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2011 International Conference on Electrical and Control Engineering最新文献

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The application of the discrete sliding mode control based on state observer in aerial camera 基于状态观测器的离散滑模控制在航空相机中的应用
Pub Date : 2011-10-24 DOI: 10.1109/ICECENG.2011.6057156
Yalin Ding, Lei Zhan, Xuefei Zhang, Xinyang Li
A discrete sliding mode control scheme based on state observer is designed for DC torque motor. Aim on the problem of control chattering and steady-state chattering caused by discrete sliding mode control method, adaptive reaching law is proposed Non-chattering and stability are made an analysis. The aerial camera is chosen as an experimental platform and the discrete sliding mode controller with adaptive reaching law is applied to the drawtube system, the value of acceleration can be observed on line. The experiment results show the control scheme can effectively eliminate chattering and also make the drawtube system achieve better dynamical performance.
设计了一种基于状态观测器的直流转矩电机离散滑模控制方案。针对离散滑模控制方法引起的控制抖振和稳态抖振问题,提出了自适应逼近律,并对系统的非抖振和稳定性进行了分析。选择航空相机作为实验平台,将具有自适应趋近律的离散滑模控制器应用于拉拔管系统,实现了对拉拔管系统加速度值的在线观测。实验结果表明,该控制方案能有效地消除抖振,使抽油管系统获得较好的动态性能。
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引用次数: 0
Research of vehicle collision avoidance and self-adaptive control system based on fuzzy neural network 基于模糊神经网络的车辆避碰及自适应控制系统研究
Pub Date : 2011-10-24 DOI: 10.1109/ICECENG.2011.6057614
Cuimin Dong
The paper proposes a new vehicle crash-avoiding method using the fuzzy reasoning system and neural net work. The method used neural net work to calculate collision risk instead of fuzzy inference. A vehicle crash-avoiding adaptive network fuzzy interference system model is proposed. The hybrid learning algorithm is proposed to improve rapidity of convergence. For some linear parameters such as consequent parameters, recursive least square algorithm is used to update it. For other nonlinear parameters such as premise parameters, steepest descent method are used to identity it. By comparing the simulation result and experiment data, it shows that the membership function and fuzzy rules for fuzzy control model is optimized effectively by using adaptive network fuzzy inference system. It has a good and self-adaptive performance for vehicle auto-control under the dangerous condition.
本文提出了一种基于模糊推理系统和神经网络的汽车避碰新方法。该方法采用神经网络计算碰撞风险,代替模糊推理。提出了一种车辆避碰自适应网络模糊干扰系统模型。为了提高收敛速度,提出了混合学习算法。对于一些线性参数,如尾形参数,采用递推最小二乘算法进行更新。对于其他非线性参数,如前提参数,采用最陡下降法进行辨识。仿真结果与实验数据的对比表明,采用自适应网络模糊推理系统对模糊控制模型的隶属函数和模糊规则进行了有效的优化。它具有良好的自适应性能,适用于危险工况下的车辆自动控制。
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引用次数: 0
Digital natives: Present status and debate 数字原生代:现状与争论
Pub Date : 2011-10-24 DOI: 10.1109/ICECENG.2011.6056885
Cao Peijie, L. Xiaojie, Zhang Yonghe, Yang Minglei
The concept of digital natives implies the theoretical presupposition on the smarter learner of the digital age. They believe that, there are some distinctions between digital natives and digital immigrants. For instance: the stronger learning ability, more talent to master new technique, handling multiple tasks simultaneously and so on. For these new learners, the educational change is to be effected. on the contrary, Through questionnaire survey and interview, the scholars consider the cognitive difference between digital natives and digital immigrants come into being mainly from the age differences rather than the application of IT. By analyzing the existing research literature, the show that there are three reasons: first, the different research background between the two sides; second, for lack of quantification study and realistic data, the parties are unable to persuade each other; third, for lack of future research to the teaching scene, issues essence can not be clarified. Moreover, there are some errors in the understanding of digital natives. The age should not be the sole criterion for digital natives. Digital natives not only live in computer network environment, but also have good skills in computer and network so that they are related closely with information degree of its environment.
