ID 原文 译文
56448 舰载机保障作业调度是指在有限时间、空间和资源约束的前提下合理安排舰载机所需保障作业顺序并高效完成舰载机的作业保障. Shipboard aircraft support operation scheduling refers to a rationalarrangement of the order of support operations required by the carrier aircraft as well as to an efficient completionof the support operations for the carrier-borne aircraft under constraints of limited time, space, and resources.
56449 现有基于最优化方法 (动态规划、线性规划等)和启发式方法 (如遗传算法、粒子群等)的求解策略仅适用于保障作业可预知情况下的作业调度,很难满足高动态作战场景下的实时保障作业调度需求. The existing solution strategies based on optimization methods (dynamic programming, linear programming,etc. ) and heuristic methods (genetic algorithm, particle swarm optimization, etc. ) are only suitable for operationscheduling in the case of predictable operations, and it is challenging to meet the real-time support operationscheduling requirements in highly dynamic combat scenarios.
56450 基于此,本文提出了一种新的基于DQN (deep Q-network)的舰载机保障作业实时调度方法,将舰载机保障作业调度问题建模成部分可观测马尔科夫决策过程(partially observable Markov decision processes)问题,利用全局与长期收益对保障作业调度过程进行优化,并通过离线学习和在线调配的学习决策框架进行解决. For this reason, a new real-time scheduling methodfor carrier-borne aircraft support operations based on deep Q-networks (DQNs) is proposed. This method consistsof modeling the scheduling problem of aircraft support operations as a partially observable Markov decisionprocess (POMDP) problem. The global and long-term benefits are used to optimize the scheduling process, andthe decision-making framework of offline learning and online deployment is used to solve the scheduling problemof aircraft support operations.
56451 经过仿真实验验证,该方法能显著提高舰载机保障作业调度效率并满足实时决策环境的需要. The simulation results demonstrate that this new method can significantly improvethe efficiency of shipboard aircraft support operation scheduling, thus enabling to meet the needs of real-timedecision-making environments.
56452 六面体网格因其良好的数值性能成为有限元分析等领域中重要的一种离散化方法,而基于标架场导引的重网格化是实现可控六面体网格剖分的重要技术. Hexahedral meshes represent an attractive discretization strategy in finite element analyses owingto their good numerical performance. Frame field-based remeshing is an important technique for controllablehexahedral meshing.
56453 现有的标架场生成技术由于所获得的标架场往往存在拓扑矛盾,难以运用于纯六面体网格的生成,但较易用于六面体主导混合网格的生成. Existing frame-field generation methods cannot be directly used for purely hexahedralmeshing due to possible topological conflicts. These problems are less severe in the case of hexahedral-dominantmeshing.
56454 然而,这种六面体主导网格的质量容易受到标架场旋度的影响. However, the quality of these hexahedral-dominant meshes is largely affected by the curl of the inputframe fields.
56455 针对这一问题,本文提出了一种三维标架场保向且长度可控去旋方法. With the aim of overcoming this issue, we propose a direction-preserving and length-controllablecurl-correction method of 3D frame fields.
56456 该方法通过分析三维向量场的旋度,构造针对四面体网格的离散旋度能量,并将其推广至三维标架场的旋度能量. We analyze and construct the discretized curl energy of the 3D vectorfield on tetrahedral meshes and extend it to frame fields, i. e. , the composition of three vector fields.
56457 为保持原标架场方向并控制其长度,引入了表达三维标架场3个子向量场长度伸缩量的标量场,并将新标架场表示为标量场和原标架场的合成,最后通过极小化合成场的旋度得到优化后的标架场. In orderto preserve the input directions as much as possible, three scalar fields were introduced to denote the stretchlength of the three vectors of the frame fields and represent the new fields as a combination of the original framefields and scalar fields. Through global-optimization of the curl energy combined with a smooth term, the finalcurl-corrected frame fields are obtained, which are further used for hexahedral-dominant remeshing.