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余度 2

冗余 2

任务分配 1

任务调度 1

仿真平台 1

信息技术 1

冗余技术 1

分布式多处理机 1

分布式数据库 1

功率电传 1

变压力 1

可靠性分析 1

失效链路定位；冗余消除算法；覆盖集；无线传感器网络；网络诊断 1

安全系数 1

建模 1

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Influence of kinematic redundancy on the singularity-free workspace of parallel kinematic machines

Jens KOTLARSKI, Bodo HEIMANN, Tobias ORTMAIER

《机械工程前沿（英文）》 2012年第7卷第2期页码 120-134 doi: 10.1007/s11465-012-0321-8

摘要：

In this paper the effect of kinematic redundancy in order to reduce the singularity loci of the direct kinematics and to increase the operational, i.e., singularity-free, workspace is demonstrated. The proposed approach consists of additional prismatic actuators allowing one or more base joints to move linearly. As a result, a selective reconfiguration can be performed in order to avoid singular configurations. Exemplarily, kinematically redundant schemes of four structures, the 3RRR, the 3RPR, the 6UPS, and the 6RUS, are considered. The relationship between the redundancy and the operational workspace is studied and several analysis examples demonstrate the effectiveness of the proposed concept. Furthermore, the additional benefit of an increasing number of redundant actuators is discussed.

关键词： parallel robots kinematic redundancy singularity avoidance operational workspace

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Reliability analysis of the control system of large-scale vertical mixing equipment

YANG Mingjin, LI Xiwen, LI Shaoping, YANG Shuzi

《机械工程前沿（英文）》 2008年第3卷第2期页码 133-138 doi: 10.1007/s11465-008-0037-y

摘要： The control system of vertical mixing equipment is a concentrate distributed monitoring system (CDMS). A reliability analysis model was built and its analysis was conducted based on reliability modeling theories such as the graph theory, Markov process, and redundancy theory. Analysis and operational results show that the control system can meet all technical requirements for high energy composite solid propellant manufacturing. The reliability performance of the control system can be considerably improved by adopting a control strategy combined with the hot spared redundancy of the primary system and the cold spared redundancy of the emergent one. The reliability performance of the control system can be also improved by adopting the redundancy strategy or improving the quality of each component and cable of the system.

关键词： composite redundancy monitoring vertical technical

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基于拉索安全评估的普通斜拉桥和矮塔斜拉桥结构冗余度对比研究 Article

Khawaja Ali, Hiroshi Katsuchi, Hitoshi Yamada

《工程（英文）》 2021年第7卷第1期页码 111-123 doi: 10.1016/j.eng.2020.07.021

摘要：

本研究基于斜拉桥和矮塔斜拉桥的拉索安全性评估，为比较斜拉桥和矮塔斜拉桥提供了新的观点。由于二者都使用拉索，人们通常认为这两种类型的桥梁具有相同的结构。但是，国际桥梁设计标准规定了二者各自的拉索安全系数。为了纠正这一误解，本研究通过考虑各种异常因素和破坏因素（如过载、钢索损耗和钢索腐蚀）的影响，对在疲劳和极限状态下的拉索的安全系数进行了比较。本研究的主要目的是解释两种类型桥梁之间的结构差异，并通过采用确定性和非确定性方法来评估其结构冗余。为了实现这一目标，根据日本现行的拉索设计指南，本文建立了两座桥的三维模型。在达到桥梁模型的平衡状态之后，以参数化方式对拉索的不同安全系数进行了静态分析。最后，采用一阶可靠性方法和蒙特卡洛方法确定了拉索的可靠性指标。分析结果表明，在相同的荷载条件下，斜拉桥和矮塔斜拉桥在不同安全系数下具有不同的结构冗余度。此外，随着拉索的安全系数的增加，其结构上的冗余大大增加。

