Hydraulic servocylinders for vessel controls

New naval solutions offer unmatched comfort and performances both at high-speed vessel’s motion and at anchor.
The underwater fins stabilising system, actuated by Atos electrohydraulic servoactuators, ensures full ship stability, roll, pitch and direction, thus allowing to cruise at high speed with the best comfort.
The modern commercial, pleasure and luxury vessels offer enhanced comfort and fuel economy in any sea condition thanks to innovative stabilization systems and modern steering units, operated by Atos proportional valves and stainless steel servocylinders.
Particularly, the bow foils control the stability (pitching) by lifting and lowering the vessel through precise longitudinal regulations; the stern foils trim the ship motions (rolling) and the vertical movement (heaving) while the rudder performs the ship direction.

Digital electrohydraulics offers innovative solutions also for other naval applications suitable for commercial, pleasure and luxury crafts:

• Controllable pitch propeller: propulsion systems performing higher propulsive efficiency thanks to the adjustment of the blade pitch.
• Roll stabilization systems: underwater fins or anti-roll torque devices generate a counteracting moment to prevent the tendency of the vessel to roll, thus granting enhanced comfort and a safe navigation.

Different solutions are available for stabilization foils and pitch control in order to guarantee high performance and, at the same time, keep the best comfort in any sea condition. The core of these systems, which equip the vessels, is the hydraulics which allow smart and long-lasting solutions:

• Controllable pitch propeller: the digital proportional valves control hydraulic motor connected to the axial rotation of blades, to improve vessel manoeuvrability and fuel economy.
• Underwater fins: the fins and steer motion are operated by TEZ digital proportional valves, featuring top accuracy and fast response time, with integrated user friendly axis controller and servocylinders capable to perform a combined closed loop control of force and position.
• Anti-roll torque devices: they are interfaced through fieldbus to the hydrofoils electronic system and to the shipboard sensors (inclinometer, gyroscope and accelerometers) to modify the gravity centre rotatory by stainless steel cylinder controlled from digital proportional valve.