数字原生代的概念隐含了对数字时代更聪明的学习者的理论假设。他们认为,数字原住民和数字移民之间存在一些区别。例如:学习能力更强,掌握新技术的能力更强,同时处理多项任务等。对于这些新的学习者来说,教育的改变是要实现的。相反,通过问卷调查和访谈,学者们认为数字原生代和数字移民的认知差异主要来自年龄差异,而不是信息技术的应用。通过对已有研究文献的分析,发现原因有三:一是双方研究背景不同;第二,由于缺乏量化研究和现实数据,各方无法说服对方;第三,由于缺乏对教学场景的未来研究,问题本质无法厘清。此外,对数字原生代的认识也存在一些误区。年龄不应该是衡量数字原生代的唯一标准。数字原生代不仅生活在计算机网络环境中,而且具有良好的计算机和网络技能,与其环境的信息化程度密切相关。
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引用次数: 0
A web service-based virtual enterprise model 基于web服务的虚拟企业模型
Pub Date : 2011-10-24 DOI: 10.1109/ICECENG.2011.6057755
Hongwei Kang, Fei Dai, Zhihong Liang
This paper, aiming at enterprise integration between virtual enterprises, presents a concept of web service-based virtual enterprise (WSVE) and integrated framework and model for WSVE. This paper proposes a modeling structure for WSVE, including target view, organization view, function view, resource view and process view, and for process view which integrates all other views, presents a value timed Petri nets model and makes analysis on it. Using web service as integrated technology may shorten the time for identifying and building virtual enterprise, enables the enterprise to find appropriate partners among potential ones in large number, increase self-government of the partners and reduce coupling degree in integration of virtual enterprise.
针对虚拟企业之间的企业集成问题,提出了基于web服务的虚拟企业的概念,并提出了基于web服务的虚拟企业集成框架和模型。本文提出了WSVE的建模结构,包括目标视图、组织视图、功能视图、资源视图和过程视图,对于集成了所有视图的过程视图,提出了一个值时Petri网模型,并对其进行了分析。采用web服务作为集成技术,可以缩短企业识别和构建虚拟企业的时间,使企业能够在大量潜在的合作伙伴中找到合适的合作伙伴,增加合作伙伴的自主性,降低虚拟企业集成的耦合度。
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引用次数: 7
Research on food waste source classification recycling 食物垃圾来源分类回收研究
Pub Date : 2011-10-24 DOI: 10.1109/ICECENG.2011.6058140
R. Yin, Wenxiong Huang, Z. Qu, Ruifeng Guo, Dandan Huang, S. Yuan
Restaurant food waste has been changed from solid waste into resources. As the existing disposal of restaurant food waste are lack of uniform quality standards, food waste collected from the restaurants which mixing with impurity such as paper and plastic may cause food waste handling companies cannot run continuously and equipment failures, holding back the food kitchen waste resource utilization industry's sustainable development. This situation could be changed from following aspects, such as policy, management, economics, and the development of source classification of food waste treatment standards. Different productions for recycling food waste requires different quality of food waste, the corresponding processing cost is also different. Recycling food waste can be divided into three grades according to their quality, different grades of food waste recycling for different recycling prices. And the classification also helps improves the quality of food waste.
饭店餐厨垃圾已由固体废物转化为资源。由于现有的餐厨垃圾处理缺乏统一的质量标准,从餐厅收集的餐厨垃圾与纸、塑料等杂质混合,可能导致餐厨垃圾处理企业无法持续运行,设备出现故障,阻碍餐厨垃圾资源化利用行业的可持续发展。可以从政策、管理、经济、制定食物垃圾来源分类处理标准等方面改变这一现状。不同的生产方式对餐厨垃圾的回收利用要求不同的餐厨垃圾质量,相应的处理成本也不同。可回收的餐厨垃圾按其质量可分为三个档次,不同档次的餐厨垃圾可回收的回收价格不同。分类也有助于提高食物垃圾的质量。
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引用次数: 2
The application of virtual inductance in distributed flexible AC transmission system 虚拟电感在分布式柔性交流输电系统中的应用
Pub Date : 2011-10-24 DOI: 10.1109/ICECENG.2011.6057569
Li Ming, W. Yue, Wang Zhaoan
Three virtual inductance implementation methods are reviewed. Based on the features of the novel concept distributed FACTS, the Direct Reactance Synthesis method is chosen and analyzed in detail, especially for the negative inductance case. The impedance characteristics of virtual negative inductance is shown and discussed. The power flow controllability is verified by simulation.