关键词：斜拉桥矮塔斜拉桥冗余拉索安全系数可靠性分析

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测量与信息技术

张国雄

《中国工程科学》 2000年第2卷第3期页码 62-66

摘要：

测量是获取信息的重要手段。科学研究、生产、高科技发展都离不开测量。测量技术发展的重要特点是它与信息技术的融合，这是提高测量精度、在线和动态测量、复杂参数和复杂环境下测量、智能测量的需要。这一融合贯穿始终，它包括信号调制与解调、采样与重构、信号融合、数据压缩、滤波、信号变换、时间序列分析、谱分析、数据拟合与建模、模式识别、神经网络、仿真与虚拟、误差分离、误差补偿、冗余技术、决策与智能技术等，它们互相支持。文章通过三坐标测量机误差补偿、圆度和轴系误差测量，以及大型工程的柔性坐标测量系统，介绍其在提高测量精度、优化、自标定、丢失信息自恢复、系统重组等方面的作用及其关键技术。

关键词：测量信息技术误差补偿建模冗余技术误差分离

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未来飞机液压系统的特点

王占林,陈斌

《中国工程科学》 1999年第1卷第3期页码 5-10

摘要：

现代飞机舵面操纵系统与动力收放系统几乎都是液压驱动的。随着飞机特别是军用飞机的发展，对机载液压系统提出了更高的要求。文章对飞机特别是军用飞机液压系统的主要发展趋势进行了综述，并对国内外的飞机液压系统的研究工作进行了一定的介绍。指出：质量轻、体积小、高压化、大功率、变压力、智能化、集成化、余度技术等是未来飞机液压系统的主要发展趋势，尤其是高压变压力泵源系统对未来飞机的发展尤为重要。

关键词：机载液压系统高压化变压力余度功率电传

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A data envelopment analysis of agricultural technical efficiency of Northwest Arid Areas in China

Yubao WANG, Lijie SHI, Haojie ZHANG, Shikun SUN

《农业科学与工程前沿（英文）》 2017年第4卷第2期页码 195-207 doi: 10.15302/J-FASE-2017153

摘要： Severe resource shortage and waste of resource in agricultural production make it necessary to assess efficiency to increase productivity with high efficiency and ensure sustainable agricultural development. This paper adopted an input-oriented data envelopment analysis (DEA) method with the assumption of variable returns to scale to evaluate agricultural production efficiency of 100 major irrigation districts in Northwest China in 2010. Major findings of this paper were as follows: firstly, the average value of total technical efficiency, pure technical efficiency and scale efficiency of those irrigation districts in Northwest China were 0.770, 0.825 and 0.931, respectively; secondly, 30% of irrigation districts were technically efficient, while 42% and 32% of them showed pure technical and scale efficiency respectively. Among inefficient decision-making units, total technical efficiency score varied from 0.313 to 0.966, showing significant geographical differences, but geographical differences of pure technical efficiency was more consistent with that of total technical efficiency; thirdly, input redundancy was evident. Inputs of agricultural population, irrigation area, green water, blue water, consumption of fertilizer and agricultural machinery could be reduced by 34.88%, 40.19%, 43.85%, 47.10%, 41.53% and 42.21% respectively without reducing agricultural outputs. Furthermore, irrigation area, green water and blue water had relatively high slack movement though Northwest China which is short of water resources. Based on these results, this paper drew the following conclusions: First, there is huge potential for Northwest China to improve its agricultural production efficiency, and agro-technology not input scale had greater influence on improvement. Second, farmers needed proper guidance in order to reduce agricultural inputs and it is time to centralize agricultural management for overall agricultural inputs regulation and control.

关键词： agricultural production efficiency DEA model input redundancy irrigation districts Northwest Arid Areas in China

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Temporal variation of heavy metal pollution in urban stormwater runoff

