期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
SMOOTHING NEWTON ALGORITHM FOR THE CIRCULAR CONE PROGRAMMING WITH A NONMONOTONE LINE SEARCH 被引量:8
1
作者 迟晓妮 韦洪锦 +1 位作者 万仲平 朱志斌 《Acta Mathematica Scientia》 SCIE CSCD 2017年第5期1262-1280,共19页
In this paper, we present a nonmonotone smoothing Newton algorithm for solving the circular cone programming(CCP) problem in which a linear function is minimized or maximized over the intersection of an affine space w... In this paper, we present a nonmonotone smoothing Newton algorithm for solving the circular cone programming(CCP) problem in which a linear function is minimized or maximized over the intersection of an affine space with the circular cone. Based on the relationship between the circular cone and the second-order cone(SOC), we reformulate the CCP problem as the second-order cone problem(SOCP). By extending the nonmonotone line search for unconstrained optimization to the CCP, a nonmonotone smoothing Newton method is proposed for solving the CCP. Under suitable assumptions, the proposed algorithm is shown to be globally and locally quadratically convergent. Some preliminary numerical results indicate the effectiveness of the proposed algorithm for solving the CCP. 展开更多
关键词 circular cone programming second-order cone programming nonmonotone line search smoothing Newton method local quadratic convergence
在线阅读 下载PDF
月面应急直接上升交会轨迹快速规划方法
2
作者 班焕恒 周聪 闫晓东 《北京航空航天大学学报》 2025年第4期1352-1366,共15页
当月面探测器出现某些突发状况而需要返回环月轨道器或地球时,上升器需具备自主规划出合适的应急上升交会轨迹的能力。以上升交会时间最短为目标函数,基于序列二阶锥规划方法,建立直接上升交会轨迹优化模型,并构建求解直接上升交会轨迹... 当月面探测器出现某些突发状况而需要返回环月轨道器或地球时,上升器需具备自主规划出合适的应急上升交会轨迹的能力。以上升交会时间最短为目标函数,基于序列二阶锥规划方法,建立直接上升交会轨迹优化模型,并构建求解直接上升交会轨迹优化问题的凸优化算法。为提高计算效率,对内点法进行定制化改进,主要改进有:线性方程组求解过程定制化改进;内点法热启动;二阶锥规划子问题求解精度动态调整。仿真结果表明:所提月面应急上升交会轨迹优化方法可实现上升器的快速上升交会。与采用通用内点法求解器的传统序列二阶锥规划方法相比,在求解精度不变的情况下,所提的序列二阶锥规划问题求解加速方法可达到9.5倍左右的加速比。综合运用所提方法,有望实现月面上升器的自主在线轨迹规划。 展开更多
关键词 月面应急上升交会 序列二阶锥规划方法 内点法定制化 内点法热启动 在线轨迹规划
在线阅读 下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部