DF8B型机车运行中频繁无显示卸载原因分析及对策

分析了DF8B型机车运行中高手柄频繁发生无显示卸载的原因，提出了相应解决措施及处理办法。     

珠江口VTS区域联网设想

在阐述珠江口水域船舶交通流状况和VTS现状的基础上,提出珠江口区域联网设想。     

水上突发险情与VTS应急处置

国际政治安全形势的变化莫测、我国对和谐社会的追求、航运经济以及海事自身的发展水平迫切要求建立水上突发险情应急处理机制,以深化海事监管体制改革,增强险情预防的针对性,提高水上突发险情的应急处置能力,尽可能地减少险情发生时所造成的人民生命和财产损失。     

珠江口VTS区域联网浅谈

VTS的建立对覆盖区水域的船舶交通安全发挥着重要的作用.珠江口水域情况复杂,船舶种类多,来往频繁,交通流量大,各地VTS又相对独立,船舶动态信息很难全面掌握,为充分利用各地VTS信息资源,实现VTS信息资源共享,本文在阐述珠江口水域船舶交通流状况和VTS现状的基础上,提出珠江口区域联网设想.     

我国客车制造工艺发展综述

改革开放以来，我国客车制造行业紧紧依靠科技进步，瞄准国际先进技术，使得客车产品的设计水平、开发能力、工艺装备水平有了显著提高，部分大型客车企业的制造工艺及其工艺装备已经接近或达到当前国际水平。在认真总结客车制造行业技改成功经验和存在问题的基础上，对今后我国客车工艺技术的发展提出了建议。     

纯电动客车CAN故障排除案例

正一、故障现象有1辆行驶约0.56万km的苏州金龙纯电动客车,型号为KLQ6109GAEVW3。车辆在行驶过程中突然加油门无反应,仪表不报任何故障,重新起动后故障现象消失。二、故障诊断接车后试车,行驶10min,没有故障。询问驾驶员后得知,故障为偶发。继续试车大约0.5h,车辆加速突然没反应,仪表没报故障。靠边停车后连接诊断仪进入仪表CAN模块菜单,发现模块温度都为0℃。     

Dynamic Analysis of Micro-machined Diamagnetic Stable Permanent Magnet Levitation System

A novel micro-machined diamagnetic stable levitation system (MDSLS) which is composed of a free permanent magnetic rotor, a ring lifting permanent magnet and two diamagnetic stabilizers was presented. The static and dynamic stable characters of MDSLS were analyzed. The coupled non-linear differential equations were used to describe six-degree-of-freedom motion of the levitated rotor, and the equivalent surface current and combined diamagnetic image current method were utilized to model the interaction forces and torques between the lifting permanent magnet and rotor permanent magnet and also between the rotor permanent magnet and diamagnetic substrates. Because of difficulty to get analytical solution, the numerical calculation based on Runge-Kutta method was used to solve the dynamic model. The vibration frequencies were identified by fast Fourier transform (FFT) analysis. According to their resonance characteristics and parameters, the translational and angular dynamic stiffness were also calculated. The results show that the levitation of the rotor in MDSLS is stable, and the MDSLS is potential for the application in levitation inertial sensor.     

悬臂浇筑连续梁0#块临时固结及支撑体系施工技术

对于悬臂浇筑预应力混凝土连续梁而言,确保连续梁T构施工过程中的安全稳定是至关重要的,本文结合西宁市同仁路北延工程(56.5+95+66.5)m连续梁为例,介绍了0#块临时固结及支撑体系的设计及施工;详细计算了连续梁T构最大不平衡弯矩、竖向反力以及预埋钢筋的锚固长度;采用Midas软件建立相关的模型,对支撑体系进行受力分析验算,并对支撑体系施工步骤进行介绍,施工结果表明：该方案施工过程安全可靠,施工质量得到保障,且可重复利用,降低了施工成本,为类似工程施工提供参考。     

汽车故障诊断四法

隔除法 部分地隔除或隔断某些系统或部件的工作，观察故障现象的变化，以确定故障范围或部位。