摘要
随着飞机液压系统的高压、高功率化发展,液压管路的振动问题开始凸显出来,降低液压管路的振动,对于提高飞机航行安全性具有重要意义。本文针对航空液压管路进行振动特性研究,获得管路振动固有频率随内部压力和流速的变化规律,进一步根据液压管路动力学参数可变的特点,设计刚度可调的半主动吸振装置,建立适合复杂系统动力学响应分析的多软件联合仿真方法,验证吸振装置和半主动控制算法的振动抑制效果。仿真结果表明,半主动振动控制方法对液压管路系统的振动能够起到有效的抑制作用,在吸振器有效频率范围内管路振动衰减能够达45dB以上。
With the development of high pressure and high power of aircraft hydraulic system,the vibration problem of hydraulic pipeline becomes prominent.Reducing the vibration of hydraulic pipeline is of great significance to improving the safety of aircraft navigation.Based on aviation hydraulic pipeline vibration characteristic study,pipeline vibration natural frequency changing with the internal pressure and velocity is obtained,further according to the characteristics of the variable hydraulic line dynamics parameters,adjustable stiffness semi-active vibration absorbing device is designed,and a more suitable for dynamic response analysis of complex system software joint simulation method is established,thus verifying the vibration suppression effect of vibration absorber and semi-active control algorithm.The simulation results show that the semi-active vibration control method can effectively suppress the vibration of the hydraulic pipeline system,and the pipeline vibration attenuation can reach more than 45dB within the effective frequency range of the vibration absorber.
作者
邵敏强
张胜发
杨乐
黄自力
Shao Minqiang;Zhang Shengfa;Yang Le;Huang Zili(State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Aeronautical Key Laboratory of Aeronautical Science and Technology for Electromechanical System Integration,AVIC Jincheng Nanjing Engineering Institute of Aircraft System,Nanjing 210001,China)
出处
《航空科学技术》
2022年第7期113-119,共7页
Aeronautical Science & Technology
基金
航空科学基金(202028052012)。
关键词
飞机液压管路
振动控制
流固耦合
逐步寻优算法
动力吸振器
aircraft hydraulic pipeline
vibration control
fluid-structure interaction
stepwise optimization algorithm
dynamic vibration absorber