Wen LI, Zhenyao SHEN, Tian TIAN, Ruimin LIU, Jiali QIU

《环境科学与工程前沿（英文）》 2012年第6卷第5期页码 692-700 doi: 10.1007/s11783-012-0444-5

摘要： Stormwater runoff from three types of urban surfaces, a parking lot, a street, and a building roof, was monitored during four rainfall events that occurred in the one-year period from June 2009 to June 2010. The event mean concentrations (EMC) of dissolved copper (Cu), lead (Pb), zinc (Zn), manganese (Mn), and iron (Fe) exceeded China’s National Water Quality Standards for Surface Water. The degree of heavy metal contamination was related to the type of underlying surfaces. Additionally, the concentration of dissolved heavy metals peaked shortly after the runoff began and then declined sharply as a result of adequate flushing. First flush effects of varying degrees were also observed during all of the monitored rainfall events based on the first flush ratio ( ). Redundancy analysis revealed that four environmental variables (rainfall depth, intensity, antecedent dry weather period and type of underlying surface) had significant effects on the strengths of the first flush effects, accounting for 72.9% of the variation in the . Dissolved metals presented varying first flush effects on different underlying surfaces that occurred in the following relative order: parking lot>roof>road for low intensity and high runoff volume rainfall events; parking lot>road>roof for high intensity and low runoff volume events. The relative strength of the first flush for dissolved heavy metals was Fe, Mn>Cu, Zn>Pb.

关键词： urban stormwater heavy metal pollution temporal variation event mean concentration first flush effect redundancy analysis

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Regional wind power forecasting model with NWP grid data optimized

Zhao WANG, Weisheng WANG, Bo WANG

《能源前沿（英文）》 2017年第11卷第2期页码 175-183 doi: 10.1007/s11708-017-0471-9

摘要： Unlike the traditional fossil energy, wind, as the clean renewable energy, can reduce the emission of the greenhouse gas. To take full advantage of the environmental benefits of wind energy, wind power forecasting has to be studied to overcome the troubles brought by the variable nature of wind. Power forecasting for regional wind farm groups is the problem that many power system operators care about. The high-dimensional feature sets with redundant information are frequently encountered when dealing with this problem. In this paper, two kinds of feature set construction methods are proposed which can achieve the proper feature set either by selecting the subsets or by transforming the original variables with specific combinations. The former method selects the subset according to the criterion of minimal-redundancy-maximal-relevance (mRMR), while the latter does so based on the method of principal component analysis (PCA). A locally weighted learning method is also proposed to utilize the processed feature set to produce the power forecast results. The proposed model is simple and easy to use with parameters optimized automatically. Finally, a case study of 28 wind farms in East China is provided to verify the effectiveness of the proposed method.

关键词： regional wind power forecasting feature set minimal-redundancy-maximal-relevance (mRMR) principal component analysis (PCA) locally weighted learning model

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机载机电系统总线管理研究

王占林,裘丽华

《中国工程科学》 2001年第3卷第6期页码 48-52

摘要：

各种运载体中都有很多机电系统，目前多按独立子系统方式进行管理。文章提出通过总线进行综合管理的方案，使各子系统除完成各自独立功能外还具有余度、容错功能；着重介绍了如何通过仿真平台进行综合管理的研究，给出了平台的硬软件结构及任务分配与调度的策略。

关键词：分布式多处理机仿真平台任务分配任务调度余度

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具有冗余结构的分布式数据库服务器及其负载平衡模型

田俊峰,刘玉玲,杜瑞忠

《中国工程科学》 2004年第6卷第6期页码 35-42

摘要：

服务器冗余技术在解决传统分布式环境的可用性和性能瓶颈问题的同时给系统的管理带来了新的挑战。介绍了一种分布式数据库服务器的构成原理及工作模型，重点讨论了它的冗余关系、基于移动代理的负载平衡模型及其性能分析等。

