CAD／CAE／CAM在汽车开发中的应用

本文主要介绍泛亚汽车技术中心在汽车开发过程中应用ＣＡＤ／ＣＡＭ／ＣＡＥ技术的情况，同时简述了ＣＡＤ／ＣＡＭ／ＣＡＥ对汽车设计工业的影响，最后探讨了该技术在拖拉机产品开发中的应用。     

计算机在法国美国汽车工业中的应用

介绍了法国和美国汽车工业如何应用ＣＡＤ／ＣＡＤ／ＣＡＭ系统进行产品开发，具体为在汽车设计和工艺评估软件方面的发展，各大汽车公司使用软件状况，大型汽车公司产品开发和工艺模拟中ＣＡＥ的具体应用以及其应用计算机并行工程所取得的成效和研究动态。     

控制器局域网络在大众汽车中的应用

由于汽车中出现越来越多的控制器，所以提出控制器局域网络（ＣＡＮ）概念；为了使不同厂家生产的零部件能在同一辆汽车中进行有效、协调的工作，制定了ＣＡＮ标准；结合ＣＡＮ技术在上海大众汽车有限公司即将投产的帕萨特汽车中的应用，介绍了用于驱动系统的调整ＣＡＮ和用于车身系统的低速ＣＡＮ。     

汽车CAD／CAM技术应用研究

１前言ＣＡＤ／ＣＡＭ技术的应用水平是衡量一个国家汽车工业水平的重要指标之一。汽车工业作为国家支柱产业，一直是ＣＡＤ／ＣＡＭ技术应用的先锋和大户。ＣＡＤ／ＣＡＭ技术的不断发展和广泛应用，不仅仅在于它能提高产品的质量和缩短产品的周期，更主要的是：ＣＡＤ／...     

汽车行业CAE技术应用与研究

简要介绍了ＣＡＥ系统及其作用，对国外主要软件供应商及国外汽车制造公司的ＣＡＥ应用状况进行了评析，结合我国汽车行业ＣＡＥ的应用现状，提出了汽车行业推广应用ＣＡＥ技术的几点设想。     

工作站微机CAD网络技术在湖北汽车电器厂的应用

介绍了湖北汽车电器厂集中抓好ＣＡＤ技术应用开发方面的成果，工作站微机ＣＡＤ网络系统的应用对于推动我国汽车电器行业乃至汽车零部件行业的技术进步作了 了重要贡献，产生巨大的经济及社会效益。     

CAD／CAM技术在汽车产业上的应用

ＣＡＤ／ＣＡＭ技术在汽车产业上的成功应用大大缩短了产品开发周期，并显著提高了产品质量。本文对世界上几家大型汽车公司应用ＣＡＤ／ＣＡＭ的状况、有关ＣＡＤ／ＣＡＭ的集成化、ＣＡＤ／ＣＡＭ数据交换标准以及适用于汽车产业的ＣＡＤ／ＣＡＭ系统造型原则作了简要介绍。     

基于CAN的汽车内数据通信系统

本文介绍了一种应用于汽车内的数据通信系统，系统阐述了ＣＡＮ网络的通信原理及技术优势。最后，对ＣＡＮ在汽车内数据系统中的应用作了分析。     

Auto CAD在客车设计上的应用

文章介绍了汽车和计算机辅助设计技术的组成及ＡｕｔｏＣＡＤ软件，硬件环境，重点讨论大客车设计应用ＡｕｔｏＣＡＤ系统的技术关键及其人优势。     

两谈汽车车身CAD／CAE／CAM技术的应用与发展

本文回顾了跃进汽车集团公司车身ＣＡＤ／ＣＡＥ／ＣＡＭ技术应用方面的发展过程，力求找出差距，为未来制订一个进一步发展的规划。     

车身CAN总线网络数据传输效率优化算法的研究

针对CAN总线系统,定义了数据传输效率,分析了影响CAN网络数据传输效率的主要因素;通过计算比较,总结出3种可以有效提高CAN网络数据传输效率的方法,将它们结合起来,形成可有效利用CAN网络传输资源的CAN总线网络数据传输效率综合优化法.以典型车身CAN网络控制系统为例,运用该综合优化法进行了改进设计.结果表明利用该设计方法可以明显提高车身CAN网络的数据传输效率.     

