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Chord error constraint based integrated control strategy for contour error compensation

Tie ZHANG, Caicheng WU, Yanbiao ZOU

《机械工程前沿(英文)》 2020年 第15卷 第4期   页码 645-658 doi: 10.1007/s11465-020-0601-7

摘要: As the traditional cross-coupling control method cannot meet the requirements for tracking accuracy and contour control accuracy in large curvature positions, an integrated control strategy of cross-coupling contour error compensation based on chord error constraint, which consists of a cross-coupling controller and an improved position error compensator, is proposed. To reduce the contour error, a PI-type cross-coupling controller is designed, with its stability being analyzed by using the contour error transfer function. Moreover, a feed rate regulator based on the chord error constraint is proposed, which performs speed planning with the maximum feed rate allowed by the large curvature position as the constraint condition, so as to meet the requirements of large curvature positions for the chord error. Besides, an improved position error compensation method is further presented by combining the feed rate regulator with the position error compensator, which improves the tracking accuracy via the advance compensation of tracking error. The biaxial experimental results of non-uniform rational B-splines curves indicate that the proposed integrated control strategy can significantly improve the tracking and contour control accuracy in biaxial contour following tasks.

关键词: cross-coupling controller     contour error     tracking error     position error compensator     feed rate regulator    

SUSTAINABLE NITROGEN MANAGEMENT FOR VEGETABLE PRODUCTION IN CHINA

《农业科学与工程前沿(英文)》 2022年 第9卷 第3期   页码 373-385 doi: 10.15302/J-FASE-2022455

摘要:

● Sustainable nitrogen management strategies for Chinese vegetable production are summarized.

关键词: enhanced-efficiency nitrogen fertilizer     integrated knowledge and products strategy     nitrogen rate     reactive nitrogen loss     vegetable     yield    

中国综合交通工程科技2035发展战略研究

张军,王云鹏,鲁光泉

《中国工程科学》 2017年 第19卷 第1期   页码 43-49 doi: 10.15302/J-SSCAE-2017.01.007

摘要:

在社会经济快速发展以及新一代信息技术深度应用与跨界融合的新形势下,综合交通工程科技发展依然面临着安全、高效和环保等方面的重大挑战。本文针对我国经济社会和交通运输发展的重大需求,从全面剖析国内外综合交通工程科技领域发展的状况出发,凝练面向我国综合交通工程科技2035发展战略,树立以网联化、协同化、智慧化为核心的发展思路,确定战略目标、重点任务、发展路径、重大工程及重大工程科技专项等。研究成果对科学谋划我国综合交通工程科技的跨越式发展具有重要的参考价值。

关键词: 综合交通     2035年     工程科技     战略规划    

黄河三角洲及附近海域综合治理战略研究

王万战,雷坤,江恩惠,李子成,韩雪娇,李岩

《中国工程科学》 2016年 第18卷 第2期   页码 91-97 doi: 10.15302/J-SSCAE-2016.02.011

摘要:

针对黄河三角洲及附近海域的生态环境现状和主要问题,从黄河三角洲是河—陆—海体系一部分的角度,提出了黄河三角洲及其附近海域综合治理战略:(a)通过多流路和科学调度,把黄河水沙营养物相对均匀地输送到黄河三角洲沿岸各处,(b)把河口河道整治成相对窄深的河道,以节约黄河口输沙水量;(c)利用黄河泥沙,淤高三角洲洲面,增加地下水埋深,改良盐碱地;(d)在渤海西岸及其上游地区实施陆海统筹的环境管理和污染治理。

关键词: 黄河三角洲     生态     综合治理     陆—海统筹环境管理     战略研究    

中国智能制造发展战略研究

“新一代人工智能引领下的智能制造研究”课题组

《中国工程科学》 2018年 第20卷 第4期   页码 1-8 doi: 10.15302/J-SSCAE-2018.04.001

摘要:

智能制造是建设制造强国的主攻方向。智能制造是一个不断演进发展的大概念,本文提出智能制造的内涵,归纳出三个基本范式:数字化制造、数字化网络化制造、数字化网络化智能化制造——新一代智能制造,明确了我国推进制造业智能转型应采取“并行推进、融合发展”的技术路线,提出了我国智能制造未来发展的战略目标、战略方针和发展路径,进而对我国体制机制保障和政策提出加强和落实智能制造推进机制、加大财税和金融支持、深化国际交流合作等初步的建议。

