D09-32捣固车卫星小车作业走行后退控制的改进

简要介绍了D09-32捣回车卫星小车作业走行后退控制的现状及缺陷;详细分析了改进其控制的方法:通过引入卫星小车位置信号FID和大车速度信号FlB增加一路电路单独控制卫星小车自动后退,实现当大车后退时卫星小车能完全与大车处于随动状态.     

HXD1型机车牵引装置上的螺栓连接

分析HXD1型机车牵引座的螺栓连接方式中的特殊点及其机理,并通过受力计算说明了衬套对螺栓使用可靠性的影响。     

南京地铁突发事件应急处置机制建设

介绍南京地铁1号线突发事件应急处置体系的建设,重点是组织机构的设置、应急救援队伍的建设、应急救援设备的配备、应急预案的规范管理等。结合在运营过程中的实际应用,对应急处置体系及时修改完善,为建立科学的城市轨道交通突发事件应急处置体系、提升应急处置能力提供参考。     

广州地铁车站照明系统节能研究

主要探讨广州地铁1、2号线车站照明系统的节能措施,对目前市场的节能产品进行测试和调研;从现实情况、成本核算和安全等方面进行对比。对地铁车站照明系统的节能模式、节能灯具选型进行分析,认为照明节能具有节能率高、能保持车站原有的装修风格等特点,是理想的节能方式。     

边界适应曲线网格在天文潮、风暴潮数值模拟中的应用

采用曲线坐标系下的准三维近岸流波流耦合数值模型,采用边界适应曲线计算网格和两层嵌套方法,设计一套简单实用的天文潮预报系统,并引入风场以及考虑天文潮和风暴潮之间非线性作用的开边界水位,对2003年渤海发生的一次温带风暴潮进行模拟,计算结果与实测潮位吻合较好。     

unning status of asynchronous motors by

otection,under-voltage protection and so on,can measure every kind of electricity,and can process the function of telecontrol,telemetering and telecommunication.The experimental result shows that the device has the characteristics of good real-time,high EMC,small volume and easy implementation.asynchronous motor relay;AT91FR40162;alternating current s     

利用1+X证书制度提高学生综合职业能力探究

随着教育体系的完善和改革,国内多数中职学校开始实施1+X证书制度,即一个学历证书加若干职业技能等级证书,旨在培养学生的实践创新能力,使学生成为德智体美劳全面发展的高素质劳动者和技术技能人才。目前1+X证书制度被广泛应用于各大中职学校中,并取得显著的效果。1+X证书制度是加强学生综合素养的新途径,可以夯实学生的知识基础、提升学生的实践水平和创新意识,充分挖掘学生的潜力、发挥特长,为中职学生未来就业提高保障。本文就1+X证书制度提高学生综合职业能力作出分析,提出几点建议,以供参考。     

Steady-state steering of a tilting three-wheeled vehicle

The design of a narrow-track enclosed vehicle for urban transport was the subject of the CLEVER project. Due to its narrow track and requirement for car-like controls, an actively controlled tilting system was integrated into the chassis to allow for high lateral accelerations without rolling over. The cornering behaviour of this unique vehicle concept is investigated and compared with the ideal Ackermann response. The steer kinematics of this 1F1T (one front wheel, one wheel tilting) configuration are assessed through the use of a steady-state steering model, with attention focused on how steer parameters such as tilt axis height and inclination can be tuned to provide the required response. A prototype vehicle was designed and built and the results of experimental testing are presented to illustrate the real balancing performance of the combined steering and tilting approach used for the CLEVER vehicle. The experimental results follow the trends demonstrated in the model.     

高职院校汽车领域“1+X”证书制度项目探究——以《汽车电子电气与空调舒适系统技术》中级模块为例

根据国务院印发的《国家职业教育改革实施方案》要求,文章首先分析1+X证书制度实施背景及现状实施情况,然后从完善职业技能等级标准体系,构建深度融合体系,教学过程与企业生产、学生就业对接,产教融合落地生根等三方面进行阐述,最后以本院汽车运用与维修专业针对《汽车电子电气与空调舒适系统技术》中级模块具体培训实例进行分析探究。     

MR IMAGING OF THE PANCREAS

Objective To evaluate the ability of showing the pancreatic diseases on various MRI sequences. Methods Eighty-four subjects included 50 normal individuals and 34 patients(22 patients investigated for pancreatic neoplasia and 12 pancreatitis) were presented. The MR protocol included conventional SE T1WI, FSE T2WI, Pre-and post-contrast T1-weighted fat-suppressed and GRE imaging. Results The best diagnostic information was provided by T1-weighted fatsuppressed imaging before and after gadolinium enhancement on 27 of 34 cases with abnormal pan creas, followed by immediately postcontrast GRE images. Precontrast GRE imaging better showed the features of a cute pancreatitis. FSE T2WI obviously exhibited islet cell tumor and metastases of liver from pancreatic adenocarcino ma. Conclusion The standard MR protocol included T1-weighted fat-suppressed image and dynamic GRE imaging.