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1.
主要研究三菱电机的集成网络结构,并利用三菱FA产品构建一个由以太网、MELSECNET/H光纤环网和CC—Link现场总线网络集成的网络控制实验室。这不但为学生熟悉工业控制系统提供一个模拟平台,而且为工业控制系统的网络化打下坚实的基础。  相似文献   

2.
基于COM组件的CATIA产品信息集成技术研究与实现   总被引:13,自引:1,他引:12  
产品数据模型是虚拟产品开发中信息集成的核心。采取基于COM组件的方式进行CATIA产品信息集成,具有结构清晰和互操作性强的优点。该文针对轿车虚拟产品开发的应用背景,实现了基于COM的CATIA产品信息集成,为轿车虚拟产品开发系统中的其他分系统提供了快速有效的产品信息访问。  相似文献   

3.
开放式现场总线CC—Link应用简介   总被引:2,自引:0,他引:2  
本简要的介绍了现场总线网络CC—Link的特点和功能,并结合2个实际的生产应用,介绍了如何在控制系统中使用CC—Link进行系统集成。  相似文献   

4.
汽车发动机爆震检测是典型的一唯时变信号模式识别问题,详细描述了基于离散傅立叶变换(DFT)进行发动机各气缸爆震强度模式识别的算法,并采用递阶模式特征判别和判决阈值自调整策略,有关算法集成到我们自主开发的发动机控制系统中,并在国产奥托微型轿车上取得满意的实际应用效果.  相似文献   

5.
基于Profibus-DP现场总线控制系统的集成   总被引:4,自引:0,他引:4  
介绍了现场总线集成的必要性和现场总线控制系统(FCS)集成技术的发展。结合实例说明了基于Profibus-DP现场总线控制系统集成技术的设计和实现,并给出了基于Profibus-DP现场总线控制系统的几种集成方案。提出了现场总线集成中应注意的若干问题。  相似文献   

6.
高集成轮胎压力传感器SP12分析及其应用   总被引:3,自引:0,他引:3  
对高集成轮胎压力传感器SP12的特点、功能进行了详细地探讨;分析了压力、温度、加速度和电源电压参数的检测和补偿原理;介绍了SP12的唤醒和复位功能以及SPI协议的通信原理.最后给出了一个应用实例,通过装在某轿车轮胎内部的实测表明:测量精度达到实际应用要求.  相似文献   

7.
《软件》2010,(1):56-58
德国大众Kassel工厂最新投产的组装线.由ThyssenKrupp Krause公司为其提供装备。因为这条生产线的系统复杂性和高要求,他们选择7VIPA公司性能卓越的SPEED7 CPU系列PLC。目前,该生产线已全面投运,生产用于所有车型(轿车)的双离合顺序传输变速箱。控制系统是基于集成以太网通讯处理器的VIPA NET CPU。  相似文献   

8.
MATLAB软件在控制系统的仿真与分析中的应用   总被引:2,自引:0,他引:2  
文章主要讨论了MATLAB软件用于控制系统的动态仿真并对行驶轿车的动力学仿真和受控轿车的完整仿真模型进行了介绍,通过举例说明,MATLAB软件包可以成功地应用于控制系统的仿真与分析,在科学研究,生产等领域有广阔的应用前景。  相似文献   

9.
一种采用增强式学习的模糊控制系统研究   总被引:2,自引:0,他引:2  
提出一种新的自学习模糊控制系统,该系统有机地集成了BB(Bucket—Brigade)算法和遗传算法,组成一种新的增强式学习(Reinforcement Learning)算法,能够在缺少输入—输出样本集的情况下自动学习生成模糊控制规则,调节隶属度函数。  相似文献   

10.
核电站仪表与控制系统的发展概况   总被引:2,自引:1,他引:1  
介绍了世界上核电站仪表与控制系统由模拟控制到模拟、数字混合控制,再到集成数字式控制的发展变化,指出集成全数字化控制系统已成为新一代核电站仪表与控制系统升级换代的主要标志,重点介绍了代表这一最新技术的国外有关公司的产品。  相似文献   

11.
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

18.
This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)SM and Team Software Process (TSP){SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.  相似文献   

19.
基于复小波噪声方差显著修正的SAR图像去噪   总被引:4,自引:1,他引:3  
提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。  相似文献   

20.
蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。  相似文献   

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