摘要
飞机起落架收放系统包含了多体系统动力学、控制、液压等内容,采用空间收放机构的大型民机起落架具有运动规律复杂、驱动单元多的特点,且收放过程中机构之间需要协调工作才能保证可靠收放。针对起落架收放系统以上特点,以某大型民机主起落架收放系统为对象,详细分析了收放系统中各部分的动力学行为,基于Virtual Lab.Motion和AMESim分别建立了起落架上位锁、起落架收放机构以及收放液压系统的动力学仿真模型,通过联合仿真求解得到起落架收放过程中的动力学特性。仿真计算结果与实际情况吻合,可为大型民机起落架收放系统设计提供参考,也为起落架收放系统进一步的研究奠定基础。
Landing gear retraction system contains dynamics of multi-body systems,control and hydraulic. Landing gear system with spatial retraction mechanism for large civil aircraft has the characteristics of complex movement and multi drive.Besides,in order to ensure the reliable retraction and extension,components of landing gear need to work harmoniously during the process of retracting and extending. In view of above characteristics of landing gear retraction system,takes one large civil aircraft main landing gear system as the study object,dynamic behavior of each part is analyzed in detail,and the dynamics simulation models of upper lock mechanism,landing gear system and retraction hydraulic system are established based on Virtual Lab. Motion and AMESim. Dynamic characteristics of landing gear systemduring retracting and extending processare obtained through Co-simulation method. The results ofsimulation coincide with actual situation,and can provide a reference for landing gear retraction system design for large civil aircraft. Andthe modeling methods lay the foundation for thefurther study of landing gear retraction system.
出处
《机械设计与制造》
北大核心
2016年第5期48-52,共5页
Machinery Design & Manufacture
关键词
起落架
收放系统
锁机构
联合仿真
Landing Gear
Retractionand Extension System
Lock Mechanism
Co-Simulation
