We present an ameliorated arctangent algorithm based on phase-locked loop for digital Doppler signal processing,utilized within the heterodyne detection system. We define the error gain factor given by the approximati...We present an ameliorated arctangent algorithm based on phase-locked loop for digital Doppler signal processing,utilized within the heterodyne detection system. We define the error gain factor given by the approximation of Taylor expansion by means of a comparison of the measured values and true values. Exact expressions are derived for the amplitude error of two in-phase & quadrature signals and the frequency error of the acousto-optic modulator. Numerical simulation results and experimental results make it clear that the dynamic instability of the intermediate frequency signals leads to cumulative errors, which will spiral upward. An improved arctangent algorithm for the heterodyne detection is proposed to eliminate the cumulative errors and harmonic components. Depending on the narrow-band filter, our experiments were performed to realize the detectable displacement of 20 nm at a detection distance of 20 m. The aim of this paper is the demonstration of the optimized arctangent algorithm as a powerful approach to the demodulation algorithm, which will advance the signal-to-noise ratio and measurement accuracy of the heterodyne detection system.展开更多
This paper presents four different hybrid genetic algorithms for network design problem in closed loop supply chain. They are compared using a complete factorial experiment with two factors, viz. problem size and algo...This paper presents four different hybrid genetic algorithms for network design problem in closed loop supply chain. They are compared using a complete factorial experiment with two factors, viz. problem size and algorithm. Based on the significance of the factor “algorithm”, the best algorithm is identified using Duncan’s multiple range test. Then it is compared with a mathematical model in terms of total cost. It is found that the best hybrid genetic algorithm identified gives results on par with the mathematical model in statistical terms. So, the best algorithm out of four algorithm proposed in this paper is proved to be superior to all other algorithms for all sizes of problems and its performance is equal to that of the mathematical model for small size and medium size problems.展开更多
A routing algorithm for distributed optimal double loop computer networks is proposed and analyzed. In this paper, the routing algorithm rule is described, and the procedures realizing the algorithm are given. The pro...A routing algorithm for distributed optimal double loop computer networks is proposed and analyzed. In this paper, the routing algorithm rule is described, and the procedures realizing the algorithm are given. The proposed algorithm is shown to be optimal and robust for optimal double loop. In the absence of failures,the algorithm can send a packet along the shortest path to destination; when there are failures,the packet can bypasss failed nodes and links.展开更多
针对船舶航行中横摇运动控制问题,提出一种基于反步法与径向基函数神经网络(Radial Basis Function Neural Network,RBFNN)的船舶鳍减摇控制律,以实现船舶自适应减摇控制。首先,基于反步法设计获得PD型的控制器,并使用闭环增益成形算法...针对船舶航行中横摇运动控制问题,提出一种基于反步法与径向基函数神经网络(Radial Basis Function Neural Network,RBFNN)的船舶鳍减摇控制律,以实现船舶自适应减摇控制。首先,基于反步法设计获得PD型的控制器,并使用闭环增益成形算法确定其初始参数值;其次,引入RBFNN对PD控制器的初始参数进行优化,以经归一化处理的船舶横摇角度和横摇角速度作为网络输入,动态调节控制参数,从而实现自适应控制;最后,通过在随机波环境下的数值仿真试验,验证了所提控制器的减摇性能。仿真结果表明,该控制器能有效抑制船舶横摇运动,减摇率超过94%,并展现出优异的自适应能力。因此,本研究提出的控制策略可为船舶横摇运动控制提供一种高效且实用的解决方案。展开更多
针对分布式光伏出力的不确定性对新型配电网合环运行产生的影响,文中提出了一种考虑合环电流约束的新型配电网负荷均衡分布鲁棒优化模型。考虑新型配电网合环电流的稳态约束和暂态约束,建立了新型配电网负荷均衡优化模型。在此基础上,采...针对分布式光伏出力的不确定性对新型配电网合环运行产生的影响,文中提出了一种考虑合环电流约束的新型配电网负荷均衡分布鲁棒优化模型。考虑新型配电网合环电流的稳态约束和暂态约束,建立了新型配电网负荷均衡优化模型。在此基础上,采用K-means聚类对分布式光伏出力历史数据进行聚类,得到具有代表性的典型场景,同时考虑1-范数和∞-范数对置信区间的约束,建立考虑合环电流约束的新型配电网负荷均衡分布鲁棒优化模型。最后采用列与约束生成(column and constraint generation,C&CG)算法对模型进行求解,在改进的IEEE-99节点上进行算例分析,验证了文中所提模型的有效性。展开更多
In order to improve our military ’s level of intelligent accusation decision-making in future intelligent joint warfare, this paper studies operation loop recommendation methods for kill web based on the fundamental ...In order to improve our military ’s level of intelligent accusation decision-making in future intelligent joint warfare, this paper studies operation loop recommendation methods for kill web based on the fundamental combat form of the future, i.e.,“web-based kill,” and the operation loop theory. Firstly, we pioneer the operation loop recommendation problem with operation ring quality as the objective and closed-loop time as the constraint, and construct the corresponding planning model.Secondly, considering the case where there are multiple decision objectives for the combat ring recommendation problem,we propose for the first time a multi-objective optimization algorithm, the multi-objective ant colony evolutionary algorithm based on decomposition(MOACEA/D), which integrates the multi-objective evolutionary algorithm based on decomposition(MOEA/D) with the ant colony algorithm. The MOACEA/D can converge the optimal solutions of multiple single objectives nondominated solution set for the multi-objective problem. Finally,compared with other classical multi-objective optimization algorithms, the MOACEA/D is superior to other algorithms superior in terms of the hyper volume(HV), which verifies the effectiveness of the method and greatly improves the quality and efficiency of commanders’ decision-making.展开更多
基金supported by Key Research Program of Frontier Science,Chinese Academy of Sciences(Grant No.QYZDB-SSW-SLH014)the Yong Scientists Fund of the National Natural Science Foundation of China(Grant No.61205143)
摘要We present an ameliorated arctangent algorithm based on phase-locked loop for digital Doppler signal processing,utilized within the heterodyne detection system. We define the error gain factor given by the approximation of Taylor expansion by means of a comparison of the measured values and true values. Exact expressions are derived for the amplitude error of two in-phase & quadrature signals and the frequency error of the acousto-optic modulator. Numerical simulation results and experimental results make it clear that the dynamic instability of the intermediate frequency signals leads to cumulative errors, which will spiral upward. An improved arctangent algorithm for the heterodyne detection is proposed to eliminate the cumulative errors and harmonic components. Depending on the narrow-band filter, our experiments were performed to realize the detectable displacement of 20 nm at a detection distance of 20 m. The aim of this paper is the demonstration of the optimized arctangent algorithm as a powerful approach to the demodulation algorithm, which will advance the signal-to-noise ratio and measurement accuracy of the heterodyne detection system.
