电容式压力传感器温度补偿的RBF神经网络

提出了一种基于径向基函数 (RBF)神经网络的电容式压力传感器温度补偿方法。通过实例说明了这一方法的应用 ,结果表明采用这种方法能在不同的压力下及温度变化较大时 ,对电容式压力传感器进行有效的温度补偿 ,并且能得到很高的补偿精度。     

基于LS-SVM的传感器智能校正及温度补偿

提出一种基于最小二乘支持向量机(LS-SVM)的传感器非线性校正及温度补偿的新方法,并给出了相应的过程和算法。在该方法中,LS-SVM被用作构建逆模型,并通过该模型映射传感器非线性特性,同时实现了传感器的温度补偿和非线性校正。通过实际电容式压力传感器校正的实验结果表明:所提模型建模速度比SVM模型高1~2个数量级,补偿误差仅为SVM模型的20%左右。因此,该学习速度快、补偿精度高、抗噪声干扰能力强,适合传感器温度补偿及校正。     

基于支持向量机的电容式传感器温度补偿研究

针对电容式传感器极易受到温度影响这一特性,基于支持向量机（SVM）建立电容式传感器系统补偿逆模型,对电容式传感器进行的温度补偿。实例分析表明：与RBF神经网络温度补偿法相比较,SVM逆模型在很大程度上提高了传感器的线性度,并且,补偿曲线更顺滑,预测性更强,提高了系统计量的准确度。     

基于CMAC的非线性逆滤波改善传感器的动态特性

在测量系统中许多传感器存在着严重的非线性静态特性和响应滞后的动态特性,当被测量对象的变化率高于传感器的响应速度时,测量结果与真值之间存在较大的误差.为了补偿这个测量误差,采用了一个由无限响应的IIR滤波器和静态非线性环节构成的非线性滤波器去改善传感器的特性.IIR滤波器的系数通过实验数据得到,非线性静态环节采用单输入单输出小脑神经网络(SISO CMAC)实现.SISO CMAC具有学习简单、收敛速度快、函数逼近精度高等特点.最后,通过对热敏电阻动态测量误差的补偿,验证了该方法的有效性.     

传感器模糊神经网络非线性误差补偿的研究

在测量系统中。传感器的非线性特性是测量系统误差的主要来源。要提高测量系统的精度，就必须进行误差补偿。设计了一个用模糊小脑神经网络实现的补偿环节。该补偿环节是一个用神经网络拟合的传感器逆特性，通过传感器的逆特性将传感器非线性特性改造成与实际物理过程相一致的不失真的线性特性。从而减小非线性误差。通过应用实验，验证了该方法的有效性。     

人工神经网络在电容式压力传感器设计上的应用

论述了利用函数链人工神经网络（FLANN）对电容式压力传感器的非线性和温度影响进行校正和补偿的方法，并利用计算机对FLANN的性能进行了仿真研究，通过比较，在电容式压力传感器的非线性校正和温度补偿问题上，采用FLANN比用多层感知器（MLP）具有计算简单、硬件电路少、并有良好的鲁棒性的特点。     

一种利用函数链神经网络的传感器建模新方法

讨论基于函数链神经网络 (FLNN)的传感器建模新方法 ,其结构简单、使用灵活、建模容易 ,易于实时硬件实现。两个算例说明网络的训练和非线性逼近方法 ,显示出网络的自适应能力、学习能力 ,基于FLNN的传感器模型可同时实现温度补偿和非线性校正。实际上 ,利用这种模型可以跟踪补偿环境改变引起的传感器特性的各种变化 ,在测控系统中具有良好的应用前景。     

基于人工神经网络的数字式水平传感器

利用电容式传感器实现水平偏转角度的计算机检测,在考虑环境条件变化的情况下,利用人我神经网络实现偏转角与输出量值的非线性映射。     

基于BP网络的厚膜压力传感器非线性校正

简述了厚膜压力传感器结构原理和力学模型、传统非线性校正方法,以及用神经网络进行非线性校正的原理,探讨用BP神经网络实现厚膜压力传感器的非线性校正,并通过MATLAB神经网络工具箱进行仿真。研究结果表明:采用该方法对弹性体应变量与压力关系的非线性校正可以将标准误差减小2个数量级,简单而有效地实现传感器非线性校正。     

基于递归神经网络的加速度传感器动态特性补偿

提出了一种基于递归神经网络的加速度传感器动态性能补偿方法,利用神经网络良好的非线性映射能力,建立传感器的动态逆模型,用实际工作参数训练神经网络,实现对加速度传感器动态特性的补偿。实验结果表明:经过动态补偿后,加速度传感器的系统工作频带得以拓宽,检测信号达到稳态的时间从补偿前的7m s缩短到大约1m s,传感器的动态性能得到明显的改善。     

Only connect: teaching, technology and telesis

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.     

European Community policy and the market

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.     

一种自适应子融合集成多分类器方法

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。     

Avoiding semantic and temporal gaps in developing software intensive systems

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.     

Designing economic np control charts: A programmed simulation approach

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.     

The development of robot art

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     

Explanation and prediction: an architecture for default and abductive reasoning

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.     

Three Process Perspectives: Organizations, Teams, and People

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.     

基于复小波噪声方差显著修正的SAR图像去噪

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。     

基于QTE的蒙古文显示机制研究与实现

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。