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Research and Practice on the Engineering Management Method of Financial Informatization Project

Hong-feng Chai

《工程管理前沿（英文）》 2015年第2卷第2期页码 165-172 doi: 10.15302/J-FEM-2015036

摘要： From the perspective of systems engineering, this paper analyzes the characteristics of China’s bank card industry, including its accessibility, scale, and complexity. The author proposes a series of management methods for the financial informatization project by researching the general requirements of the financial information system and the characteristics and implementation of informatization in the bank card services. The paper concludes with an outlook on the future development of China’s bank card industry.

关键词： system engineering financial informatization engineering management method bank card informatization switching system

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Experimental investigation of a novel micro gas turbine with flexible switching function for distributedpower system

Xiaojing LV, Weilun ZENG, Xiaoyi DING, Yiwu WENG, Shilie WENG

《能源前沿（英文）》 2020年第14卷第4期页码 790-800 doi: 10.1007/s11708-020-0691-2

摘要： Micro gas turbine (MGT) is widely used in small-scale distributed power systems because of its low emissions and fuel flexibility. However, the under-utilization of its exhaust heat and the low electric efficiency are the main bottlenecks that restrict its application. Additionally, the flexible switching between the power generated by the MGT and the power grid is also a key factor for keeping the secure operation of a distributed power station. Therefore, this paper conducted some experimental investigations of a 30 kW MGT to provide reference solutions for the above issues. This MGT is located at Shanghai Jiao Tong University (SJTU), which is designed by the Gas Turbine Research Institute of SJTU, and is manufactured by a turbo-machinery factory in Chongqing, China. The demonstration prototype is mainly composed of a single stage centrifugal compressor, a radial turbine, a combustor, a high-speed permanent magnet generator, and a control system. The results show that the MGT can achieve steady operation at a low rotational speed from 10000 r/min to 34000 r/min in the case of using oil lubricated bearings, which can greatly reduce the economic cost compared with the use of air bearings. At the same time, the ignition success rate of combustion chamber (CC) reaches 98% at a low rotational speed, and a wide range of stable combustion area can be obtained, because of the novel design method of combustor by referencing the way applied in an axial flow aero-engine. The MGT generating set can achieve functions, such as starting up, ignition, stable operation, loaded operation, grid-connection and stopping. This system also can realize flexibly switching from the start motor mode to the generator mode, and from grid-connected mode to off-grid mode, because the innovative multi-state switching control system is adopted. The above research work can make our state master independent intellectual property rights of micro gas turbine, rather than continue to be subject to the technological monopoly of the developed states, which can provide theoretical and experimental support for the industrialization of MGT in China.

关键词： gas turbine flexible switching system control system distributed power system emission test

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Gained switching-based fuzzy sliding mode control for a discrete-time underactuated robotic system with

Hui LI, Ruiqin LI, Jianwei ZHANG

《机械工程前沿（英文）》 2021年第16卷第2期页码 353-362 doi: 10.1007/s11465-020-0620-4

摘要： This study proposes a gained switching-based discrete-time sliding mode control method to address the chattering issue in disturbed discrete-time systems, which suffer from various unknown uncertainties. Through the new structure of the designed reaching law, the proposed method can effectively increase the convergence speed while guaranteeing chattering-free control. The performance of controlling underactuated robotic systems can be further improved by the adoption of fuzzy logic to perform adaptive online hyper-parameter tuning. In addition, an underactuated robotic system with uncertainties is studied to validate the effectiveness of the proposed reaching law. Results reveal the dynamic performance and robustness of the proposed reaching law in the studied system and prove the proposed method’s superiority over other state-of-the-art methods.

关键词： sliding-mode control robot control discrete-time uncertain systems fuzzy logic

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国内首台ATM交换机研制及其组网实践

雷振明

《中国工程科学》 2000年第2卷第2期页码 53-55

摘要：

国内首台ATM（异步转送方式）交换机BTC-9500的研制于1995年完成，并配合国内宽带试验网络的建设，进行了大量的组网试验、设计改进和发展工作。目前，该设备已经由国内最大的电信设备制造商之一——上海贝尔公司生产销售，并且用于装备中国电信宽带骨干网的全部核心节点。根据组网实践中发现的问题，提出了在同一个交换结构内同时实现ATM信元交换和IP数据报交换的方案，并在BTC-9500中予以实现，达到了大大节省设备、简化网络和提高网络速度的多重目的，将研究范围逐渐拓宽到更大的宽带通信领域，提出了对于新一代电信网络发展的一些看法。

关键词：通信交换异步转送方式（ATM）

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A pulsed switching peroxi-coagulation process to control hydroxyl radical production and to enhance 2,4

Yaobin Lu, Songli He, Dantong Wang, Siyuan Luo, Aiping Liu, Haiping Luo, Guangli Liu, Renduo Zhang

《环境科学与工程前沿（英文）》 2018年第12卷第5期 doi: 10.1007/s11783-018-1070-7

摘要：

• A new pulsed switching peroxi-coagulation (PSPC) system was developed.

