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期刊论文 1046

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关键词

新一代智能制造 10

仿真 7

质量控制 6

人工智能 5

控制 5

智能制造 4

智能控制 4

主动控制 3

新一代人工智能 3

模糊控制 3

神经网络 3

自适应控制 3

解耦控制 3

风险控制 3

三峡升船机 2

三峡工程 2

不确定性 2

中药 2

优化设计 2

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Regenerative braking control strategy in mild hybrid electric vehicles equipped with automatic manual

QIN Datong, YE Ming, LIU Zhenjun

《机械工程前沿(英文)》 2007年 第2卷 第3期   页码 364-369 doi: 10.1007/s11465-007-0064-0

摘要: The actual regenerative braking force of an integrated starter/generator (ISG), which is varied with desired braking deceleration and vehicle speed, is calculated based on an analysis of the required deceleration, maximum braking force of ISG, engine braking force and state of charge (SOC) of battery. Braking force distribution strategies are presented according to the actual regenerative braking force of ISG. To recover the vehicle s kinetic energy maximally, braking shift rules for a mild hybrid electric vehicle (HEV) equipped with automatic manual transmission (AMT) are brought forward and effects of transmission ratios are considered. A test-bed is built up and regenerative braking tests are carried out. The results show that power recovered by the braking shift rules is more than that recovered by the normal braking control rules.

关键词: SOC     Braking     battery     regenerative braking     starter/generator    

Impact of wind power generating system integration on frequency stabilization in multi-area power system with fuzzy logic controller in deregulated environment

Y. K. BHATESHVAR,H. D. MATHUR,H. SIGUERDIDJANE

《能源前沿(英文)》 2015年 第9卷 第1期   页码 7-21 doi: 10.1007/s11708-014-0338-2

摘要: Among the available options for renewable energy integration in existing power system, wind power is being considered as one of the suited options for future electrical power generation. The major constraint of wind power generating system (WPGS) is that it does not provide inertial support because of power electronic converters between the grid and the WPGS to facilitate frequency stabilization. The proposed control strategy suggests a substantial contribution to system inertia in terms of short-term active power support in a two area restructured power system. The control scheme uses fuzzy logic based design and takes frequency deviation as input to provide quick active power support, which balances the drop in frequency and tie-line power during transient conditions. This paper presents a comprehensive study of the wind power impact with increasing wind power penetration on frequency stabilization in restructured power system scenario. Variation of load conditions are also analyzed in simulation studies for the same power system model with the proposed control scheme. Simulation results advocates the justification of control scheme over other schemes.

关键词: two area power system     automatic generation control     wind power generating system (WPGS)     deregulated environment     fuzzy logic controller (FLC)    

核废物库吊车高精度自动定位的技术实现

栾秀春,韩伟实,王俊玲,杨爱光

《中国工程科学》 2010年 第12卷 第3期   页码 45-50

摘要:

阐述了田湾核电站核废物库21UKT吊车自动化改造工程中高精度自动定位的技术实现,包括控制系统的硬件配置和软件配置、控制逻辑、程序结构以及变频调速函数曲线,并给出了现场检测结果。

关键词: 核废物     吊车     自动控制     定位    

Proportional directional valve based automatic steering system for tractors Project supported

Jin-yi LIU,Jing-quan TAN,En-rong MAO,Zheng-he SONG,Zhong-xiang ZHU

《信息与电子工程前沿(英文)》 2016年 第17卷 第5期   页码 458-464 doi: 10.1631/FITEE.1500172

摘要: Most automatic steering systems for large tractors are designed with hydraulic systems that run on either constant flow or constant pressure. Such designs are limited in adaptability and applicability. Moreover, their control valves can unload in the neutral position and eventually lead to serious hydraulic leakage over long operation periods. In response to the problems noted above, a multifunctional automatic hydraulic steering circuit is presented. The system design is composed of a 5-way-3- position proportional directional valve, two pilot-controlled check valves, a pressure-compensated directional valve, a pressurecompensated flow regulator valve, a load shuttle valve, and a check valve, among other components. It is adaptable to most open-center systems with constant flow supply and closed-center systems with load feedback. The design maintains the lowest pressure under load feedback and stays at the neutral position during unloading, thus meeting the requirements for steering. The steering controller is based on proportional-integral-derivative (PID) running on a 51-microcontroller-unit master control chip. An experimental platform is developed to establish the basic characteristics of the system subject to stepwise inputs and sinusoidal tracking. Test results show that the system design demonstrates excellent control accuracy, fast response, and negligible leak during long operation periods.

