A key characteristic is its design for high acceleration and frequency response capability.The double-rod symmetrical structure provides identical effective piston area and speed in both directions,ensuring symmetrical motion characteristics.The piston rods are thick and short,contributing to low moving mass and inertia.It utilizes non-contact clearance seals or low-friction piston rings,resulting in minimal friction.The construction may incorporate high-strength,lightweight materials(e.g.,aluminum alloy tube).Internal flow paths are optimized to reduce fluid flow resistance.Natural frequency values are application-specific and available upon request.
Strokes are typically short,ranging from±10mm to±100mm.Operating pressure is high(21-35 MPa)to generate significant forces in a compact package.Maximum speed can exceed 2 m/s.Both piston rods are equal in diameter and are supported by long guide bearings or advanced gland designs to manage side loads.It typically integrates an LVDT(Linear Variable Differential Transformer)or magnetostrictive displacement sensor for real-time position feedback.
Used in applications requiring dynamic loading.Serves as an exciter in hydraulic vibration tables to simulate seismic waves or road profiles.Used in material and structural fatigue testing machines for cyclic loading.Employed in active vibration cancellation systems.In aircraft,used within electro-hydraulic servo actuators for control surface deflection.Also used in active suspension research and optical platform stabilization systems.
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