通用自动化 10000417H
通用自动化 10000417H
其前置级液压放大器典型工作间隙在0.02mm左右,最易受油液污染而失效;由于绝对过滤精度较高(航天产品一般为10um),对污染度也十分敏感,一般在前置级前端设置油滤。航天领域电液伺服系统多采用闭式设计,本文通过AMEsim仿真分析和试验研究,提出可以将其泄压时间作为伺服阀油滤纳垢程度的一种新的表征方式,监控洁净程度,在其堵塞前替换,确保任务执行的可靠性。在电动液压能源断电后,高压部分的液压油(虚线部分)通过伺服阀的间隙返回低压部分,直至高压部分的压力下降到与低压部分相
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