FAST液压促动器过滤系统  

Filtration System for Hydraulic Actuators of FAST

作　　者：雷政[1,2,3] 王启明 甘恒谦[1,3] 朱明[1,3] 姜鹏[1,3] LEI Zheng;WANG Qiming;GAN Hengqian;ZHU Ming;JIANG Peng(National Astronomical Observatory,Chinese Academy of Sciences,Beijing 100101;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 101408;CAS Key Laboratory of FAST,Chinese Academy of Sciences,Beijing 100101)

机构地区：[1]中国科学院国家天文台,北京100101 [2]中国科学院大学天文与空间科学学院,北京101408 [3]中国科学院FAST重点实验室,北京100101

出　　处：《机械工程学报》2020年第4期218-223,共6页Journal of Mechanical Engineering

基　　金：国家自然科学基金(11673040);国家自然科学青年基金(11603045,11803053)资助项目。

摘　　要：500 m口径球面射地望远镜(Five-hundred-meter aperture spherical radio telescope,FAST)促动器液压系没有过滤设计,随着运行时间的增长,设备的油液清洁度等级普遍超过设计许用范围,对其可靠性和使用寿命构成严重影响。针对该问题,提出液压系统动态平衡过滤概念,建立促动器液压系统污染控制数学模型,结合促动器现有条件设计了外挂式过滤系统方案。Matlab软件仿真显示,安装外挂式过滤系统后,液压促动器经10次工作循环达到动态平衡,油液清洁度等级为NAS6级。样机试验表明,理论和试验结果一致性较好,验证了污染控制模型建立的准确性和外挂式过滤系统方案的有效性。通过理论分析与试验相结合的方法,为FAST液压促动器油液污染问题处理提供了一种有效的外挂式过滤系统解决方案,也为类似液压系统油液污染控制研究提供参考。There is not filtration design of actuators of(Five-hundred-meter aperture spherical radio telescope,FAST).With the working time increasing,most of oil contamination level of hydraulic actuators of FAST is exceed allowable values,and the reliability and lifetime of actuators are cut down.To solve the problem,the principle of dynamic balance of oil filtration is proposed.The mathematical model of contamination control for hydraulic system is established,and the solution of hung outside filtration system for hydraulic actuators is designed.The model is simulated by Matlab.The results show that the dynamic balance state of actuator can be attained by 10 times working after the hung outside filtration system installed,and the oil of NAS6 can be achieved at the same time.The test of prototypes is completed,and the results of simulation and test agree with each other very well.The effectively of the solution for actuators is proved to improve the grade of hydraulic oil,and the mathematical model is proved to be correct.An effective solution is provided to solve the problem of actuator of FAST by the method of combination theoretical analysis and test.Meanwhile,it can be used as the reference for similar research of hydraulic pollution control.

关 键 词：促动器 动态平衡 数学模型 油液污染控制 可靠性和寿命 

分 类 号：TH137[机械工程—机械制造及自动化]