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APFD：面向移动轨迹大数据的出租车路径推荐方法 Research Article

陈卫彬1,3,陈杨杨1,2,张亚1,2

《信息与电子工程前沿（英文）》 2022年第23卷第10期页码 1511-1521 doi: 10.1631/FITEE.2100476

摘要：

本文研究了连续反馈方法在有限时间内同时实现路径跟踪和沿期望轨道编队运动控制的应用。假设虚拟领导者和跟随者之间的拓扑结构是有方向的。设计了一种称为障碍函数的附件条件，使所有智能体在一个有限的区域内移动。首先，基于障碍函数和反步法，设计了一种新型的连续有限时间路径跟踪控制算法。然后，通过将路径跟踪误差视为扰动，设计了一种新型的连续有限时间编队控制算法。详细研究了所得系统的稳定时间特性，并对所提策略进行仿真验证。

关键词：有限时间；协同路径跟踪；多智能体系统；障碍函数

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基于离散系统滑模控制的有限时间领导—跟随一致性 Research Article

宋睿卓1,2,邢适1,2,许镇3

《信息与电子工程前沿（英文）》 2022年第23卷第7期页码 1057-1068 doi: 10.1631/FITEE.2100565

摘要：研究了离散时间二阶多智能体系统在外部干扰约束下的有限时间领导—跟随一致性问题。首先利用自适应滑模控制理论，设计了一种新的有限时间一致性方案。自适应控制律是在传统滑模趋近律基础上改进设计的，其优点是减少抖振并保持对干扰的不变性。此外，通过给出一个离散李雅普诺夫函数，证明了离散时间二阶多智能体系统的有限时间稳定性。最后，数值模拟结果验证了理论分析的有效性。

关键词：有限时间；领导—跟随一致性；自适应滑模控制；多智能体系统

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具有区域约束的一阶多智能体系统的有限时间编队控制 Research Articles

杨正全1,潘小芳1,张青1,陈增强2

《信息与电子工程前沿（英文）》 2021年第22卷第1期页码 1-140 doi: 10.1631/FITEE.2000177

摘要：研究具有区域约束的多智能体系统的有限时间编队控制问题。多智能体具有一阶动力学和一个共同目标区域。提出一种利用局部信息和交互作用的控制算法。如果通信图是无向连通的以及所设计框架是刚性的，证明该控制器可用于解决具有目标区域的编队问题。该控制算法可控制所有智能体在有限时间内进入所需区域，同时达到并保持所需队形。最后，给出一个数值例子说明算法的有效性。

关键词：有限时间编队；多智能体系统；渐进收敛；约束集；李雅普诺夫定理

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Optimization of the power, efficiency and ecological function for an air-standard irreversible Dual-Miller cycle

Zhixiang WU, Lingen CHEN, Yanlin GE, Fengrui SUN

《能源前沿（英文）》 2019年第13卷第3期页码 579-589 doi: 10.1007/s11708-018-0557-z

摘要： This paper establishes an irreversible Dual-Miller cycle (DMC) model with the heat transfer (HT) loss, friction loss (FL) and other internal irreversible losses. To analyze the effects of the cut-off ratio ( ) and Miller cycle ratio ( ) on the power output ( ), thermal efficiency ( ) and ecological function ( ), obtain the optimal and optimal , and compare the performance characteristics of DMC with its simplified cycles and with different optimization objective functions, the , and of irreversible DMC are analyzed and optimized by applying the finite time thermodynamic (FTT) theory. Expressions of , and are derived. The relationships among , , and compression ratio ( ) are obtained by numerical examples. The effects of and on , , , maximum power output ( ), maximum efficiency ( ) and maximum ecological function ( ) are analyzed. Performance differences among the DMC, the Otto cycle (OC), the Dual cycle (DDC), and the Otto-Miller cycle (OMC) are compared for fixed design parameters. Performance characteristics of irreversible DMC with the choice of , and as optimization objective functions are analyzed and compared. The results show that the irreversible DMC engine can reach a twice-maximum power, a twice-maximum efficiency, and a twice-maximum ecological function, respectively. Moreover, when choosing as the optimization objective, there is a 5.2% of improvement in while there is a drop of only 2.7% in compared to choosing as the optimization objective. However, there is a 5.6% of improvement in while there is a drop of only 1.3% in compared to choosing as the optimization objective.

