Designs of Landing Gear Magnetorheological Damper and Virtual Test
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摘要: 磁流变技术应用于起落架缓冲器与通过油针修型来改变油液阻尼相比,具有更好的适应性,更大的调节范围,且磁流变缓冲器外形尺寸较小可以改善飞机整体的受力特性,是起落架缓冲系统设计一个重要方向。在总结现有文献的基础上详细设计了一个磁流变缓冲器,分析了该缓冲器的磁场,建立了力学模型,设计了一套试验验证方法并进行了虚拟试验。结果显示模糊控制下的缓冲器缓冲性能明显优于不加控制的缓冲性能,达到了载荷缓慢增长至峰值的设计要求。Abstract: Magneto rheological( MR) damper of aircraft landing gear has better adaptability and wider adjusted range than the changed pin cross-section one. The smaller size of MR damper improves the strength of aircraft structure. A MR damper and its test method are designed in this paper. The magnetic field and mechanics of MR damper are modeled,and the test simulation is done. The fuzzy controlled damping properties perform better than the non-controlled and fulfill the designing demand of that the load increases to the peak gradually.
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Key words:
- computer simulation /
- damping /
- design /
- experiments /
- fuzzy control
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