摘要This paper presents four different hybrid genetic algorithms for network design problem in closed loop supply chain. They are compared using a complete factorial experiment with two factors, viz. problem size and algorithm. Based on the significance of the factor “algorithm”, the best algorithm is identified using Duncan’s multiple range test. Then it is compared with a mathematical model in terms of total cost. It is found that the best hybrid genetic algorithm identified gives results on par with the mathematical model in statistical terms. So, the best algorithm out of four algorithm proposed in this paper is proved to be superior to all other algorithms for all sizes of problems and its performance is equal to that of the mathematical model for small size and medium size problems.
摘要A routing algorithm for distributed optimal double loop computer networks is proposed and analyzed. In this paper, the routing algorithm rule is described, and the procedures realizing the algorithm are given. The proposed algorithm is shown to be optimal and robust for optimal double loop. In the absence of failures,the algorithm can send a packet along the shortest path to destination; when there are failures,the packet can bypasss failed nodes and links.
摘要针对船舶航行中横摇运动控制问题,提出一种基于反步法与径向基函数神经网络(Radial Basis Function Neural Network,RBFNN)的船舶鳍减摇控制律,以实现船舶自适应减摇控制。首先,基于反步法设计获得PD型的控制器,并使用闭环增益成形算法确定其初始参数值;其次,引入RBFNN对PD控制器的初始参数进行优化,以经归一化处理的船舶横摇角度和横摇角速度作为网络输入,动态调节控制参数,从而实现自适应控制;最后,通过在随机波环境下的数值仿真试验,验证了所提控制器的减摇性能。仿真结果表明,该控制器能有效抑制船舶横摇运动,减摇率超过94%,并展现出优异的自适应能力。因此,本研究提出的控制策略可为船舶横摇运动控制提供一种高效且实用的解决方案。
摘要针对分布式光伏出力的不确定性对新型配电网合环运行产生的影响,文中提出了一种考虑合环电流约束的新型配电网负荷均衡分布鲁棒优化模型。考虑新型配电网合环电流的稳态约束和暂态约束,建立了新型配电网负荷均衡优化模型。在此基础上,采用K-means聚类对分布式光伏出力历史数据进行聚类,得到具有代表性的典型场景,同时考虑1-范数和∞-范数对置信区间的约束,建立考虑合环电流约束的新型配电网负荷均衡分布鲁棒优化模型。最后采用列与约束生成(column and constraint generation,C&CG)算法对模型进行求解,在改进的IEEE-99节点上进行算例分析,验证了文中所提模型的有效性。
基金supported by the National Natural Science Foundation of China (72071206,71690233)the Science and Technology Innovation Program of Hunan Province (2020RC4046)。
摘要In order to improve our military ’s level of intelligent accusation decision-making in future intelligent joint warfare, this paper studies operation loop recommendation methods for kill web based on the fundamental combat form of the future, i.e.,“web-based kill,” and the operation loop theory. Firstly, we pioneer the operation loop recommendation problem with operation ring quality as the objective and closed-loop time as the constraint, and construct the corresponding planning model.Secondly, considering the case where there are multiple decision objectives for the combat ring recommendation problem,we propose for the first time a multi-objective optimization algorithm, the multi-objective ant colony evolutionary algorithm based on decomposition(MOACEA/D), which integrates the multi-objective evolutionary algorithm based on decomposition(MOEA/D) with the ant colony algorithm. The MOACEA/D can converge the optimal solutions of multiple single objectives nondominated solution set for the multi-objective problem. Finally,compared with other classical multi-objective optimization algorithms, the MOACEA/D is superior to other algorithms superior in terms of the hyper volume(HV), which verifies the effectiveness of the method and greatly improves the quality and efficiency of commanders’ decision-making.