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Experimental research on drop loading alleviation using on⁃off control for magneto⁃rheological landing gear
Received date: 2023-08-09
Revised date: 2023-10-31
Accepted date: 2024-01-09
Online published: 2024-01-17
Supported by
National Level Project
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).
Zaifei KANG , Le WANG , Pengwei JIANG , Zhichun YANG . Experimental research on drop loading alleviation using on⁃off control for magneto⁃rheological landing gear[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2024 , 45(12) : 229425 -229425 . DOI: 10.7527/S1000-6893.2024.29425
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