisms (BTCM) are frequently used as displacement amplifiers
in the precision manipulation. There have been a considerable number of studies on the …

This paper is a thorough review of innovative architectures of electro-hydraulic servovalves
that exploit actuation systems based on piezo-electric materials. The use of commercially …

Servovalves are compact, accurate and high-bandwidth modulating valves widely used in
aerospace, defence, industrial and marine applications. However, manufacturing costs are …

The accurate model of the jet-type valve, as the pilot control stage of a jet-pipe/deflector-jet
servovalve, is of great significance to analyze and design a servovalve. However, the flow …

Electro-hydraulic servo-valves are widely used components in the mechanical industry,
aerospace and aerodynamic devices which precisely control the airplane or missile wings …