关键词: 新一代智能制造     基本范式     并行推进、融合发展    

基于MTO生产策略的供应链联盟集成决策模型研究

梁樑,王志强,王国华,田俊峰,汤卫君

《中国工程科学》 2005年 第7卷 第5期   页码 57-62

摘要:

根据供应链运作的特点提出了供应链绩效综合评价的四个标准,以此为基础建立了MTO生产策略下供应链联盟集成决策指派求解模型。在供应链联盟总体综合绩效最大化和各个层次上企业意愿支付的基础上解决了联盟内部多支供应链生产合作的排程问题。供应链联盟的核心决策者运用该模型可以根据供应链运作环境的改变来动态地制订联盟合作战略。研究表明,该战略符合联盟博弈的Nash均衡,可以在保证联盟稳定性的同时使得联盟的整体绩效得到改善。

关键词: MTO     供应链     绩效     集成决策     联盟博弈    

稻渔综合种养及其发展建议

马达文,钱静,刘家寿,桂建芳

《中国工程科学》 2016年 第18卷 第3期   页码 96-100 doi: 10.15302/J-SSCAE-2016.03.016

摘要:

稻田养鱼是一种传统的综合养鱼方式。近几年来,一批以特种经济品种为主导的稻渔综合种养新模式不断涌现,在经济、社会、生态等方面取得显著的成效。为了推广稻渔综合种养的经验,本文实地调研了湖北省两种典型的稻渔综合种养模式,其中“虾–稻共作”模式亩均纯收入超过3 000元,亩纯收入则是单纯种粮的3~4倍;“鳖–虾–鱼–稻共作”模式亩均纯收入近万元,是单一种植水稻亩均效益的12.8倍。本文还提出了加快产业发展的建议,包括进一步拓展种养殖空间、促进产业融合发展及加大政策扶持力度等。

关键词: 稻田     综合种养     虾–稻共作     鳖–虾–鱼–稻共作    

Low-cost green building practice in China: Library of Shandong Transportation College

Yingxin ZHU, Borong LIN, Bin YUAN,

《能源前沿(英文)》 2010年 第4卷 第1期   页码 100-105 doi: 10.1007/s11708-009-0072-3

摘要: This paper introduces the design idea and technique utilized in the Library of Shandong Transportation College, which ranked 1st in the 2nd National Green Buildings Innovation Award in China in March 2007 due to its low cost and climate-oriented green strategy during its design and construction phase, including land saving, energy efficiency, water conservation, and so on. Originally, the place was a landfill site with an odor pool. After reconstruction, it was changed into the construction site of the library with an area of 7000m and a scenery pond. With the integrated use of passive shading, daylighting, ventilation with atriums, high-insulation materials, underground duct ventilation, and the substitution of cooling tower with the pond water, the HVAC load design indexes are 59 W/m and 21.8 W/m for space cooling and heating, respectively, much lower than the newly issued Chinese energy efficient design code for public buildings. Moreover, a set of measures is utilized for water conversation, material saving, and improvement of indoor environmental quality. After three years of operation, the real effect has been validated by electricity meter and field measurement. The total initial cost for the building with the above mentioned integrated technologies was only RMB 2150 per square meter, which was worth spending in China due to the climatic adaptability and the relative low cost.

关键词: green building     low cost technique     energy efficiency     integrated strategy    

Development of an integrated policy making tool for assessing air quality and human health benefits of

Xuezhen QIU,Yun ZHU,Carey JANG,Che-Jen LIN,Shuxiao WANG,Joshua FU,Junping XIE,Jiandong WANG,Dian DING,Shicheng LONG

《环境科学与工程前沿(英文)》 2015年 第9卷 第6期   页码 1056-1065 doi: 10.1007/s11783-015-0796-8

摘要: Efficient air quality management is critical to protect public health from the adverse impacts of air pollution. To evaluate the effectiveness of air pollution control strategies, the US Environmental Protection Agency (US EPA) has developed the Software for Model Attainment Test-Community Edition (SMAT-CE) to assess the air quality attainment of emission reductions, and the Environmental Benefits Mapping and Analysis Program-Community Edition (BenMAP-CE) to evaluate the health and economic benefits of air quality improvement respectively. Since scientific decision-making requires timely and coherent information, developing the linkage between SMAT-CE and BenMAP-CE into an integrated assessment platform is desirable. To address this need, a new module linking SMAT-CE to BenMAP-CE has been developed and tested. The new module streamlines the assessment of air quality and human health benefits for a proposed air pollution control strategy. It also implements an optimized data gridding algorithm which significantly enhances the computational efficiency without compromising accuracy. The performance of the integrated software package is demonstrated through a case study that evaluates the air quality and associated economic benefits of a national-level control strategy of PM . The results of the case study show that the proposed emission reduction reduces the number of nonattainment sites from 379 to 25 based on the US National Ambient Air Quality Standards, leading to more than US$334 billion of economic benefits annually from improved public health. The integration of the science-based software tools in this study enhances the efficiency of developing effective and optimized emission control strategies for policy makers.