• The EC_T for 2,4-D removal in the PSPC was lower than that in the EF.

• The iron consumption for 2,4-D removal in the PSPC was lower than that in the PC.

关键词： Pulsed switching peroxi-coagulation system Energy consumption Hydroxyl radical production 2 4- Dichlorophenoxyacetic acid

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Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials

Linxiang WANG, Roderick MELNIK, Fuzai LV

《机械工程前沿（英文）》 2011年第6卷第3期页码 287-291 doi: 10.1007/s11465-011-0230-2

摘要：

The dynamic responses of ferroelectric materials upon external mechanical and electrical stimulations are inherently nonlinear and coupled. In the current paper, a macroscopic differential model is constructed for the coupled hysteretic dynamics via modeling the orientation switching induced in the materials. A non-convex potential energy is constructed with both mechanic and electric field contributions. The governing equations are formulated as nonlinear ordinary differential equations by employing the Euler-Lagrange equation, and can be easily recast into a state space form. Hysteresis loops associated with stress induced polarization switching and butterfly-shaped behavior in ferroelectric materials are also successfully captured. The effects of mechanical loadings on the electrically induced switching are numerically investigated, as well as the mechanically-induced switching with various bias electric fields.

关键词： differential model state space electromechanical switching butterfly effects hysteresis

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Multi-objective dynamic optimization model for China’s road transport energy technology switching

Dan GAO , Zheng LI , Feng FU , Linwei MA

《能源前沿（英文）》 2009年第3卷第3期页码 247-253 doi: 10.1007/s11708-009-0048-3

摘要： Deducting the future switching of the road transport energy technology is one of the key preconditions for relative technology development planning. However, one of the difficulties is to address the issue of multi-objective and conflicting constrains, e.g., minimizing the climate mitigation or minimizing economic cost. In this paper, a dynamic optimization model was established, which can be used to analyze the road transport energy technology switching under multi-objective constrains. Through one case study, a series of solutions could be derived to provide decision-makers with the flexibility to choose the appropriate solution with respect to the given situation.

关键词： technology switching transport energy system multi-objective CO₂ mitigation

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An improved delta-star switching scheme for reactive power saving in three-phase induction motors

P. RAJA,N. KUMARESAN,M. SUBBIAH

《能源前沿（英文）》 2014年第8卷第3期页码 364-370 doi: 10.1007/s11708-014-0324-8

摘要： It is proposed that a capacitor can be connected permanently across each phase winding of a three-phase induction motor along with the conventional delta-star switching, for further saving in VARh at reduced loads on the motor. The method of choosing a suitable value for the capacitor and the criteria to be adopted for calculating the power output at which the star to delta switching is to be made are also explained. The experimental results on a 3-phase, 4-pole, 415 V, 50 Hz, 3.3 kW induction motor verify the advantages in adding the capacitor to the phase winding of the motor. Compared to using only a single delta connected stator winding or a delta-star switching, the advantages of the proposed addition of a capacitor, are also demonstrated through a case study conducted on a 400 V, 250 kW motor. Any further improvement in grid side power factor can be achieved by employing a static synchronous compensator (STATCOM) of reduced VAR rating.

关键词： delta-star switching induction motor power factor steady-state analysis

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城乡社区治理标准体系构建研究

王艳芳,朱伟,白波

《中国工程科学》 2021年第23卷第3期页码 32-39 doi: 10.15302/J-SSCAE-2021.03.013

摘要：

随着我国社会治理重心下沉，城乡社区逐渐成为社会治理的着力点，与此同时，现有城乡社区治理标准面临难以满足城乡社区治理现代化新需求的严峻挑战，亟需构建城乡社区治理标准体系。本文旨在开展城乡社区治理标准体系的发展战略研究，分析了当前我国城乡社区治理发展的标准化需求，梳理了国内外与城乡社区治理相关的标准体系发展现状，凝练了我国城乡社区治理标准化发展存在的问题，研究提出了我国城乡社区治理标准体系的初步架构方案及重点发展方向，涵盖总体、社区基础设施、社区信息化平台、社区自治、社区管理、社区服务6 个方面。结合新时代城乡社区治理重点和短板，本文从加强标准化顶层设计、开展试点示范、注重多方参与、坚持城乡统筹、加强人才培养5 个方面提出了对策建议。

