汽车油耗检测系统数学模型的建立与应用研究

根据影响汽车油耗的主要因素建立汽车油耗计算的理论模型,通过试验获得大量的相关数据,并进行了整理、统计回归后,对理论油耗预测模型的参数进行了标定,利用标定后的理论模型计算不同路况条件等对车辆油耗的影响.该模型的建立可为汽车油耗检测系统的设计奠定理论基础,为油耗检测系统控制程序的编写以及控制系统的仿真提供依据.     

汽车油耗检测系统数学模型的建立与应用研究

根据影响汽车油耗的主要因素建立汽车油耗计算的理论模型，通过试验获得大量的相关数据，并进行了整理、统计回归后，对理论油耗预测模型的参数进行了标定，利用标定后的理论模型计算不同路况条件等对车辆油耗的影响．该模型的建立可为汽车油耗检测系统的设计奠定理论基础，为油耗检测系统控制程序的编写以及控制系统的仿真提供依据．     

汽车安全检测设备标定系统研究

针对目前国内汽车安全检测设备由人工标定且数据非自动处理而导致工作量大和人为误差较大的问题,利用数据采集技术、UML建模技术和数据库原理,设计出汽车安全检测设备标定系统,实现对检测设备的自动化标定,提高了设备标定的精度和准确度。系统主要由信号采集模块、标定软件、通用标定器具和检测设备专用标定器具等部分组成,可以实现离线标定和在线标定。系统具有灵活配置、快速标定及通用性强的优点,可以满足不同规模检测站的需求,较好地解决了汽车检测设备标定工作中存在的不足。     

信息时代汽车展示的交互设计研究

目的实现汽车展示设计由传统的以汽车为主体的静态展示向以人的体验为主体的转变,体现信息时代汽车展示设计的特征和设计方式。方法通过分析信息时代汽车展示设计特点,归纳出交互设计在信息时代汽车展示设计的重要性和作用。结论动作交互、数据交互、声音交互、图像交互等交互设计方式可以运用到汽车展示设计中,并能够取得很好的展示效果,吸引观众的注意力,有效传递汽车信息。     

研究CAN总线的汽车检测技术

近几年来我国的经济与文化都取得了巨大的进步,在社会发展的带动下我国的交通运输业也得到了前所未有的发展,汽车逐渐的成为当今社会必不可少的一种交通工具。为了能够有效的提高汽车检测设备数据传输的可靠性以及实时性,人们提出了以CAN总线技术为基础的汽车检测技术,本文主要分析了CAN总线技术的特点以及汽车检测线的测控系统的设计,并进一步的研究与分析了CAN模块的设计以及CAN总线汽车检测技术的实际应用效果。     

基于CAN技术的汽车通讯系统设计

为了提高汽车通讯系统的可靠性,在分析CAN总线技术的基础上设计汽车CAN总线通讯系统。结合数字信号处理器（DSP）的CAN控制模块,以CAN总线发送接收器PCA82C250为核心设计通信系统硬件电路,并编写CAN通讯系统软件程序。通讯系统能够快速传输汽车的运行状况信息,具有结构简单、抗干扰能力强和通讯速率高等优点。     

基于视觉和工业机器人的动态抓取技术

目的 针对传送带输送产品过程中,机器人动态抓取产品的位姿数据计算问题,提出一整套基于智能相机和编码器检测的位姿数据计算方法。方法 首先搭建一套相机检测和机器人动态抓取系统模型,介绍抓取系统的构成及其工作过程;其次,为抓取系统创建各个坐标系,详细介绍各个坐标系间的变换关系、矩阵模型及需要标定的量;再次,设计标定量的测算过程和计算公式;最后,搭建以三菱工业机器人、欧姆龙智能相机及编码器等核心部件为主的实验样机,对上述位姿数据计算方法进行测试和验证。结果 实验结果表明,产品位姿数据的计算值与实测值之间的误差低于0.4 mm。结论 基于视觉和编码器检测的机器人动态抓取精度符合工程应用要求。     

汽车语音交互模型及设计策略

目的 在智能技术飞速发展、用户需求不断增长的背景下,以用户体验为中心,探索汽车工业“新四化”趋势下的汽车语音交互新形态,重构汽车语音交互模型,针对性地提出交互设计策略。方法 分析车载语音系统与用户之间的信息交流过程,构建汽车语音界面架构和交互模型。通过“新四化”趋势下汽车语音交互在信息主体、信息范围和信息内容等方面的变化综述,运用信息处理流程理论开展汽车语音交互模型和设计策略研究。结果 根据车载语音系统的信息处理流程,提出了以功能层、内容层、形式层、情感层为信息架构的汽车语音界面,构建了基于信息交流的汽车语音交互模型。基于语音界面的信息架构理论,提出了未来的汽车语音交互在功能拓展、内容丰富、形式优化和情感满足等方面的设计策略。结论 从信息交流角度开展的汽车语音交互设计研究,对车载语音系统交互设计和体验优化具有参考意义。     

