排序方式: 共有38条查询结果,搜索用时 0 毫秒
1.
介绍了用于评估一种由O形圈和PTFE条组成的组合式密封件密封性能的数学模型.为了更好地模拟真实的工况,该模型综合考虑了许多可能的影响因素,如压力,温度,以及密封件材料性能等.这个模型以弹流润滑理论为基础,可用于计算润滑油膜厚度,压力分布和温度场分布,从而为解决“如何以最小的泄漏率保证较好的润滑性能”这个问题提供理论依据. 相似文献
2.
<正>文摘:氨合气的组分,在液氨中的溶介度,其序列是成 CH_4>Ar>N_2>H_2,并随温度而著显增加。本文是以吸收过程来分离氨循环气中甲烷和氩的很好的设计。这个过程可回收从弛放气中正常损失氢的80—90%,氩的回收也极为便利。对于设计参数变化的影响也作讨论。氨是一种较重要的大量生产的无机化学产品,在美国年产量已超过1300万吨。它是 相似文献
3.
4.
A hardware-in-the-loop (HWIL) simulator for gun servo system is described in this paper, and its load modeling technologies,such as road spectrum model,sea wave model are studied. The simulation results show that the models can be used in HWIL and satisfy the requirements of hardware-in-the-loop simulator of gun servo system. 相似文献
5.
6.
甲醇的用途广泛,且生产经济效益可观.文章在综合、对比国内外诸多专著及生产实践的基础上,提出了对甲醇合成及其合成系统的讨论要点;并依次对触媒、内件选择、单醇的放空气量、联醇的醇氨比和冷激式内件的过程予以分析等.还重点地向读者推荐了冷激式甲醇合成内件.笔者认为:在当前国内合成氨厂的生产中,应以多产甲醇为上策. 相似文献
7.
概述了小尿素生产的几种先进流程;分析了尿素合成塔、汽提塔等关键设备的特征;对各种生产流程的消耗和应用作了比较。评述的意见是:热循环(UTI)法技术路线对小氮肥厂的改产比较适用;并建议在八五期间小尿素的建设工程中广为推广。 相似文献
8.
A new model identification method of hydraulic flight simulator adopting improved particle swarm optimization (PSO) and wavelet analysis is proposed for achieving higher identification precision.Input-output data of hydraulic flight simulator were decomposed by wavelet multiresolution to get the information of different frequency bands.The reconstructed input-output data were used to build the model of hydraulic flight simulator with improved particle swarm optimization with mutation (IPSOM) to avoid the premature convergence of traditional optimization techniques effectively.Simulation results show that the proposed method is more precise than traditional system identification methods in operating frequency bands because of the consideration of design index of control system for identification. 相似文献
9.
10.