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在间接法求解小推力轨道计算中,通过先选取合适的性能指标,并对小推力最优控制问题转化为两点边值问题的方程在开普勒轨道附近线性展开,有效增强了协态变量初值收敛性,使得该方法无需对协态变量初值进行反复的随机猜测,迭代过程也不需要人工干预,提高了轨道搜索应用中的计算效率.之后再对性能指标进行迭代优化,可获得逼近于Bang-bang控制的控制方案.
In the indirect method of solving small thrust orbit calculation, by choosing appropriate performance index first, and the equation of small thrust optimal control problem transformed into two-point boundary value problem is linearly expanded near Keplerian orbit, which effectively enhances the covariate variables The convergence of the initial value makes the method without repeated random guess of the initial value of the covariate variable and the iterative process does not need human intervention to improve the computational efficiency of the orbit search application.After iteration optimization of the performance index, Approaching the control scheme controlled by Bang-Bang.