关键词： finite-time thermodynamics Dual-Miller cycle power output thermal efficiency ecological function

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不对称时变状态约束下非线性系统自适应有限时间事件触发控制 Research Article

魏岩1,罗均2,严怀成3,王曰英2

《信息与电子工程前沿（英文）》 2021年第22卷第12期页码 1551-1684 doi: 10.1631/FITEE.2000692

摘要：研究了状态约束下多输入多输出不确定非线性系统的自适应有限时间事件触发控制问题。为防止系统状态违反非对称时变约束，建立tan型非线性映射函数，将所考虑的系统转化为等价无约束系统。在虚拟控制信号中引入光滑切换函数，以避免传统有限时间动态面控制方法在零附近的奇异现象。同时，采用模糊逻辑系统补偿未知非线性函数。引入合适的事件触发机制确定何时控制律更新。利用李雅普诺夫稳定性理论分析，证明闭环系统是半全局最终有限时间稳定的，且不违反状态约束。最后，通过仿真实例验证了所设计控制方法的有效性。

关键词：事件触发控制；非线性映射；自适应模糊控制；有限时间；状态约束

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具有状态依赖随机脉冲的布尔网络稳定性研究

沈雅雯,郭宇骞,桂卫华

《信息与电子工程前沿（英文）》 2021年第22卷第2期页码 141-286 doi: 10.1631/FITEE.1900454

摘要：研究了具有由状态和随机因素触发脉冲的布尔网络的稳定性。采用混合指数模型描述脉冲神经网络。首先，得到前向完备性的几个充要条件。其次，基于概率布尔网络的稳定性准则和前向完备性准则，给出以概率1有限时间稳定性和依分布渐近稳定性的充要条件。讨论了这两种稳定性之间的关系。最后，给出算例和时域仿真结果。

关键词：脉冲布尔网络；前向完备性；以概率1有限时间稳定性；依分布渐近稳定性

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Multi-objective optimization in a finite time thermodynamic method for dish-Stirling by branch and bound

Mohammad Reza NAZEMZADEGAN, Alibakhsh KASAEIAN, Somayeh TOGHYANI, Mohammad Hossein AHMADI, R. SAIDUR, Tingzhen MING

《能源前沿（英文）》 2020年第14卷第3期页码 649-665 doi: 10.1007/s11708-018-0548-0

摘要： There are various analyses for a solar system with the dish-Stirling technology. One of those analyses is the finite time thermodynamic analysis by which the total power of the system can be obtained by calculating the process time. In this study, the convection and radiation heat transfer losses from collector surface, the conduction heat transfer between hot and cold cylinders, and cold side heat exchanger have been considered. During this investigation, four objective functions have been optimized simultaneously, including power, efficiency, entropy, and economic factors. In addition to the four-objective optimization, three-objective, two-objective, and single-objective optimizations have been done on the dish-Stirling model. The algorithm of multi-objective particle swarm optimization (MOPSO) with post-expression of preferences is used for multi-objective optimizations while the branch and bound algorithm with pre-expression of preferences is used for single-objective and multi-objective optimizations. In the case of multi-objective optimizations with post-expression of preferences, Pareto optimal front are obtained, afterward by implementing the fuzzy, LINMAP, and TOPSIS decision making algorithms, the single optimum results can be achieved. The comparison of the results shows the benefits of MOPSO in optimizing dish Stirling finite time thermodynamic equations.

