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Thrust Vector Control of an Upper-Stage Rocket with Multiple Propellant Slosh Modes

机译:具有多种推进剂晃荡模式的高级火箭的推力矢量控制

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摘要

The thrust vector control problem for an upper-stage rocket with propellant slosh dynamics is considered. The control inputs are defined by the gimbal deflection angle of a main engine and a pitching moment about the center of mass of the spacecraft. The rocket acceleration due to the main engine thrust is assumed to be large enough so that surface tension forces do not significantly affect the propellant motion during main engine burns. A multi-mass-spring model of the sloshing fuel is introduced to represent the prominent sloshing modes. A nonlinear feedback controller is designed to control the translational velocity vector and the attitude of the spacecraft, while suppressing the sloshing modes. The effectiveness of the controller is illustrated through a simulation example.
机译:考虑了具有推进剂晃动动力学的高级火箭的推力矢量控制问题。控制输入​​由主机的万向节偏转角和围绕航天器质心的俯仰力矩定义。假定由于主发动机推力引起的火箭加速度足够大,以使表面张力在主发动机燃烧期间不会显着影响推进剂运动。引入了晃动燃料的多质量弹簧模型来表示突出的晃动模式。设计了一种非线性反馈控制器,以控制平移速度矢量和航天器的姿态,同时抑制晃动模式。通过仿真示例说明了控制器的有效性。

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  • 来源
    《Mathematical Problems in Engineering》 |2012年第8期|848741.1-848741.18|共18页
  • 作者单位

    Department of Physical Sciences, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA;

    Department of Physical Sciences, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA;

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