摘要
电液比例溢流阀是深海远程控制和高精度控制的关键元件之一,笔者对其在深海下润滑方式、控制特点以及动态特性的进行了研究。基于混合润滑和粘性阻尼模型,针对深海极端工况特点,采用经典控制理论对深海溢流阀进行了建模和仿真,并在拟深海极端环境的高压模拟舱对其进行了试验研究。仿真计算和试验结果表明:水深环境外部压力的增大引起工作介质的粘度增加,导致溢流阀在大深度深海时动态特性变坏,从而得出了低粘度工作介质和低液压阻尼是深海液压控制系统性能设计中需考虑的重要因素之一。
The electro-hydraulic proportional relief valve is one of the key elements of the deep-sea faraway and high-precision controller. The style of lubrication, its control properties and dynamic characteristics are studied under deep-water. Based on the model of hybrid lubrication and viscous damping and focused on deep-sea extreme work conditions, classical control theory is utilized for the model building and simulation of the deep sea electrohydraulic proportional relief valve. By means of experiment in the high-pressure hull, the deep-sea extreme environment is simulated. Records of the experiment and simulation show that the raising of outside pressure of water depth induces the viscosity of flow media increasingly. As a result, the dynamic performance of the relief valve tends to be unstable in deep sea. We finally draw the conclusion that low viscosity of flow media and low hydraulic damp is one of significant factors of deep-sea hydraulic control system performance design.
出处
《机械科学与技术》
CSCD
北大核心
2009年第9期1239-1243,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家863基金项目(2006AA09Z226)资助
关键词
深海溢流阀
混合润滑
粘性阻尼
高压模拟舱
deep-sea relief
hybrid lubrication
viscous damping
high-pressure hull
