The vibration control method for structure of feed source under external excitation

Xu Xiudong; Li Rui; Cheng Jie; Li Mei; Yu Weirong; Wu Shaotong; Liu Yao; Liu Jiawei

doi:10.11884/HPLPB202537.250090

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Article Navigation > High Power Laser and Particle Beams > 2025 > Accepted Manuscript

Xu Xiudong, Li Rui, Cheng Jie, et al. The vibration control method for structure of feed source under external excitation[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250090

Citation:

Xu Xiudong, Li Rui, Cheng Jie, et al. The vibration control method for structure of feed source under external excitation[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250090

Xu Xiudong, Li Rui, Cheng Jie, et al. The vibration control method for structure of feed source under external excitation[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250090

Citation:

Xu Xiudong, Li Rui, Cheng Jie, et al. The vibration control method for structure of feed source under external excitation[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250090

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The vibration control method for structure of feed source under external excitation

doi: 10.11884/HPLPB202537.250090

Xu Xiudong^{1, 2
,},
Li Rui^{1, 2},
Cheng Jie^{1, 2},
Li Mei^{1, 2},
Yu Weirong^{1, 2},
Wu Shaotong^{1, 2},
Liu Yao^{1, 2},
Liu Jiawei^{1, 2}

1.
Northwest Institute of Nuclear Technology, Xi’an 710024, China
2.
Key Laboratory of Advanced Science and Technology on High Power Microwave, Xi’an 710024, China

Received Date: 2025-04-22
Accepted Date: 2025-06-05
Rev Recd Date: 2025-06-15

Available Online: 2025-07-07

Abstract

Abstract

The structure of cantilever has existed in solid surface antenna for high power microwave system. It is difficult to maintain the low acceleration for feed source structure of solid surface antenna during external vibration excitation. The traditional dynamic vibration absorber has a good control effect on the structure of cantilever. However, the application of traditional dynamic vibration absorber is limited to small range of frequency. In order to improve above problem, one kind of active vibration control method combing with optimal passive absorber is provided in this paper. The best installed position of dynamic absorber is obtained by analyzing and simulating the model of solid surface antenna. Then, the optimal parameters are calculated according to the mathematical model of simplified passive dynamic absorber system. Furthermore, the sliding mode control parameters were obtained by considering the external excitation through active absorber method. The stability of sliding mode control method was demonstrated. This control method combined sliding mode control with active control absorber, which can reduce the vibration response of antenna effectively. This paper simulated the two-degree-of-freedom vibration system with active control absorber, which gave time-domain vibration response of antenna. The top point displacement of antenna under the predetermined excitation was reduced more than 95% by comparing the condition of no any strategy. It can be seen that feed source structure is in a more stable state under the action of this controller.
- feed source,
- cantilever,
- vibration control,
- acceleration response,
- sliding mode control

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References(18)

References

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