关键词: Automatic steering system     Hydraulic circuit     Proportional directional valve     Proportional-integral-derivative (PID) control    

如何应对列车控制系统革新?

Hideo Nakamura

《工程(英文)》 2016年 第2卷 第3期   页码 380-386 doi: 10.1016/J.ENG.2016.03.015

摘要:

列车控制系统的作用是确保铁路的安全。本文首先总结了日本、欧洲通用的列车控制系统,在此基础上,笔者根据现有列车控制系统,提出以下问题:应该采用什么方法来提高列车控制系统的功能性、安全性和可靠性,并协助铁路的商业运营?其次,笔者提出了一个有助于基于当前信息和通信技术对新型列车控制系统进行开发的理想架构;同时,还提出了一种新的统一列车控制系统(UTCS),它能有效地提高列车控制系统的鲁棒性和竞争力。UTCS 的最终架构仅由基本设备组成,如铁轨中的转辙机和铁路道口控制设备。最后讨论了UTCS 在应用中的处理方式。

关键词: 列车控制系统     铁路信号     基于无线通信的列车自动控制系统     列车自动防护系统     闭塞系统    

DEVELOPMENT OF AN AUTOMATIC WEIGHING PLATFORM FOR MONITORING BODYWEIGHT OF BROILER CHICKENS IN COMMERCIAL

《农业科学与工程前沿(英文)》 2023年 第10卷 第3期   页码 363-373 doi: 10.15302/J-FASE-2023510

摘要:

● An automatic weighing system for monitoring bodyweight of broilers was developed.

关键词: automatic weighing     weight monitoring     floor housing     uniformity     precision poultry farming    

复杂环境下地铁施工安全风险自动识别与预警研究

丁烈云,周诚

《中国工程科学》 2012年 第14卷 第12期   页码 85-93

摘要:

在地铁施工安全管理工作中,面临的一个突出问题是施工安全风险信息采集与利用不充分,施工全过程安全风险控制仍是一个“黑箱”控制。将信息技术用于地铁工程施工安全风险控制,主要包括:a. 针对施工前安全风险识别,提出利用计算机技术从工程图纸中自动识别施工安全风险的新方法,从而提高地铁施工安全知识的积累、共享和重用;b. 针对施工中安全风险预警,提出地铁施工安全风险信息融合与时空耦合的预警方法,有效支持动态定位和跟踪危险施工工序及部位;c. 针对高风险特殊区段施工,开发集自动监测、实时预警于一体的地铁施工安全集成控制技术,将预警信息及时发送给现场施工人员,便于及时有效的采取施工控制和应急措施,保障施工安全。本研究成果在全国多个城市地铁建设中成功应用。

关键词: 地铁施工安全     风险自动识别     信息融合预警     风险时空耦合     风险实时感知    

Innovation, practical benefits and prospects for the future development of automatic milking systems

Hongzhe JIANG,Wei WANG,Chunyang LI,Wei WANG

《农业科学与工程前沿(英文)》 2017年 第4卷 第1期   页码 37-47 doi: 10.15302/J-FASE-2016117

摘要: Automatic milking systems (AMS) were designed to replace existing, labor-intensive machine milking and are an area of rapid development in modern dairy farming. The popularity of AMS lies in the convenience of management, decreasing workloads and the consistency of milking compared with non-automated machine milking. Nevertheless, this innovation has not been reviewed comprehensively and the practical benefits of AMS are still unclear. This review gives a brief overview of the historical development of milking machines and the workflow process of state-of-the-art AMS. In addition, a series of comparisons between AMS and current milking machines are made with respect to labor savings, quality parameters, udder health, herd behavior and mastitis detection and are summarized on the basis of relevant studies to show the benefits of the technological changes achieved by AMS. Finally, this review addresses several deficiencies in the technology and procedures of current AMS that need to be improved and also assesses recent advances in milking techniques with a particular focus on their potential for application in AMS.

