航空学报 > 2024, Vol. 45 Issue (12): 229425-229425   doi: 10.7527/S1000-6893.2024.29425

固体力学与飞行器总体设计

磁流变起落架的开关控制落震载荷减缓实验

康在飞1,2, 王乐1, 姜澎伟1, 杨智春1()   

  1. 1.西北工业大学 航空学院,西安 710072
    2.航空工业成都飞机设计研究所,成都 610091
  • 收稿日期:2023-08-09 修回日期:2023-10-31 接受日期:2024-01-09 出版日期:2024-01-19 发布日期:2024-01-17
  • 通讯作者: 杨智春 E-mail:yangzc@nwpu.edu.cn
  • 基金资助:
    国家级项目

Experimental research on drop loading alleviation using on⁃off control for magneto⁃rheological landing gear

Zaifei KANG1,2, Le WANG1, Pengwei JIANG1, Zhichun YANG1()   

  1. 1.School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China
    2.AVIC Chengdu Aircraft Design & Research Institute,Chengdu 610091,China
  • Received:2023-08-09 Revised:2023-10-31 Accepted:2024-01-09 Online:2024-01-19 Published:2024-01-17
  • Contact: Zhichun YANG E-mail:yangzc@nwpu.edu.cn
  • Supported by:
    National Level Project

摘要:

起落架磁流变缓冲器是根据磁流变效应设计的一种半主动式缓冲器,可以通过调节励磁线圈电流来改变缓冲器的阻尼,从而减缓起落架的着陆载荷。本文设计了一款带开关控制的起落架磁流变缓冲器,对磁流变缓冲器的电路动态响应进行测试。针对电路响应时间延迟问题,提出并设计出带局部负反馈的开关控制器,通过调节磁流变缓冲器励磁线圈电流,以减缓着陆载荷,并通过落震实验验证了对着陆载荷的减缓效果。落震实验结果表明,使用带局部负反馈的开关控制方法,与磁流变缓冲器励磁线圈未通电时(即常规油-气式缓冲器)相比,落震载荷峰值降低10.3%。

关键词: 磁流变缓冲器, 起落架, 落震载荷减缓, 开关控制, 前馈控制

Abstract:

The magneto-rheological buffer of the landing gear is a semi-active damper designed based on the magneto-rheological effect. It can adjust the damping level of the buffer by varying the current of the exciting coil, thereby alleviating the landing load of the landing gear. We design a magneto-rheological buffer with on-off control and test the circuit dynamic response of the magneto-rheological buffer. To solve the time delay problem of the circuit response, an on-off controller with local negative feedback is proposed and designed to adjust the excitation coil current of the magneto-rheological buffer to alleviate the drop load. The effectiveness of alleviating the landing load is validated through the drop test. The results show that using the on-off control strategy with local negative feedback, we can reduce the peak value of the drop load by 10.3%, compared with the case in which the exciting coil is not energized (i.e., the oleo-pneumatics buffer).

Key words: magneto-rheological buffer, landing gear, drop loading alleviation, on-off control, feedforward control

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