综述了三种虚拟电感的实现方法。根据分布式事实的特点,对直接电抗综合方法进行了详细的选择和分析,特别是对负电感情况进行了详细的分析。给出并讨论了虚拟负电感的阻抗特性。通过仿真验证了系统的潮流可控性。
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引用次数: 1
The flow and self efficacy of sixth grade students under Scratch programming learning 六年级学生Scratch编程学习的心流与自我效能感
Pub Date : 2011-10-24 DOI: 10.1109/ICECENG.2011.6056787
A. Lai, Shi Guo
Due to the complexity of its syntax and unfriendly programming environment of the traditional computer language, teaching the students in the elementary school to learn computer programming is impossible. On the contrary, a visualized programming environment such as MIT Scratch will be suitable for the young students to learn. Nevertheless, there is little research to study the suitability of the visualized programming environment. As a result, this study adopts MIT Scratch as a learning tool and conducts an experiment to investigate the flow and self-efficacy of programming of sixth grade students (n=121). Furthermore, the peer coaching strategy is integrated into this study to survey its effectiveness.
传统计算机语言由于其语法的复杂性和编程环境的不友好性,使小学的学生学习计算机程序设计是不可能的。相反,像MIT Scratch这样的可视化编程环境更适合年轻学生学习。然而,很少有研究来研究可视化编程环境的适用性。因此,本研究采用MIT Scratch作为学习工具,对六年级学生的程序设计流程和自我效能感进行了实验研究(n=121)。此外,本研究亦将同伴辅导策略纳入本研究,以调查其有效性。
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引用次数: 1
The development research on Energy Database System in buildings 建筑能源数据库系统的开发研究
Pub Date : 2011-10-24 DOI: 10.1109/ICECENG.2011.6057445
Yi Jiang, Lihua Zhao, Kunming Li
With the proceeding of the statistics of building energy consumption, there has been vast amounts of data on it. So a Energy Database System in buildings to processing these data is very useful. The Energy Database System in buildings is developed in this dissertation, using Access as database, Delphi6.0 as develop tool. The base information of the statistics of building energy consumption can be inputs queried and mended. Meanwhile, the work of building energy consumption statistics can be done though this database system. The database system can be extended.
随着我国建筑能耗统计的不断深入,已经产生了大量的建筑能耗数据。因此,在建筑物中建立一个能源数据库系统来处理这些数据是非常有用的。本文以Access为数据库,Delphi6.0为开发工具,开发了建筑能源数据库系统。建筑能耗统计的基础信息可以输入、查询和修改。同时,通过该数据库系统可以完成建筑能耗统计工作。数据库系统可以扩展。
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引用次数: 0
Chosen-message SPA against RSA hardware implementation 针对RSA硬件实现的选择消息SPA
Pub Date : 2011-10-24 DOI: 10.1109/ICECENG.2011.6057850
Chen Ai-dong, Wang Fei-yan
This paper proposes an project based on chosen-message exponent extraction against RSA hardware implementation. The intercepting of the similar characteristic curve can help make the template of the exponential matching more accuracy and more efficient In the meantime it can improve the accuracy of attack.
本文提出了一种基于选择消息指数提取的RSA硬件实现方案。对相似特征曲线的截距可以使指数匹配模板更准确、更高效,同时也可以提高攻击的精度。
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引用次数: 0
Projection pursuit model for rank evaluating drought based on logistic curve 基于logistic曲线的干旱等级评价投影寻踪模型
Pub Date : 2011-10-24 DOI: 10.1109/ICECENG.2011.6058361
Baozhu Yu, Q. Fu, Jing Zhao
Existing drought evaluation method which people easy to appear the interference of artificial weights, this paper puts forward projection pursuit model for evaluating drought based on logistic curve and selects the drought evaluation index as projection parameters to seek its best projection direction. Taking Qiqihar area as research objects, the departure ratio of rain-fall, dry index and Z index were selected to establish drought assessment model based on above methods. The results showed that the model could avoid the interference of artificial weights. This method is feasible to evaluate the drought.
现有的干旱评价方法容易出现人为权重的干扰,本文提出了基于logistic曲线的干旱评价投影寻踪模型,选取干旱评价指标作为投影参数,寻求其最佳投影方向。以齐齐哈尔地区为研究对象,选取降雨量偏离比、干旱指数和Z指数,建立基于上述方法的干旱评价模型。结果表明,该模型可以避免人工权重的干扰。该方法对旱情评价是可行的。
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2011 International Conference on Electrical and Control Engineering
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