关键词: air quality assessment     human health benefit     economic benefit     air quality attainment assessment     air pollution control strategy     decision support system    

Energy saving design of the machining unit of hobbing machine tool with integrated optimization

《机械工程前沿(英文)》 2022年 第17卷 第3期 doi: 10.1007/s11465-022-0694-2

摘要: The machining unit of hobbing machine tool accounts for a large portion of the energy consumption during the operating phase. The optimization design is a practical means of energy saving and can reduce energy consumption essentially. However, this issue has rarely been discussed in depth in previous research. A comprehensive function of energy consumption of the machining unit is built to address this problem. Surrogate models are established by using effective fitting methods. An integrated optimization model for reducing tool displacement and energy consumption is developed on the basis of the energy consumption function and surrogate models, and the parameters of the motor and structure are considered simultaneously. Results show that the energy consumption and tool displacement of the machining unit are reduced, indicating that energy saving is achieved and the machining accuracy is guaranteed. The influence of optimization variables on the objectives is analyzed to inform the design.

关键词: energy saving design     energy consumption     machining unit     integrated optimization     machine tool    

Applying an Integrated Systems Perspective to the Management of Engineering Projects

Simon P. Philbin

《工程管理前沿(英文)》 2015年 第2卷 第1期   页码 19-30 doi: 10.15302/J-FEM-2015004

摘要: Engineering projects can be subject to significant complexity, which may result in a number of issues and challenges that need to be addressed throughout the project life-cycle. Traditionally projects have been viewed according to the so called “iron triangle,” i. e., achievement of project milestones according to schedule, cost and quality targets. While these targets are fundamentally important to the performance of engineering projects, it is possible to view projects on a systemic level in order to allow an adequate focus on all the underpinning factors that have the potential to influence the performance of projects. Consequently, a management framework has been developed that is based on an integrated systems perspective of engineering projects, where the performance of projects is a function of six contributing sub-systems that are: process, technology, resources, knowledge, culture and impact.

关键词: integrated systems perspective     engineering projects     management    

A novel decoupling approach to an integrated optical-fiber proximity sensor for robots

LIU Guixiong, LI Xiani

《机械工程前沿(英文)》 2007年 第2卷 第2期   页码 164-167 doi: 10.1007/s11465-007-0027-5

摘要: The structure and the working principle of a self-compensational integrated optical-fiber proximity sensor that detects distance and orientation are introduced in this paper. The corresponding decoupling approach to the sensor is presented on the basis of multiscale characteristics. The decoupling process can be divided into two parts: classifying the information on the basis of the multiscale degree and solving the coupling equation via the computational approximation methods with different precisions. Finally, the principle, the physical meaning, and the implementation process of the approach are discussed. They indicate that the proposed approach is real-time and accurate, and can be applied to other similar circumstances.

关键词: multiscale     different     self-compensational integrated     information     implementation    

Optimal operation of integrated energy system including power thermal and gas subsystems

《能源前沿(英文)》 2022年 第16卷 第1期   页码 105-120 doi: 10.1007/s11708-022-0814-z

摘要: As a form of hybrid multi-energy systems, the integrated energy system contains different forms of energy such as power, thermal, and gas which meet the load of various energy forms. Focusing mainly on model building and optimal operation of the integrated energy system, in this paper, the dist-flow method is applied to quickly calculate the power flow and the gas system model is built by the analogy of the power system model. In addition, the piecewise linearization method is applied to solve the quadratic Weymouth gas flow equation, and the alternating direction method of multipliers (ADMM) method is applied to narrow the optimal results of each subsystem at the coupling point. The entire system reaches its optimal operation through multiple iterations. The power-thermal-gas integrated energy system used in the case study includes an IEEE-33 bus power system, a Belgian 20 node natural gas system, and a six node thermal system. Simulation-based calculations and comparison of the results under different scenarios prove that the power-thermal-gas integrated energy system enhances the flexibility and stability of the system as well as reducing system operating costs to some extent.

