针对Back Propagation(BP)神经网络建立的动力电池荷电状态(State of Charge,简称SOC)估计模型存在的精度、稳定性等问题,使用遗传算法(Genetic Algorithm,简称GA),对SOC估计网络模型进行优化。使用以轮盘赌算法配合最佳个体保存法做为...针对Back Propagation(BP)神经网络建立的动力电池荷电状态(State of Charge,简称SOC)估计模型存在的精度、稳定性等问题,使用遗传算法(Genetic Algorithm,简称GA),对SOC估计网络模型进行优化。使用以轮盘赌算法配合最佳个体保存法做为遗传算法核心选择算法,避免传统选择算法中最佳个体可能丢失的情况。实验对象选用新能源氢电混动重卡4X2/6X2T FCV的辅助动力电池包。模型考虑了环境温度、放电电压、放电倍率以及直流内阻的影响,对不同隐含层数量对模型估计精度的影响进行了对比分析。测试结果表示,使用遗传算法优化后的神经网络SOC估计模型的精度和稳定性得到大幅提升。展开更多
An arylhydrazono-containing coumarin derivative(1) can undergo chemical conversions in two modes. When in the presence of Cu^(2+), a Cu^(2+)-promoted cyclization reaction was observed in aqueous acetonitrile and gives...An arylhydrazono-containing coumarin derivative(1) can undergo chemical conversions in two modes. When in the presence of Cu^(2+), a Cu^(2+)-promoted cyclization reaction was observed in aqueous acetonitrile and gives compound 2, while a ring-opening reaction occurs to give compound 3 in the absence of Cu^(2+). Both 2 and 3 were characterized by single-crystal X-ray diffraction. Compound 2 crystallizes in monoclinic C2/c space group with a = 26.606(5), b = 5.8142(12), c = 26.906(5) ?, β = 103.41(3)°, Z = 8, F(000) = 1696, μ = 0.186 mm^(-1), R = 0.0487 and wR = 0.1129. Compound 3 crystallizes in monoclinic P21/n space group with a = 9.917(2), b = 13.644(3), c = 15.912(3) ?, β = 95.38(3)°, Z = 4, F(000) = 896, μ = 0.182 mm^(-1), R = 0.0769 and w R = 0.1617. The spectroscopic studies show that compound 2 exhibits strong fluorescence emission.展开更多
An AIE-active azine derivative(1)was facilely synthesized by aldehyde-amine condensation of 2-hydroxy-1-naphthaldehyde and 3-methyl-2-benzothiazolinone hydrazone.It crystallizes in the monoclinic space group P21/n wit...An AIE-active azine derivative(1)was facilely synthesized by aldehyde-amine condensation of 2-hydroxy-1-naphthaldehyde and 3-methyl-2-benzothiazolinone hydrazone.It crystallizes in the monoclinic space group P21/n with a=8.2176(5),b=13.1733(7),c=14.5731(8)Å,β=90.521(5)º,and Z=4.Compound 1 exhibits aggregation-induced emission characteristics.In dilute solution,it is non-emissive,while strong emission was observed in the aqueous medium as a result of the molecular aggregation in poor solvent.The powder and crystals of 1 also exhibit strong fluorescence.In its crystal lattice,the molecules stack in a face-to-face style,but there is noπ-πstacking interaction due to the long distance between adjacent molecules.It is the loose stacking mode that blocks the nonradiative decay channel resulting in its AIE effect.展开更多
基金supported by the Natural Science Foundation of Hainan Province(No.20162028)the Program for Innovative Research Team in University(IRT-16R19)
文摘An arylhydrazono-containing coumarin derivative(1) can undergo chemical conversions in two modes. When in the presence of Cu^(2+), a Cu^(2+)-promoted cyclization reaction was observed in aqueous acetonitrile and gives compound 2, while a ring-opening reaction occurs to give compound 3 in the absence of Cu^(2+). Both 2 and 3 were characterized by single-crystal X-ray diffraction. Compound 2 crystallizes in monoclinic C2/c space group with a = 26.606(5), b = 5.8142(12), c = 26.906(5) ?, β = 103.41(3)°, Z = 8, F(000) = 1696, μ = 0.186 mm^(-1), R = 0.0487 and wR = 0.1129. Compound 3 crystallizes in monoclinic P21/n space group with a = 9.917(2), b = 13.644(3), c = 15.912(3) ?, β = 95.38(3)°, Z = 4, F(000) = 896, μ = 0.182 mm^(-1), R = 0.0769 and w R = 0.1617. The spectroscopic studies show that compound 2 exhibits strong fluorescence emission.
基金supported by the Natural Science Foundation of Hainan Province(No.20162028)the Program for Innovative Research Team in University(IRT-16R19)。
文摘An AIE-active azine derivative(1)was facilely synthesized by aldehyde-amine condensation of 2-hydroxy-1-naphthaldehyde and 3-methyl-2-benzothiazolinone hydrazone.It crystallizes in the monoclinic space group P21/n with a=8.2176(5),b=13.1733(7),c=14.5731(8)Å,β=90.521(5)º,and Z=4.Compound 1 exhibits aggregation-induced emission characteristics.In dilute solution,it is non-emissive,while strong emission was observed in the aqueous medium as a result of the molecular aggregation in poor solvent.The powder and crystals of 1 also exhibit strong fluorescence.In its crystal lattice,the molecules stack in a face-to-face style,but there is noπ-πstacking interaction due to the long distance between adjacent molecules.It is the loose stacking mode that blocks the nonradiative decay channel resulting in its AIE effect.
