The invention relates to a control strategy of a double-shaft solar wing driving mechanism of a near-earth low-dip-angle orbital spacecraft in an earth orientation mode. The control strategy comprises the following steps of 1, sun apparent position motion derivation; step 2, designing an SADA working mode; and step 3, switching and skipping the working mode. According to the invention, sun alignment of the sailboard under the low-dip-angle track can be ensured. By simplifying sun position formula calculation and performing coordinate system conversion, a sun azimuth angle and a pitch angle which meet precision requirements can be obtained with lower calculation cost, and then double-shaft SADA tracking is performed. Different SADA working modes and jump processes are designed, various working conditions from injection to normal work to abnormal condition processing and the like are included, and automation of the whole process of sailboard sun alignment is achieved. The control strategy is simple in principle, concise and efficient, meanwhile, control stability is considered, high expandability is achieved, and the method can be widely applied to low-dip-angle orbit spacecrafts.
本发明涉及一种近地低倾角轨道航天器对地定向模式下的双轴太阳翼驱动机构的控制策略,包括以下步骤:步骤1:太阳视位置运动推导;步骤2:SADA工作模式设计;步骤3:工作模式切换跳转。本发明能够保证低倾角轨道下的帆板对日。通过简化太阳位置公式计算并进行坐标系转换,可以用较低的计算成本获得满足精度要求的太阳方位角和俯仰角,进而进行双轴SADA跟踪。设计不同的SADA工作模式和跳转流程,包含了从入轨到正常工作再到异常情况处理等多种工况,实现了帆板对日全流程的自动化。控制策略原理简单,简洁高效,同时兼顾了控制的稳定性,具有较强的可扩展性,可广泛应用于低倾角轨道航天器中。
Control strategy of double-shaft solar wing driving mechanism in earth orientation mode of near-earth low-dip-angle orbit spacecraft
一种近地低倾角轨道航天器对地定向模式下的双轴太阳翼驱动机构的控制策略
2024-07-26
Patent
Electronic Resource
Chinese
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