车载MOST/CAN网络网关设计

介绍了车载MOST(Media Oriented Systems Transport)网络和CAN网络的结构与功能,阐述了MOST/CAN网络网关的硬件结构和软件实现,以及MOST网络和CAN网络之间通过网关进行数据交换的原理。该网关实现了MOST网络中以文件和命令形式传输的数据与CAN网络之间的交换,使MOST网络中车载系统与CAN网络中的系统之间能够进行参数的传递。     

某纯电动汽车CAN网络设计

简要介绍CAN底层协议及其当前应用现状,提出在纯电动汽车基础上CAN总线应用研究的必要性;详细说明某纯电动汽车的CAN网络设计,包括节点设计及网络设计;最后的CANoe测试及实车路试结果均表明:本车CAN网络设计能够达到预期的效果。     

汽车CAN总线网络结构测试研究及分析

汽车CAN总线网络结构越来越复杂,CAN总线中传输大量的数据用于汽车功能的实现。为了CAN总线网络的稳定性和可靠性,CAN总线网络的测试和分析对保证汽车CAN网络环境和品质有着重要的作用。     

Node-based scheduling method for easy migration from CAN to FlexRay in in-vehicle networking systems

As vehicles become more intelligent, in-vehicle networking (IVN) systems such as controller area network (CAN) are essential for the convenience and safety of drivers. To expand the applicability of IVN systems, attention is currently being focused on chassis networking systems that require increased network capacity and real-time capabilities. FlexRay was developed to replace CAN protocol in chassis networking systems, to remedy the shortage of transmission capacity and unsatisfactory real-time transmission delay of conventional CAN. However, FlexRay network systems require a complex scheduling method, which is a barrier to their implementation as chassis networking systems. In particular, if we want to migrate from a CAN network to a FlexRay network using the well-defined CAN message database, which has been specifically constructed for chassis networking systems by automotive vendors, a new type of scheduling method is necessary to reduce scheduling efforts during the software development process. This paper presents a node-based scheduling method for easy migration from a CAN network to a FlexRay network system. To demonstrate the feasibility of the technique, its performance is evaluated in terms of various software complexity indices.     

车载网络CAN和LIN互联技术的研究

介绍了车载网络CAN和UN的特点以及各自的不同应用场合,说明了两者实现互联的重要性,详细介绍了这两种不同网络间信息通信的软硬件实现方法。     

TTCAN系统及其在分布式车辆网络中的应用

在车辆总线技术研究的基础上分析了CAN通信应用,对CAN总线仲裁消息发送延迟、不相容行为消息错误进行了详细研究,并通过试验定量分析事件触发CAN在实时系统应用中的不足。为克服传统CAN通信不足引入时间触发通信协议,阐述了时间触发CAN（TTCAN）系统结构、定时机制、容错等关键技术,并对车辆其它类似总线进行了分析,最后对TTCAN在分布式车辆网络中的应用前景进行了展望。     

CAN总线在汽车上的研究与应用

采用Philips公司的P87C591作为微控制器兼作网关,构造CAN通信网络,对汽车控制系统进行控制。讲述了CAN总线在汽车控制系统中的应用情况,并列举了实验过程中碰到的主要问题,说明了CAN总线网络作为一种极具潜力的控制器局域网,在汽车控制系统中有着广阔的应用前景。     

Expanding transmission capacity of can systems using dual communication channels with kalman prediction

The controller area network (CAN) protocol is widely used for in-vehicle network (IVN) systems, and many automotive companies also use the CAN in chassis network systems. However, the increasing number of electronic control units (ECUs) dictated by the need for more intelligent and fuel-efficient functions requires an IVN system with a greater transmission capacity and less network delay. Automotive companies have tried several approaches such as segmenting CAN systems and developing time-triggered protocols. This paper presents a practical method for increasing the transmission capacity and reducing the network delay in CAN systems using dual communication channels with a traffic-balancing algorithm based on Kalman prediction to forecast the traffic on each channel and allocate frames to the one that is most appropriate. An experimental testbed using commercial microcontrollers with two or more CAN protocol controllers was used to demonstrate the feasibility of the Kalman traffic-balancing algorithm. Experimental results show that the traffic-balancing CAN system with Kalman prediction reduced the transmission delay of all priority messages compared to that of a simple method, such as a channel-switching CAN, without sacrificing the performance for high-priority messages.     

Traffic-balancing algorithm for can systems with dual communication channels to enhance the network capacity

The controller area network (CAN) is the dominant protocol for in-vehicle network (IVN) systems because it provides bounded transmission delay among electronic control units (ECUs) at data rates between 100 Kbps and 1 Mbps. Many automotive companies have chosen the CAN protocol for their chassis network system of intelligent vehicles. However, the increasing number of ECUs in intelligent vehicles and the need for more intelligent functions require a network system with more network capacity and real-time capability. As one approach to enhance the network capacity of a CAN system, this paper introduces a CAN system with dual communication channels. This paper also presents a traffic-balancing algorithm that predicts the traffic of each channel and allocates frames to the most appropriate channel. An experimental testbed using commercial off-the-shelf microcontrollers with two CAN controllers was used to demonstrate the feasibility of the traffic-balancing algorithm.