关键词: integrated energy system     power-to-gas     dist-flow     piecewise linearization     alternating direction method of multipliers (ADMM)    

Integrated energy in Germany–A critical look at the development and state of integrated energies in Germany

Saman AMANPOUR, Daniel HUCK, Mark KUPRAT, Harald SCHWARZ

《能源前沿(英文)》 2018年 第12卷 第4期   页码 493-500 doi: 10.1007/s11708-018-0570-2

摘要: In the face of global warming and a scarcity of resources, future energy systems are urged to undergo a major and radical transformation. The recognition of the need to embrace renewable energy technologies and to move toward decarbonization has led to significant changes in the German energy generation, consumption and infrastructure. Ambitious German national plans to decrease carbon dioxide emissions on one side, and the unpredictable and volatile nature of renewable energy sources on the other side have elevated the importance of integrated energies in recent years. The deployment of integrated technologies as a solution to interlink various infrastructures creates opportunities for increasing the reliability of energy systems, minimizing environmental impacts and maximizing the share of renewable resources. This paper discusses the role of integrated energy systems in supporting of sustainable solutions for future energy transitions. Moreover, the reinforcement of this movement with the help of different technologies will be discussed and the development of integrated energy systems in Germany will be reviewed.

关键词: integrated energy     renewable energies     energy transition     power-to-gas     power-to-heat     power-to-mobility     energy storage    

Development of an integrated structural health monitoring system for bridge structures in operational

Xinqun ZHU, Hong HAO

《结构与土木工程前沿(英文)》 2012年 第6卷 第3期   页码 321-333 doi: 10.1007/s11709-012-0161-y

摘要: This paper presents an overview of development of an integrated structural health monitoring system. The integrated system includes vibration and guided-wave based structural health monitoring. It integrates the real-time heterogeneous sensor data acquiring system, data analysis and interpretation, physical-based numerical simulation of complex structural system under operational conditions and structural evaluation. The study is mainly focused on developing: integrated sensor technology, integrated structural damage identification with operational loads monitoring, and integrated structural evaluation with results from system identification. Numerical simulation and its implementation in laboratory show that the system is effective and reliable to detect local damage and global conditions of bridge structures.

关键词: integrated structural health monitoring     operational conditions     vibration and guided wave    

标题 作者 时间 类型 操作

Chord error constraint based integrated control strategy for contour error compensation

Tie ZHANG, Caicheng WU, Yanbiao ZOU

期刊论文

SUSTAINABLE NITROGEN MANAGEMENT FOR VEGETABLE PRODUCTION IN CHINA

期刊论文

中国综合交通工程科技2035发展战略研究

张军,王云鹏,鲁光泉

期刊论文

黄河三角洲及附近海域综合治理战略研究

王万战,雷坤,江恩惠,李子成,韩雪娇,李岩

期刊论文

中国智能制造发展战略研究

“新一代人工智能引领下的智能制造研究”课题组

期刊论文

基于MTO生产策略的供应链联盟集成决策模型研究

梁樑,王志强,王国华,田俊峰,汤卫君

期刊论文

稻渔综合种养及其发展建议

马达文,钱静,刘家寿,桂建芳

期刊论文

Low-cost green building practice in China: Library of Shandong Transportation College

Yingxin ZHU, Borong LIN, Bin YUAN,

期刊论文

Development of an integrated policy making tool for assessing air quality and human health benefits of

Xuezhen QIU,Yun ZHU,Carey JANG,Che-Jen LIN,Shuxiao WANG,Joshua FU,Junping XIE,Jiandong WANG,Dian DING,Shicheng LONG

期刊论文

Energy saving design of the machining unit of hobbing machine tool with integrated optimization

期刊论文

Applying an Integrated Systems Perspective to the Management of Engineering Projects

Simon P. Philbin

期刊论文

A novel decoupling approach to an integrated optical-fiber proximity sensor for robots

LIU Guixiong, LI Xiani

期刊论文

Optimal operation of integrated energy system including power thermal and gas subsystems

期刊论文

Integrated energy in Germany–A critical look at the development and state of integrated energies in Germany

Saman AMANPOUR, Daniel HUCK, Mark KUPRAT, Harald SCHWARZ

期刊论文

Development of an integrated structural health monitoring system for bridge structures in operational

Xinqun ZHU, Hong HAO

期刊论文