关键词： dish-Stirling finite time model branch and bound algorithm multi-objective particle swarm optimization (MOPSO)

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Improved numerical method for time domain dynamic structure-foundation interaction analysis based onscaled boundary finite element method

DU Jianguo, LIN Gao

《结构与土木工程前沿（英文）》 2008年第2卷第4期页码 336-342 doi: 10.1007/s11709-008-0054-2

摘要： Based on the reduced set of base function in scaled boundary finite element method (SBFEM), an improved time domain numerical approach for the dynamic structure-foundation interaction analysis was proposed. With reasonable choice of the number of base functions, the degrees of freedom on the structure-foundation interface were reduced and the associated computation for the calculation of convolution integral was greatly reduced. The results of this proposed approach applied to the calculation of a gravity dam and an arch dam. The acceleration frequency response functions were calculated and the influences affected by different reduced set of base functions as well as full set were compared. It was found that a higher degree of reduced set of base functions resulted in a significant increase of computational efficiency but a little bit of loss in accuracy. When the reduced set was decreased by 60%, the efficiency may be increased to up to five times, while the loss of accuracy of peak value of response will be less than 4%. It may be concluded that the proposed approach is suitable for large-scale structure-foundation interaction analysis.

关键词： structure-foundation interface computational efficiency different suitable numerical approach

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Concurrent fatigue crack growth simulation using extended finite element method

Zizi LU, Yongming LIU,

《结构与土木工程前沿（英文）》 2010年第4卷第3期页码 339-347 doi: 10.1007/s11709-010-0078-2

摘要： In this paper, a concurrent simulation framework for fatigue crack growth analysis is proposed using a novel small time scale model for fatigue mechanism analysis and the extended finite element method (X-FEM) for fatigue crack growth simulation. The proposed small time scale fatigue model does not require the cycle counting as those using the classical fatigue analysis methods and can be performed concurrently with structural/mechanical analysis. The X-FEM greatly facilitates crack growth simulation without remeshing requirements ahead of the crack tip as in the classical finite element method. The basic concept and theory of X-FEM was briefly introduced and numerical predictions of stress intensity factors are verified with reference solutions under both uniaxial and multiaxial loadings. The small time scale fatigue model is integrated into the numerical simulation algorithm for concurrent fatigue crack growth analysis. Model predictions are compared with available experimental observations for model validation.

关键词： small time scale model extended finite element method (X-FEM) crack growth multiaxial

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Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon

Bingnan REN

《化学科学与工程前沿（英文）》 2011年第5卷第2期页码 203-208 doi: 10.1007/s11705-010-0571-0

摘要： The kinetics and the thermodynamics of phosphine (PH ) adsorption on the modified activated carbon have been explained for the adsorption process of PH . This study investigated the kinetic and thermodynamic properties of PH adsorption on the activated carbon impregnated with 5% HCl solution. The thermodynamic properties including PH adsorption isotherm and adsorption heat were separately investigated at 20°C, 70°C, 90°C. The results showed that the Freundlich-type isotherm equation described the isotherms well. The adsorption capacity increased with increasing temperature between 20°C and 70°C. Between 70°C and 90°C, the adsorption capacity decreased obviously with increasing temperature. The adsorption capacity reached the maximum at 70°C. By analyzing the results of the kinetics and the thermodynamics, we found that the adsorption of PH was dominated by physical adsorption at the lower temperature (20°C). Then with increasing temperature, chemical adsorption gradually dominated in the adsorption process. The adsorption capacity decreased at above 70°C is due to the exothermic effects in the process of adsorption.

关键词： adsorption PH₃ activated carbon kinetics thermodynamics

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Adsorption of herring sperm DNA onto pine sawdust biochar: Thermodynamics and site energy distribution

《环境科学与工程前沿（英文）》 2022年第16卷第11期 doi: 10.1007/s11783-022-1579-7

摘要：

● Adsorption of environmental deoxyribonucleic acid on biochar was studied.