基于机器视觉的渗透荧光缺陷自动检测系统

针对渗透荧光检测,设计一种高性价比、精度高、实用性强的表面缺陷自动化检测系统.系统从硬件传输结构、软件图像处理、数据分析,以及软硬件交互等方面进行研究,以工业铝型材为传输系统外框架,以LabVIEW软件为核心平台,采用机器视觉采集高精度图像并对获取的图像进行处理.本系统也可以实现对裂缝的标定以及表面缺陷类型、位置及数量的分析,且可以根据工业检测标准对工件进行分类,做到长时间连续作业,减少人工成本.     

面对未来的汽车情感化交互体验研究

目的汽车HMI高速发展的今天,以触摸屏为媒介的交互操作被广泛应用,在一定程度上引发了汽车HMI同质化现象,面对未来的消费者与品牌个性化的交互体验需求,需要探索新人机交互形式。方法从情感化、智能化的角度,以NOMI智能伙伴设计概念与具体操作体验为例,通过创造符合品牌家族化设计语言特征的交互体验和增加汽车与用户之间的情感联络这两方面,论述面对未来的情感化交互体验设计,探索新交互形式的可能性。结论汽车的人机交互将是语音、手势、表情、触摸与传统操作并存的,以自然交互为主的多通道交互模式,界面的形式将更少地占据驾驶者的注意力,情感化的交互体验是把智能化融入使用者与汽车更自然的伙伴关系之中。     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

The Research of Anti-Wear Properties of Organomolybdenum Compounds in the Engine Oils

A four-ball tester was used to evaluate the anti-wear performance of three kinds of organomolybdemun compounds in the engine oils, i. e., molybdenum dialkyldithiophosphate (MoDDP), molybdenum dialkyldithiocarbamate ( MoDTC), and sulphur and phosphorus freeorganomolybdeum (Molybdate). The results indicate that a low concentration of MoDDP doesn' t improve the anti-wear properties of the commercial engine oils, but a high concentration of MoDDP can obviously improve the anti-wear properties and the load-carrying capacity of the engine oils. MoDTC doesn' t improve the antiwear properties of the engine oils, but worsens the anti-wear properties of the oils. Signifi can timprove ment of frictional and wear characteristics is obtained with Molybdate added in the commercial engine oils and the formulated oils.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

A study of centrifugal cast high boron high speed steel

In the present study a high‐boron high speed steel (HSS) roll material was designed. Many expensive alloy elements have been substituted by cheap boron alloy, and high‐boron high speed steel roll has been manufactured by centrifugal casting method. The microstructures, mechanical properties and wear resistance of centrifugal casting high‐boron high speed steel roll have been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicated that the solidification microstructures of high‐boron high speed steel roll consisted of M₂(B,C), (W,Mo)₂(B,C), M₃(B,C), M₂₃(B,C)₆ type borocarbides and martensite, a small amount of retained austenite. Borocarbides were continuously distributed over the grain boundary. After quenching from 1050 °C, local broken network appeared in partial borocarbides, and fine secondary borocarbide precipitated from the matrix. After tempering from 525 °C, the amount of precipitated borocarbide increased significantly. After heat treatment, the hardness of high‐boron high speed steel roll excelled 60 HRC, and its impact toughness excelled 8.0 J/cm². The single groove steel rolling amount of high‐boron high speed steel rolls increases by 500% than that of bainite cast iron roll, when the rolls are used in K₁ mill housing of bar mill.     

Certification Becomes Important for the I Quality; and Safety Supervision of the Chinese Liquor Sector

The end of 2007, over 200 unit products of more than 80 Chinese firms have passed the quality grade certification for liquor products. These products involve distilled spirits, beer, wine, yellow wine, fruit syrup wine and others, and cover over 80% of the national top-branded liquor products.……     

Deposition and Coating Properties on CVD Tungsten

Surface characterization and microstructure studies are performed on chemical vapor deposited (CVD) tungsten coating. There is about 2 μm thickness diffusion layer of tungsten in the molybdenum substrate. The thermal shock test shows tungsten coating has good adhesion with molybdenum substrate, but the elements of oxygen and carbon in the tungsten coating have the bad affection to the adhesion. The result of high-temperature diffusion experiment is the diffusion rate from molybdenum substrate to tungsten coating is faster.