摘要
飞行器航迹规划问题通常需要满足多个优化目标,建立合适的航迹性能指标是解决问题的关键。针对基于Voronoi图的航迹规划方法,研究了航迹规划性能指标的多目标综合优化问题。首先,分析了目前广泛采用的多目标优化性能指标的不足及合理建立指标的困难:在现有的性能标中,因为各优化目标的物理意义不同,且同一优化目标会受到任务、飞行环境等的影响,本身的代价值变化也很大,这使得在不同情况下,不同优化目标代价值在相对重要性方面缺乏可比性;如何直观反映决策者对各个目标趋优满意程度的主观意愿,是合理建立性能指标的关键和难点。针对这一问题,对性能指标中的子目标函数进行模糊隶属化,对多目标综合采用模糊优化策略,改进了现有指标存在的不足,解决了航迹规划多目标综合优化的困难。结合实际算例,验证了提出的新性能指标的正确性及方法的合理性。
It is most important to develop a reasonable cost performance index for multi-Objective path planning. Based on Voronoi diagram method for the path planning,this paper studied the synthesis method of the multi-objective cost performance index. According to the application of the cost performance index to the path planning based on Voronoi diagram method,this paper analyzed the cost performance index which had been referred to at present. The analysis show out the insufficiency of the cost performance index at present that it is difficult to synthesize sub-objective functions because of the great disparity of the sub-objective functions. Thus,a new approach was developed to optimize the performance index with the multi-objective fuzzy optimization strategy,and an improved performance index was established,which could coordinate the weight conflict of the sub-objective functions. Finally,according to the example,the validity and rationality of the new performance index has been proved.
出处
《微计算机信息》
2010年第31期172-174,193,共4页
Control & Automation
关键词
航迹规划
航迹代价
性能指标
多目标优化
path planning
flight path cost
performance index
multi-objective Optimization.
