A novel network control method based on trophallaxis mechanism is applied to the formation flight problem for multiple unmanned aerial vehicles(UAVs).Firstly,the multiple UAVs formation flight system based on trophall...A novel network control method based on trophallaxis mechanism is applied to the formation flight problem for multiple unmanned aerial vehicles(UAVs).Firstly,the multiple UAVs formation flight system based on trophallaxis network control is given.Then,the model of leader-follower formation flight with a virtual leader based on trophallaxis network control is presented,and the influence of time delays on the network performance is analyzed.A particle swarm optimization(PSO)-based formation controller is proposed for solving the leader-follower formation flight system.The proposed method is applied to five UAVs for achieving a 'V' formation,and a series of experimental results show its feasibility and validity.The proposed control algorithm is also a promising control strategy for formation flight of multiple unmanned underwater vehicles(UUVs),unmanned ground vehicles(UGVs),missiles and satellites.展开更多
针对常用进港航班排序数学模型(总延迟时间最小和总延迟成本最小)中存在的问题,选取空中延误成本、旅客延误成本、后续延误成本以及环境污染成本4个指标综合建立一种改进的总延迟成本最小数学模型。在分析已有的基于模拟退火的粒子群算...针对常用进港航班排序数学模型(总延迟时间最小和总延迟成本最小)中存在的问题,选取空中延误成本、旅客延误成本、后续延误成本以及环境污染成本4个指标综合建立一种改进的总延迟成本最小数学模型。在分析已有的基于模拟退火的粒子群算法(SA-PSO:particle swarm optimization based on simulated annealing)优化进港航班排序时寻优能力不足、收敛速度慢的基础上,采用一种线性微分递减(LDD:linear differential decrease)的退火策略,从而可以有效地解决进港航班排序问题。实验结果表明,与FCFS(first come first serve)、PSO以及SA-PSO算法相比,LDD-SA-PSO算法在进港航班优化问题上具有较好的寻优能力和收敛速度,同时改进数学模型中参数选择对优化结果也具有明显影响。展开更多
针对传统的储能调度策略难以取得经济最优的不足,建立了考虑电池寿命损耗的光储充电站储能系统调度模型。首先通过OpenDSS(open distribution system simulation)建立准确的储能、光伏及电动汽车(electric vehicle,EV)充电的底层模型,...针对传统的储能调度策略难以取得经济最优的不足,建立了考虑电池寿命损耗的光储充电站储能系统调度模型。首先通过OpenDSS(open distribution system simulation)建立准确的储能、光伏及电动汽车(electric vehicle,EV)充电的底层模型,模拟充电站日运行情况。其次结合雨流计数法求解出不同运行工况下储能系统的运行年限并折算为电池损耗成本计入优化目标,以此实现光储充电站日充电成本最小。最后利用改进后的粒子群优化(particle swarm optimization,PSO)算法对优化问题进行求解得到经济最优的储能容量配置以及该配置下的储能日运营方案,通过算例仿真验证了模型的可行性并分析了不同储能运营方案对收益与组成成本的影响。展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.61273054,60975072 and 60604009)the National Basic Research Program of China("973"Project)(Grant No.2013CB035503)+1 种基金the Program for New Century Excellent Talents in University of China(Grant No.NCET-10-0021)the Aeronautical Foundation of China(Grant No.20115151019)
文摘A novel network control method based on trophallaxis mechanism is applied to the formation flight problem for multiple unmanned aerial vehicles(UAVs).Firstly,the multiple UAVs formation flight system based on trophallaxis network control is given.Then,the model of leader-follower formation flight with a virtual leader based on trophallaxis network control is presented,and the influence of time delays on the network performance is analyzed.A particle swarm optimization(PSO)-based formation controller is proposed for solving the leader-follower formation flight system.The proposed method is applied to five UAVs for achieving a 'V' formation,and a series of experimental results show its feasibility and validity.The proposed control algorithm is also a promising control strategy for formation flight of multiple unmanned underwater vehicles(UUVs),unmanned ground vehicles(UGVs),missiles and satellites.
文摘针对常用进港航班排序数学模型(总延迟时间最小和总延迟成本最小)中存在的问题,选取空中延误成本、旅客延误成本、后续延误成本以及环境污染成本4个指标综合建立一种改进的总延迟成本最小数学模型。在分析已有的基于模拟退火的粒子群算法(SA-PSO:particle swarm optimization based on simulated annealing)优化进港航班排序时寻优能力不足、收敛速度慢的基础上,采用一种线性微分递减(LDD:linear differential decrease)的退火策略,从而可以有效地解决进港航班排序问题。实验结果表明,与FCFS(first come first serve)、PSO以及SA-PSO算法相比,LDD-SA-PSO算法在进港航班优化问题上具有较好的寻优能力和收敛速度,同时改进数学模型中参数选择对优化结果也具有明显影响。
文摘针对传统的储能调度策略难以取得经济最优的不足,建立了考虑电池寿命损耗的光储充电站储能系统调度模型。首先通过OpenDSS(open distribution system simulation)建立准确的储能、光伏及电动汽车(electric vehicle,EV)充电的底层模型,模拟充电站日运行情况。其次结合雨流计数法求解出不同运行工况下储能系统的运行年限并折算为电池损耗成本计入优化目标,以此实现光储充电站日充电成本最小。最后利用改进后的粒子群优化(particle swarm optimization,PSO)算法对优化问题进行求解得到经济最优的储能容量配置以及该配置下的储能日运营方案,通过算例仿真验证了模型的可行性并分析了不同储能运营方案对收益与组成成本的影响。