关键词: automatic milking systems (AMS)     innovation     milking machine     practical effect     future prospects    

Phase change effect of low melting point metal for an automatic cooling of USB flash memory

Haoshan GE, Jing LIU

《能源前沿(英文)》 2012年 第6卷 第3期   页码 207-209 doi: 10.1007/s11708-012-0204-z

动态设定型板形板厚自动控制系统

张进之,段春华

《中国工程科学》 2000年 第2卷 第6期   页码 67-72

摘要:

文章介绍了应用解析板形方程推出板形最佳轧制规程和板形板厚协调控制新方法。该方法的主要特点:系统中采用了静、动态负荷分配,动态设定厚度自动控制系统(DAGC)完成了板形板厚的闭环控制,在算法中采用了贝尔曼动态规划。新方法将会改变目前轧机设计和控制思想:设计合理刚度,强调调度计划、配置轧辊凸度和优化轧制规程等方面的作用,实现信息控制。

关键词: 动态负荷分配     板形最佳规程     动态规划     动态设定    

Image automatic mosaics based on contour phase correlation

ZHANG Jing, HU Zhiping, OU Zongying, LIU Zhitai

《机械工程前沿(英文)》 2007年 第2卷 第2期   页码 228-234 doi: 10.1007/s11465-007-0040-8

摘要: The image planar mosaics is studied, and an image automatic mosaics algorithm on the basis of contour phase correlation is proposed in this paper. To begin with, by taking into account mere translations and rotations between images, a contour phase correlation algorithm is used to realize the preliminary alignments of images, and the initial projective transformation matrices are obtained. Then, an optimization algorithm is used to optimize the initial projective transformation matrices, and complete the precise image mosaics. The contour phase correlation is an improvement on the conventional phase correlation in two aspects: First, the contours of images are extracted, and the phase correlation is applied to the contours of images instead of the whole original images; Second, when there are multiple peak values approximate to the maximum peak value in the ? function array, their corresponding translations can be regarded as candidate translations and calculated separately, and the best translation can be determined by the optimization of conformability of two images in the overlapping area. The running results show that the proposed algorithm can consistently yield high-quality mosaics, even in the cases of poor or differential lighting conditions, existences of minor rotations, and other complicated displacements between images.

关键词: function     conventional     multiple     algorithm     correlation algorithm    

Analysis and control of wind-driven self-excited induction generators connected to the grid through power

S. Senthil KUMAR, N. KUMARESAN, N. Ammasai GOUNDEN, Namani RAKESH

《能源前沿(英文)》 2012年 第6卷 第4期   页码 403-412 doi: 10.1007/s11708-012-0208-8

摘要: The analysis of the wind-driven self-excited induction generators (SEIGs) connected to the grid through power converters has been developed in this paper. For this analysis, a method of representing the grid power as equivalent load resistance in the steady-state equivalent circuit of SEIG has been formulated. The technique of genetic algorithm (GA) has been adopted for making the analysis of the proposed system simple and straightforward. The control of SEIG is attempted by connecting an uncontrolled diode bridge rectifier (DBR) and a line commutated inverter (LCI) between the generator terminals and three-phase utility grid. A simple control technique for maximum power point tracking (MPPT) in wind energy conversion systems (WECS), in which the firing angle of the LCI alone needs to be controlled by sensing the rotor speed of the generator has been proposed. The effectiveness of the proposed method of MPPT and method of analysis of this wind-driven SEIG-converter system connected to the grid through power converters has been demonstrated by experiments and simulation. These experimental and simulated results confirm the usefulness and successful working of the proposed system and its analysis.

