| Citation: | LIN Kang, MA Yunpeng, ZHENG Zewei, et al. Height control of stratospheric aerostat based on secondary airbag[J]. Journal of Beijing University of Aeronautics and Astronautics, 2022, 48(5): 762-770. doi: 10.13700/j.bh.1001-5965.2020.0679(in Chinese)
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In the past, when the aerostat hovering or flight control was designed, wind was used as an interference item or resistance, and the propeller was required to overcome the wind resistance. The energy carried by the aerostat is limited, so there is a problem of insufficient energy in the design of the aerostat.According to the characteristics of the stratospheric wind field, this paper uses a secondary airbag to control the height of the aerostat, realizes the utilization of wind fields with different heights in the stratosphere, and can reduce the energy consumption of the aerostat. In this paper, the aerostat height control model is established, backstepping is used to design the aerostat height controller, the state observer is used to estimate the aerostat model error and input error, and simulation analysis is performed to prove the designed controller can effectively control the height of the aerostat. And this paper establishes the change model of the pressure difference between the inside and outside of the airbag when the aerostat height is controlled, and simulates and analyzes the influence of the change of aerostat height on the pressure difference between the inside and outside of the airbag.
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