能源平衡模型中工作模式判别方法

卫星能源平衡模型用于计算卫星预期的能源消耗,以判断卫星能源能否保证任务的顺利完成,指导电源系统设计或对规划任务进行能源约束。能源平衡计算需要先判别卫星工作模式,工作模式判别的准确性直接影响能源消耗计算的准确性。目前对于多任务且姿态需要相应机动的卫星缺少有效的模式判别方法,为此,提出了通过建立索引表及查询数据库的方式进行工作模式判别的方法。建立不同时间序列工作状态与卫星工作模式索引表,将轨道时间序列及规划任务时间序列注入数据库,查询数据库中不同时间序列工作状态,对照索引表可得卫星工作模式。为提高运行效率,利用加速算法能减少查询次数,缩短查询时间。通过仿真实验对加速参数选取进行了讨论。该方法适合于工作模式复杂且可用时间序列对工作模式进行约束的卫星。

Simulation of Working Pattern Discrimination Method in Satellite Power Balance Model

Satellite power balance model is used to calculate power consumption to make sure that satellite power can support the execution of tasks. It requires to discriminate satellite working pattern before calculating power consumption. The accuracy of pattern discrimination will influence the results of power consumption directly. However, there is no universal model to realize this function for multitasking satellite, especially when satellite attitude will change with tasks. In light of this, a method based on concordance list and database access to get working pattern is proposed. The concordance list of working status in each time sequence and satellite working pattern is established at first and then we inject time sequence data into a database. The working pattern in concordance list can be obtained after selecting working status from the database. In order to improve operating efficiency, accelerating algorithm is utilized in this method to decrease running time. Acceleration parameters are discussed through simulation. This method is suitable for multitask satellite that can be constrained by time series.