Fault classification method for the driving safety of electrified vehicles

A fault classification method is proposed which has been applied to an electric vehicle. Potential faults in the different subsystems that can affect the vehicle directional stability were collected in a failure mode and effect analysis. Similar driveline faults were grouped together if they resembled each other with respect to their influence on the vehicle dynamic behaviour. The faults were physically modelled in a simulation environment before they were induced in a detailed vehicle model under normal driving conditions. A special focus was placed on faults in the driveline of electric vehicles employing in-wheel motors of the permanent magnet type. Several failures caused by mechanical and other faults were analysed as well. The fault classification method consists of a controllability ranking developed according to the functional safety standard ISO 26262. The controllability of a fault was determined with three parameters covering the influence of the longitudinal, lateral and yaw motion of the vehicle. The simulation results were analysed and the faults were classified according to their controllability using the proposed method. It was shown that the controllability decreased specifically with increasing lateral acceleration and increasing speed. The results for the electric driveline faults show that this trend cannot be generalised for all the faults, as the controllability deteriorated for some faults during manoeuvres with low lateral acceleration and low speed. The proposed method is generic and can be applied to various other types of road vehicles and faults.     

基于UG的标准零件库管理系统界面开发的关键技术

在课题的开发过程中,作者编写了符合ISO13584中PLIB标准的机械类国家标准件的EXPRESS几何图形程序,通过转换器,可以将这些几何图形程序自动地转换为GRIP绘图程序.     

基于ISO/IEC 9126的Web资源质量评测系统

为了管理基于Web的信息系统的资源质量,以国际软件质量管理标准（ISO／IEC9126）为基础,建立了Web资源质量评测系统,该系统包括多维多层次的Web资源质量评测模型（WebQM）、Web资源质量评测算法以及评测结果的鲁棒性分析,详细讨论了Web资源质量建模和应用TOPSIS算法评测Web资源质量的过程,鲁棒性分析主要研究了质量评测过程中评测参数取值对评测结果的影响,以优化Web资源质量模型和完善关键指标。     

An empirical assessment of ISM Code effectiveness on performance: the role of ISO certification

ABSTRACT

Although the introduction of the International Safety Management (ISM) Code aimed at increasing the safety standards in the maritime industry, several studies conducted so far argue for its inability to successfully fulfill its goals. The purpose of the current study is to evaluate the ISM Code effectiveness by drawing analogy from similar applications of ISO 9001 effectiveness in service companies. It also aims to determine its impact on firm performance and differentiate between ISO and non-ISO-certified shipping companies. Findings indicate that ISM Code effectiveness consists of two dimensions, namely continuous improvement and customer satisfaction focus, and the significance of its contribution on improving company performance is revealed, especially in the case of ISO-certified shipping companies. Moreover, the continuous improvement dimension was found to affect performance at a greater extent.     

“一岗两责”源自ISO9000的管理创新

本文通过对永济电机厂“一岗两责”管理的介绍和分析 ,为企业管理创新介绍一种新的思路 ,并以此希望能促进企业管理创新的发展。     

质量体系建设研究

改革开放以来,伴随着我国国民经济的增长,汽车销量逐年增长,从而带来了汽车的产能释放,随着汽车行业的快速发展,汽车实验室检测能力明显提高,但与发达国家相比仍有较大差距.深入研究质量、质量管理、质量管理体系和ISO9000质量管理标准等相关理论,能够有效指导实际工作.通过对质量体系相关理论的比较,发现汽车实验室在质量方针、...     

对运输企业推行ISO 9000质量体系认证的探讨

在运输管理工作中引入ISO 9000标准将使运输管理更科学化、系统化、文件化、制度化,能全面提升管理水平。     

ISO14000与东风汽车公司的经营发展

ISO1 4 0 0 0是国际标准组织为保护全球环境 ,促进世界经济持续发展 ,针对全球企业、政府部门、非盈利性团体和其它用户而制定的一系列环境管理国际标准。实施 ISO1 4 0 0 0系列标准会促使东风汽车公司把握机遇 ,乘势发展 ,消除国际贸易壁垒 ,从而获取竞争优势。公司应尽快地实施 ISO1 4 0 0 0     

浅谈贯彻实施ISO9002标准的基本过程

主要介绍了IRO9002标准的质量体系要求,以及在贯彻实施ISO9002标准的基本过程,取得的成果和体会。     

移植TAFE质量管理体系强化高职院校质量管理

通过对TAFE中ISO质量理念和方法的研究,全面深刻了解TAFE质量管理体系。结合我国职业教育质量管理特点,移植TAFE的成功经验,建立完善我国当前的高职质量管理体系,推动高职教育质量建设。