关键词： Environmental deoxyribonucleic acid Antibiotic resistance genes Biochar Adsorption thermodynamics

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Self-catalytic pyrolysis thermodynamics of waste printed circuit boards with co-existing metals

《环境科学与工程前沿（英文）》 2022年第16卷第11期 doi: 10.1007/s11783-022-1581-0

摘要：

● The co-existing metals in WPCBs has positive catalytic influence in pyrolysis.

关键词： Waste printed circuit board Catalyst Pyrolysis Kinetics

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Latest progress in numerical simulations on multiphase flow and thermodynamics in production of natural

Lin ZUO, Lixia SUN, Changfu YOU

《能源前沿（英文）》 2009年第3卷第2期页码 152-159 doi: 10.1007/s11708-009-0017-x

摘要： Natural gas hydrates are promising potential alternative energy resources. Some studies on the multiphase flow and thermodynamics have been conducted to investigate the feasibility of gas production from hydrate dissociation. The methods for natural gas production are analyzed and several models describing the dissociation process are listed and compared. Two prevailing models, one for depressurization and the other for thermal stimulation, are discussed in detail. A comprehensive numerical method considering the multiphase flow and thermodynamics of gas production from various hydrate-bearing reservoirs is required to better understand the dissociation process of natural gas hydrate, which would be of great benefit to its future exploration and exploitation.

关键词： numerical simulation natural gas hydrate dissociation thermodynamics multiphase flow

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Removal of Rhodamine B from aqueous solutions and wastewater by walnut shells: kinetics, equilibrium and thermodynamics

Jasmin Shah, M. Rasul Jan, Attaul Haq, Younas Khan

《化学科学与工程前沿（英文）》 2013年第7卷第4期页码 428-436 doi: 10.1007/s11705-013-1358-x

摘要： An adsorption study of Rhodamine B (RB) dye from aqueous solutions was carried out using walnut shells pretreated by different methods. In addition to the effects of the pretreatment, the effects of various parameters like pH, adsorbent dose, contact time, initial dye concentration and temperature on the adsorption of RB was studied. The adsorption process was highly pH dependent and a maximum adsorption was achieved at pH 3.0. The best fit for the rates of dye adsorption was a pseudo-second-order kinetic model with good correlation coefficients ( >0.99). Langmuir isotherms were used to determine that the maximum loading capacity of the different walnut shells and the RB capacities ranged from 1.451–2.292 mg·g . The dye adsorption was also evaluated thermodynamically. Positive standard enthalpy (? °) values were obtained indicating that the RB adsorption process is endothermic as well as ? ° and ? ° values showed that adsorption process is spontaneous with an increased randomness at the solid-liquid interface. Desorption studies were carried out to explore the feasibility of regenerating the used walnut shells and it was found that 97.71%–99.17% of the retained RB was recovered with 0.1 mol?L NaOH solution. The walnut shells were also successfully used to remove RB from industrial effluents.

关键词： Rhodamine B walnut shell adsorption kinetics isotherms regeneration

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Design and analysis of electrothermal metasurfaces

Xiu LIU, Zhuo LI, Zexiao WANG, Hyeong Seok YUN, Sheng SHEN

《能源前沿（英文）》 2023年第17卷第1期页码 134-140 doi: 10.1007/s11708-022-0841-9

摘要： Electrothermal metasurfaces have garnered considerable attention owing to their ability to dynamically control thermal infrared radiation. Although previous studies were mainly focused on metasurfaces with infinite unit cells, in practice, the finite-size effect can be a critical design factor for developing thermal metasurfaces with fast response and broad temperature uniformity. Here, we study the thermal metasurfaces consisting of gold nanorods with a finite array size, which can achieve a resonance close to that of the infinite case with only several periods. More importantly, such a small footprint due to the finite array size yields response time down to a nanosecond level. Furthermore, the number of the unit cells in the direction perpendicular to the axis of nanorods is found to be insensitive to the resonance and response time; thus, providing a tunable aspect ratio that can boost the temperature uniformity in the sub-Kelvin level.

关键词： modulated thermal infrared radiation metasurface nanosecond response time sub-Kelvin temperature uniformity finite size aspect ratio