摘要
为降低飞机驾驶员在路径规划任务中的工作负荷,提出了基于知识库的路径规划辅助系统结构。采用基于网格的启发式A*搜索技术完成路径规划任务。利用知识库中的规则进行推理,调节启发函数的加权因子,提高求解最优性,并调节规划网格大小,获得最佳求解速度和精度。知识库中的知识规则根据具体条件的累积和计算,在训练及使用中不断得以补充,减少不确定因素对驾驶员的影响。通过系统仿真验证,表明了该方案和算法的有效性。
A path planmng-alding system based on a knowledge base was proposed for decreasing the human workload. The path planning was made based on A^＊ heuristics search algorithms. The expert experience stored in the knowledge base was used for accomplishing the weight setting of heuristics function to obtain the optimal solution, and the grid selection to high solving speed and precision. The rules in the knowledge base were amended according to operating condition variation in the course of simulation experiments. It decreased the effect of uncertainty on a pilot. The simulation results demonstrate the effectiveness of the proposed path planning-aiding system.
出处
《飞行力学》
CSCD
北大核心
2008年第1期44-47,共4页
Flight Dynamics
基金
国家自然科学基金资助项目(90205011)
关键词
路径规划
专家系统
知识库
A^＊算法
辅助系统
path planning
expert system
knowledge base
A^＊ algorithm
assistant system
