摘要
根据能量法建立了磁流变阻尼器等效线性阻尼系数与电压和振幅的函数表达式;建立了起落架摆振半主动控制的数学模型,采用最大能量耗散的控制策略实现了基于磁流变阻尼器的减摆;讨论了不同稳定距下,飞机滑跑时发生摆振的临界速度随垂直载荷的变化。仿真结果表明,在飞机滑跑速度范围内,磁流变阻尼器减摆性能明显优于油液式减摆器的减摆性能,能够完全抑制摆振,并且对某些系统参数的变化具有鲁棒性。
In order to study the semi-active control of landing gear shimmy based on MR damper,firstly function expression of the MR damper equivalent damping coefficient with voltage and amplitude was set up.Secondly,the mathematical model for semi-active control of landing gear shimmy was constructed and maximum energy dissipation approach was proposed to suppress shimmy based on MR.Finally,the critical velocity of shimmy varying with the vertical force during taxing was investigated in different caster lengths.The simulation results show that the performance of MR to suppress shimmy is greatly superior to hydraulic shimmy damper during taxing.And MR suppresses shimmy completely and exhibits good robustness about some system parameters.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2010年第12期1401-1405,共5页
China Mechanical Engineering
基金
航空科学基金资助项目(98B52023
04B52012)
关键词
磁流变阻尼器
半主动
最大能量耗散
摆振
鲁棒性
magneto-rheological（MR） damper
semi-active
maximum energy dissipation
shimmy
robustness