关键词：分布式数据库冗余负载平衡移动代理性能分析

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内生安全赋能网络弹性的构想、方法与策略

邬江兴 ,邹宏 ,薛向阳 ,张帆 ,尚玉婷

《中国工程科学》 2023年第25卷第6期页码 106-115 doi: 10.15302/J-SSCAE-2023.06.018

摘要：

网络弹性工程是美国、欧洲等发达国家和地区针对数字化转型、新发展形势下的网络安全挑战所采取的技术性措施，旨在以网络弹性标准为依托，构建数字技术准入“壁垒”，同时从应用服务侧和设备供应侧同时发力，提高自身数字设施和数字产品的安全能力。本文着眼网络弹性工程实施对我国发展新一代网络信息技术带来的影响和挑战，递次阐述了弹性、网络弹性、网络弹性工程的概念，从网络弹性工程的政策驱动、战略考量、发展困境等方面剖析了国外网络弹性工程的应用进展；基于内生安全理论提出了一种新的动态异构冗余架构，描述了内生安全赋能网络弹性的内在机理，阐释了内生安全赋能网络弹性的基本构想与应用方法。研究建议，加快技术创新，抵消发达国家网络弹性工程的组合效应；推动建立中国特色网络弹性政策法规体系；建立相应监管体系，明确网络安全责任边界；建立可量化、可验证、具有公信力的测试评价体系；采取市场化金融手段，多路径助力网络弹性实施，以期系统性增强我国网络弹性，推动网络强国建设。

关键词：网络空间；内生安全；网络弹性；结构加密；动态异构冗余架构

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Optimal redundant placement of PMUs in Indian power grid — northern, eastern and north-eastern regions

Pathirikkat GOPAKUMAR, G. Surya CHANDRA, M. Jaya Bharata REDDY, Dusmata Kumar MOHANTA

《能源前沿（英文）》 2013年第7卷第4期页码 413-428 doi: 10.1007/s11708-013-0274-6

摘要： Effective utilization of renewable energy sources and efficient management of electric energy are essential for any developing countries like India. This can be envisioned through the implementation of concepts of smart grid (SG). One of the key requisites for SG implementation is that the grid should be completely observable. Renovation of conventional Indian power grid to a SG necessitates incorporation of the phasor measurement units (PMUs) in the present power grid measurement and monitoring system. Since the cost of PMU is high and any bus containing a PMU makes the neighboring connected buses observable, optimal placement of PMUs is very important for complete observability of the grid. This paper proposes optimal redundant geographical locations in the northern, eastern and north-eastern regions of Indian power grid for PMU placement. The PMUs installed in these geographical locations will make the grid completely observable and maintain the observability under the conditions of failure of some PMUs or branch outages. Integer linear programming has been used for finding the optimal PMU locations. The results proposed in this paper can be a stepping stone for revamping the Indian power grid to a SG ensuring complete observability during different contingency conditions.

关键词： phasor measurement unit (PMU) smart grid (SG) Indian power grid northern region Indian power grid (NRIPG) eastern region Indian power grid (ERIPG) north-eastern region Indian power grid (NERIPG) redundancy integer linear programing (ILP)

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一种有效的无线传感器网络失效链路定位方法 Article

Wen-yan CUI, Xiang-ru MENG, Bin-feng YANG, Huan-huan YANG, Zhi-yuan ZHAO

《信息与电子工程前沿（英文）》 2017年第18卷第5期页码 689-707 doi: 10.1631/FITEE.1601247

摘要：由于无线传感器网络中经常发生故障，网络故障管理对其维持正常运行状态非常重要。当前的故障定位方法通常先推断最有可能故障集，然后给出故障假设集。然而假设集中往往含有大量实际并未发生的故障。推断集中的冗余信息会大大加重故障推断的计算量，从而降低评估精度且增加故障定位时间。为了解决这个问题，本文提出了基于条件信息熵的冗余消除算法，该算法可以在保留核心信息的基础上消除大部分冗余信息。此外，还提出一种可以精确反映故障关系的概率关联故障模型，并为非确定性故障传播构建模型。通过一系列数学推导，本文将故障定位问题转化为覆盖件问题进行求解，并提出启发式算法推导故障假设集。在仿真环境和真实平台上验证了提出的方法相比现有故障定位方法的有效性。

关键词：失效链路定位；冗余消除算法；覆盖集；无线传感器网络；网络诊断

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标题作者时间类型操作

Influence of kinematic redundancy on the singularity-free workspace of parallel kinematic machines

Jens KOTLARSKI, Bodo HEIMANN, Tobias ORTMAIER

期刊论文

Reliability analysis of the control system of large-scale vertical mixing equipment

YANG Mingjin, LI Xiwen, LI Shaoping, YANG Shuzi

期刊论文

基于拉索安全评估的普通斜拉桥和矮塔斜拉桥结构冗余度对比研究

Khawaja Ali, Hiroshi Katsuchi, Hitoshi Yamada

期刊论文