|
Wang Qingfeng
Li Yanmin
Zhong Tianyu
Xu Guohua
State Key Laboratory of Fluid Power
Transmission and Control,
Zhejiang University,
Hangzhou 310027, China |
|
|
pressure compensation
method
of UNDERWATER HYDRAULIC
SYSTEM with hydraulic power
unit being under atmospheric
circumstance AND pressure
compensated valve*
Abstract: Based on the analysis of the-state-of-the-art of pressure compensation of underwater hydraulic systems (UHSs), a new method of pressure compensation of UHSs, whose hydraulic power unit is in the atmospheric circumstance, is proposed. And a pilot-operated relief valve with pressure compensation is realized. The pressure compensation precision is guaranteed by direct detection. Its dynamic performance and stability are improved by a dynamic feedback. Theoretical study, simulation and experiment show that the pilot-operated relief valve with pressure compensation has a fine property of tracking underwater ambient pressure and meet the requirement of underwater ambient pressure compensation.
Key words:
Underwater hydraulic system (UHS) Pressure compensation Underwater ambient pressure (UAP) Pressure relief valve
|