关键词: self-excited induction generator (SEIG)     renewable power generation     power converters     maximum power point tracking (MPPT)     steady state analysis     power generation systems    

Fully automatic container terminals of Shanghai Yangshan Port phase IV

Jack Xunjie LUO

《工程管理前沿(英文)》 2019年 第6卷 第3期   页码 457-462 doi: 10.1007/s42524-019-0053-0

摘要:

Engineering Owner: Construction Headquarters of Yangshan Deep-water Port Phase IV Project of Shanghai International Shipping Center

关键词: Yangshan Port     automated equipment     intelligent system     container terminals     port engineering    

机器学习和数据驱动算法在智慧发电系统中的应用——一种不确定性处理的视角 Review

孙立, Fengqi You

《工程(英文)》 2021年 第7卷 第9期   页码 1239-1247 doi: 10.1016/j.eng.2021.04.020

摘要:

由于人们对气候变化和环境保护的日益关注,智慧发电已成为常规火力发电厂和可再生能源系统经济安全运行的关键。面对日益增长的系统规模及其各种不确定性,传统的基于模型的第一定律方法已难以满足系统控制的要求。机器学习(ML)和数据驱动控制(DDC)技术的蓬勃发展为这些传统方法提供了一种替代方案。本文回顾了机器学习和数据驱动控制技术在发电系统监测、控制、优化和故障检测方面的典型应用,特别着重于揭示这些方法在评价、消除或耐受相关不确定性影响方面的作用。本文为智慧发电控制技术提供了一个从调节层到规划层的总体视角,分别从可见性、机动性、灵活性、经济性和安全性(简称“五性”)方面对机器学习和数据驱动控制技术的优势进行阐释。最后,对未来研究和应用进行了展望。

关键词: 智慧发电     机器学习     数据驱动控制     系统工程    

Machine vision-based automatic fruit quality detection and grading

《农业科学与工程前沿(英文)》 doi: 10.15302/J-FASE-2023532

摘要:

● A machine vision-based prototype system was developed for fruit grading.

关键词: Computer and machine vision     convolution neural network     deep learning     defective fruit detection     fruit grading     microcontroller    

标题 作者 时间 类型 操作

Regenerative braking control strategy in mild hybrid electric vehicles equipped with automatic manual

QIN Datong, YE Ming, LIU Zhenjun

期刊论文

Impact of wind power generating system integration on frequency stabilization in multi-area power system with fuzzy logic controller in deregulated environment

Y. K. BHATESHVAR,H. D. MATHUR,H. SIGUERDIDJANE

期刊论文

核废物库吊车高精度自动定位的技术实现

栾秀春,韩伟实,王俊玲,杨爱光

期刊论文

Proportional directional valve based automatic steering system for tractors Project supported

Jin-yi LIU,Jing-quan TAN,En-rong MAO,Zheng-he SONG,Zhong-xiang ZHU

期刊论文

如何应对列车控制系统革新?

Hideo Nakamura

期刊论文

DEVELOPMENT OF AN AUTOMATIC WEIGHING PLATFORM FOR MONITORING BODYWEIGHT OF BROILER CHICKENS IN COMMERCIAL

期刊论文

复杂环境下地铁施工安全风险自动识别与预警研究

丁烈云,周诚

期刊论文

Innovation, practical benefits and prospects for the future development of automatic milking systems

Hongzhe JIANG,Wei WANG,Chunyang LI,Wei WANG

期刊论文

Phase change effect of low melting point metal for an automatic cooling of USB flash memory

Haoshan GE, Jing LIU

期刊论文

动态设定型板形板厚自动控制系统

张进之,段春华

期刊论文

Image automatic mosaics based on contour phase correlation

ZHANG Jing, HU Zhiping, OU Zongying, LIU Zhitai

期刊论文

Analysis and control of wind-driven self-excited induction generators connected to the grid through power

S. Senthil KUMAR, N. KUMARESAN, N. Ammasai GOUNDEN, Namani RAKESH

期刊论文

Fully automatic container terminals of Shanghai Yangshan Port phase IV

Jack Xunjie LUO

期刊论文

机器学习和数据驱动算法在智慧发电系统中的应用——一种不确定性处理的视角

孙立, Fengqi You

期刊论文

Machine vision-based automatic fruit quality detection and grading

期刊论文