文档介绍：2008-07题录英译集
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特别约稿
基于VG7和AC主轴电机的位置闭环伺服系统
朱同兴
(中国兵器工业第五八研究所,四川绵阳 621000)
摘要:比较交流伺服和交流变频传动特点,从机床特殊控制需求和实用出发,以变频器驱动AC主轴电机,利用检测元件和NC组成位置半或全闭环交流伺服系统,并给出设计、调试和实测数据。该技术方案在生产中获得成功应用,具有较好的参考价值。
关键词:变频器;主轴电机;光栅尺;伺服系统
Position Close-Looped Servo Based on Principal Axis Electro-motors of VG7 & AC
ZHU Tong-xing
(No. 58 Research Institute of China Ordnance Industries, Mianyang 621000)
Abstract: Comparing characteristics of AC servo and AC frequency converted transmission, and based on special control requirements and practicality of machine tools, use transducer to drive AC principal axis electro-motors, bine ponents and NC as positional half/full close-looped AC Servo. Scheme, debugging and test data of the servo system are introduced. The technical scheme has been practically used in production, which has nice reference value.
Keywords: Transducer; Principal axis electro-motors; Raster ruler; Servo
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武器装备自动化
基于边际效应分析的备件优化
韦艺,康锐
(北京航空航天大学工程系统工程系,北京 100083)
摘要:针对如何确定备件数量及其在各级保障站点如何分配的问题,在系统级可用度分析基础上,将边际效应分析方法用于备件优化模型,经计算得出各类备件数量及其在各级保障站点库存分配数量,得到一个优化的备件初始配置方案,该方案可使系统可用度在一定费用约束下达到最大或在达到一定的系统可用度要求时所花费用最小。
关键词:备件优化;可用度;费用;边际效应
Optimization of Spare Based on Marginal Effect Analysis
WEI Yi, KANG Rui
((Dept. of System Engineering of Engineering Technology, Beihang University, Beijing 100083, China)
Abstract: In order to solve problems of how to determine the number of spares and how to distribute them in multi-echelon support stations, a method of system availability analysis based on the marginal effect is given. This method is used to the model of spare optimization, and an initial spare support scheme is gained putation. This scheme includes spares number and its distribution solutions, which can make system availability maximum under a certain extent of cost, or spend the lowest when system availab