Abstract
To address issues such as loose structure, low integration, and reliance on imports in existing marine electro-hydraulic actuators, this paper presents an integrated compact electro-hydraulic actuation device. The device integrates the drive unit, connection block, hydraulic actuation unit, and feedback signal box into one assembly. Through the integrated design of a built-in radial piston pump and valve block, a micro hydraulic power unit with no external pipelines is achieved. This paper elaborates on the structural composition, working principle, and key module design of the device, and analyzes the implementation of its triple redundancy operation modes: "electric - manual hydraulic - manual mechanical". Six-probability (reliability, maintainability, etc.) design and risk analysis were conducted, a reliability model was established, and the predicted Mean Time To Repair (MTTR) meets the shipboard requirement of ≤ 2h. Performance test results show that the device achieves a maximum working pressure of PN16, power ≤ 300 W, and an adjustable rotation angle of 90° ± 3°, realizing high integration and compact layout. The device was designed and manufactured in collaboration with a domestic marine valve actuator manufacturer.
Recommended Citation
Yan, Jiangang
(2026),
Integrated System and Experimental Study of a Compact Electro-Hydraulic Actuator for Marine Applications,
Yanbu Journal of Engineering and Science: Vol. 23:
Iss.
2, 40-45.
DOI: https://doi.org/10.53370/3122-3303.1220
Available at:
https://yjes.researchcommons.org/yjes/vol23/iss2/4
