The invention relates to an emergency orbit control method during gas-liquid mixed variable thrust of a stationary orbit satellite. The emergency orbit control method comprises the following steps of injecting an ignition pulse sequence in a normal mode; starting position protection ignition, and simultaneously monitoring a relevant telemetering parameter range; adjusting the pulse width and the period of an ignition pulse sequence according to the ignition condition after the position protection ignition is finished; judging whether the fuel in the propellant pipeline is used up or not according to the position protection ignition condition; in the bit-preserving mode, modifying PID (Proportion Integration Differentiation) parameters of the controller and parameters of the pseudo-rate modulator; injecting an ignition pulse sequence in a position-preserving mode, starting ignition, and monitoring related telemetering parameters; after ignition is finished, the pulse width or period being adjusted according to the telemetering parameter condition in the bit protection process; judging whether the track control effect reaches the expectation or not according to the track measurement result; if the expectation has been reached, the orbit control ending. According to the normal mode and position protection mode combined emergency orbit control method, the influence of unstable thrust of the thruster on attitude control is overcome, and the stable and rapid emergency orbit control effect is guaranteed.
本发明涉及一种静止轨道卫星气液混合变推力时应急轨道控制方法,包括在正常模式下注入点火脉冲序列;开始位保点火,同时监视相关遥测参数范围;位保点火结束后,根据点火情况调整点火脉冲序列的脉宽和周期;根据位保点火情况判断推进剂管路中的燃料是否耗尽;在位保模式中,修改控制器PID参数和伪速率调制器参数;在位保模式下注入点火脉冲序列,开始点火,监视相关遥测参数;点火结束后,根据位保过程中的遥测参数情况调整脉宽或周期;根据测轨结果判断轨道控制效果是否达到预期;如果已经达到预期,则轨道控制结束。本发明正常模式+位保模式的联合应急轨道控制方法,克服推力器推力不稳对姿态控制的影响,保证平稳快速的应急轨道控制效果。
Emergency orbit control method during gas-liquid mixed variable thrust of geostationary orbit satellite
一种静止轨道卫星气液混合变推力时应急轨道控制方法
2021-09-21
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |
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