奥迪A4电子稳定系统(ESP)结构及自诊断功能

电子稳定程序主要的安全性意义在于:始终使车辆保持在惯性力和车头方向一致的状态,这样可以主动地防止车辆侧滑而发生意外,同时也能在事故中减少侧面碰撞的发生几率。本文详细介绍奥迪A4电子稳定系统(ESP)的结构、各部件功能及自诊断系统。     

电控喷射发动机故障自诊断

1、自诊断系统的功能特点 （1）自诊断系统的功能 现代汽车的电控系统都配备有自诊断系统，ECU的自诊断系统主要用于检测电子控制系统各部件的工作情况。自诊断系统具有以下功能：     

共轨式电控柴油喷射系统原理、结构及故障自诊断

随着交通运输车辆、船舶的急剧增加,柴油机排放的尾气已经成为对地球环境的主要污染源.世界各国业已开始寻找和采取有效的技术措施主动地减少和控制污染物的排放.柴油机共轨式电控燃油喷射技术是一项较为成功的控制排放污染的新技术,现以Bosch公司共轨式电控柴油喷射系统为例进行分析介绍.     

FAULT IDENTIFICATION IN HETEROGENEOUS NETWORKS USING TIME SERIES ANALYSIS

Fault management is crucial to provide quality of service grantees for the future networks, and fault identification is an essential part of it. A novel fault identification algorithm is proposed in this paper, which focuses on the anomaly detection of network traffic. Since the fault identification has been achieved using statistical information in management information base, the algorithm is compatible with the existing simple network management protocol framework. The network traffic time series is verified to be non-stationary. By fitting the adaptive autoregressive model, the series is transformed into a multidimensional vector. The training samples and identifiers are acquired from the network simulation. A k-nearest neighbor classifier identifies the system faults after being trained. The experiment results are consistent with the given fault scenarios, Which prove the accuracy of the algorithm. The identification errors are discussed to illustrate that the novel fault identification algorithm is adaptive in the fault scenarios with network traffic change.