AMSim论文系列分享(Flight Control) 4

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019-液体火箭增压输送系统多学科动力学研究
020-直接驱动阀的阀芯摩擦力自适应补偿研究
直接驱动阀的阀芯摩擦力自适应补偿研究
夏立群, 牛世勇
（西北工业大学 自动化学院，陕西 西安 710062）
摘要：针对直接驱动阀阀芯摩擦力，论述了基于模型的摩擦力自适应补偿。描述了几种摩擦力
的动静态模型，建立了直接驱动阀的动态模型，设计了基于摩擦力动态补偿的自适应补偿器，并
采用SIMULINK 和AMESIM 联合仿真进行了验证。结果表明：基于LuGre 模型的摩擦力自适应
动态补偿控制器能够有效改善摩擦的非线性特性对DDV 式作动器性能的影响。
关键词：摩擦力补偿；直接驱动阀；LuGre 模型；自适应控制
中图分类号：TP273.21 文献标识码：A 文章编号：1004-731X (2008) 12-3327-03
Research of Adaptive Friction Compensation for Direct Drive Valve
XIA Li-qun, NIU Shi-yong
（Department of Automatic Control; Northwestern Polytechnical University, Xi′an 710062, China)
Abstract: An adaptive friction compensation scheme for direct drive valve was proposed based on LuGre model. Several
model of friction was described, especially LuGre z model. The dynamic model of direct drive valve (DDV) was built, and an
adaptive friction compensation controller was designed. In order to verify the performance of adaptive controller, simulation
models based on SIMULINK and AMESIM were built, and co-simulation of SIMULINK and AMESIM was carried out. The
results show that the adaptive controller improves a lot of DDV dynamic performance, which is influenced by hard
nonlinearity due to friction.
Key words: friction compensation; direct drive valve; LuGre model; adaptive control
032-仿真技术在飞机起落架可靠性分析中的应用研究
仿真技术在飞机起落架可靠性分析中的应用研究
赵世春.. ,2:喻天翔.. , 王慧.. , 宋笔锋..
(1.西北工业大学航空学院, 西安7 100 72 )
(2 . 中国航空工业集团公司成都飞机设计研究所, 成都6 1 ....理1 ..
摘要: 起落架所承受的动载荷较大, 造成系统工作环境复杂, 出现故障较多, 因此对起落架系统可靠性的研
究显得迫切和重要.. 以三维辅助建模软件..A T IA ..有限元分析软件N A S T R A N ..多体动力学分析软件I M S
vi rt ua l.La b 和液压控制仿真软件A M E Si m 等为工具, 采用自动仿真求解策略针对某起落架典型失效模式进
行仿真分析, 得到仿真分析数据的数据库, 并通过各平台下数据之间的共享和融合, 结合高精度..高效率的,叮靠
性分析方法,实现起落架典型失效模式的可靠性仿真分析.. 结合某飞机起落架落震可靠性分析案例,结果表
明:采用仿真技术建立仿真模型, 通过分析机构失效机理和失效模式, 结合可靠性分析方法进行起落架系统复
杂机构可靠性分析具有可行性和实用性..
关键词: 起落架仿真;可靠性分析;混合仿真;落震仿真
中图分类号: T B ll4 . 3 ; V 21 5 .7 文献标识码: A
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