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建立了冲击载荷下磁流变减震器力学模型,并用试验数据验证了该模型有较高的准确性与可信度。在ADAMS/Aircraft中建立了基于磁流变减震器的飞机主起落架虚拟样机模型,并在MATLAB/Simulink中搭建了磁流变半主动起落架的模糊控制系统。应用ADAMS和MATLAB软件,对飞机两点着陆情况下的磁流变半主动起落架的落震过程进行联合仿真分析,并对比被动控制和半主动控制起落架的仿真结果。研究结果表明,磁流变半主动控制起落架能够有效地降低飞机落震冲击载荷和振动响应。
The mechanical model of MR damper is set up under impact load, and the experimental data verify that the model has high accuracy and reliability. In the ADAMS / Aircraft, a virtual prototype model of main landing gear based on magnetorheological shock absorber was established and a fuzzy control system of magnetorheological semi-active landing gear was set up in MATLAB / Simulink. The ADAMS and MATLAB software were used to simulate the falling process of the magnetorheological semi-active landing gear under two landing conditions. The simulation results of the passive control and the semi-active landing gear were compared. The results show that the magnetorheological semi-active landing gear can effectively reduce the impact load and vibration response of the aircraft.