关键词：城乡社区社区治理标准体系社区服务社区信息化

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正实特征值切换拓扑的一般线性多智能体动态系统稳定性 Article

李升波, 王志涛, 郑洋, 杨殿阁, 游科友

《工程（英文）》 2020年第6卷第6期页码 688-694 doi: 10.1016/j.eng.2020.05.006

摘要：

时变的网络拓扑结构对多智能体系统的稳定性具有重要的影响。本文研究了在拓扑结构切换情况下，具有“领航者-跟随者”拓扑结构的一般线性多智能体动态系统的稳定性，并将其用于网联汽车的队列控制。为描述多智能体之间的信息交换，本文将切换拓扑建模为关联矩阵特征值均为正实数的有向图，利用黎卡提不等式设计了分布式控制率，并估算了闭环系统的收敛速度。研究提出了具有切换拓扑的多智能体系统稳定性充分判据，同时利用共同李雅普诺夫函数证明了该闭环系统的稳定性。将所得到的结论应用于网联汽车的队列控制，证明了所提出方法的有效性。

关键词：稳定性多智能体系统切换拓扑共同李雅普诺夫函数

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A novel soft-switching twin arc pulse MAG welding inverter

WANG Zhenmin, XUE Jiaxiang, WANG Fuguang, HUANG Shisheng

《机械工程前沿（英文）》 2007年第2卷第2期页码 224-227 doi: 10.1007/s11465-007-0039-1

摘要： The high-speed double wire pulse metal gas arc (MAG) welding process possesses advantages of automation and high efficiency and quality. Thus, it attracts much more attention nowadays. To meet the requirements of the double wire pulse MAG welding process, a novel double wire pulse MAG welding inverter integrated with technologies, such as soft-switching, double closed loop control, and synchronic control, is produced. A complete performance test was done for the pulsed MAG welding power supply by using a computer testing platform. The results of the experiment indicate that the novel welding inverter has an excellent performance both in the dynamic and the static characteristics. Also, the synchronic control between the master inverter and the slave inverter is reliable.

关键词： high-speed control computer experiment indicate platform

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工程管理信息化的继承与创新

孙凯,刘人怀

《中国工程科学》 2013年第15卷第11期页码 12-18

摘要：

在工程的全生命周期中，工程运营阶段的历时最长、成本投入最大，且是工程效益体现的主要环节。在工程运营阶段的成本投入中，能源、人力资源及设备更新占了很大的比重，对这些成本的有效控制，是信息化实现的重要目标之一；在工程运营阶段，工程管理机构与客户及合作伙伴共同构成信息化的主体，工程利益相关者的有效协作是信息化成功的关键所在，本文以机场信息化为例，对工程管理信息化的继承与创新进行了探讨。

关键词：工程管理信息化组织协作管理创新资源共享

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工程管理信息化规划与实施

孙凯,刘人怀

《中国工程科学》 2014年第16卷第10期页码 10-14

摘要：

在工程全生命周期中，工程管理信息化规划与实施过程涉及组织的战略管理和项目管理两个层面，匹配问题是工程管理信息化过程中的核心问题之一。在战略管理层面，首先要充分明晰工程的信息处理需求，进而根据需求确立信息系统规划的目标；在项目管理层面，工程信息处理能力的形成不是工程参与各方能力的简单叠加，而是其能力相互匹配的结果，匹配程度的高低决定了工程的整体信息处理能力的高低。更进一步，工程信息处理能力与工程信息处理需求的匹配程度决定了工程管理信息化水平的高低，同时也会对工程的整体绩效水平产生影响。

关键词：工程管理信息化匹配信息处理需求信息处理能力

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工程管理信息化架构研究

刘人怀,孙凯

《中国工程科学》 2011年第13卷第8期页码 4-9

摘要：

通过对实现工程管理信息化过程中各利益相关者的分析，提出了建立工程管理信息化的可参考途径，并对工程管理信息化架构的演变过程及相应模式进行了分析，提出了由服务层(service layer)、应用层(application layer)、资源层(resource layer)和基础设施层(infrastructure layer)构成的4层SARI架构。

关键词：工程管理信息化架构组织协作公共平台