电动汽车动力电池安全管理研究及验证

根据电动汽车高压电力驱动系统的结构,参考电动汽车安全法规要求,设计了电动汽车高压电力安全管理系统;分析研究5种典型的高压电力系统故障、危害和对应的处理措施,重点研究了动力电池高压电安全管理系统的功能与设计。基于CAN总线技术对电动汽车高压电力驱动系统状态和关键电气参数进行实时监测,结果证明所设计的电动汽车高压电安全管理系统具有良好的准确性和鲁棒性。     

关于下坡道延续进路的来龙去脉

下坡道延续进路的目的是防止发生列车的侧面冲突，防止制动失灵闯入区间的问题，应另列课题研究。     

Multi-agent immune recognition of water mine model

It is necessary for mine countermeasure systems to recognise the model of a water mine before destroying because the destroying measures to be taken must be determined according to mine model. In this paper, an immune neural network （INN） along with water mine model recognition system based on multi-agent system is proposed. A modified clonal selection algorithm for constructing such an INN is presented based on clonal selection principle. The INN is a two-layer Boolean network whose number of outputs is adaptable according to the task and the affinity threshold. Adjusting the affinity threshold can easily control different recognition precision, and the affinity threshold also can control the capability of noise tolerance.     

牵引电机温升试验方法及改善措施

根据标准IEC60349及IEC61377的要求进行牵引电机温升试验,针对牵引电机温升值不符合要求问题,本文提出通过采用固定逆变器输入侧的直流电压,增加牵引电机的输入电压增加调制深度的措施改善牵引电机的温升.试验结果表明增加调制深度,能够降低牵引电机温升,使得牵引电机的温升符合要求.     

Wrinkle analysis of the space inflatable paraboloid antenna

The presence of wrinkles in the membrane is the main factor to induce the reflector surface inaccuracy of the space inflatable antenna. Based on the commercial finite element package ABAQUS, a numerical procedure for membrane wrinkle analysis was set up and used to analyze a space inflatable antenna which was under inner pressure to evaluate its wrinkle characteristics. First, the inner pressure effect on the reflector’s wrinkle pattern was studied thoroughly. As inner pressure increases, both the number and the amplitude of the wrinkles decrease, but the total deformation of the whole reflector surface increases much. Second, the influence of the interactions between antenna’s parts was investigated comprehensively. Any kind of unwanted interaction deteriorates reflector’s wrinkle characteristics. The works are valuable to the development and research of the space inflatable antenna.     

某车型车内气味溯源研究

在常规的气味主观评价之外,采用气相色谱-质谱法(GC-MS)对某款车型气味进行溯源分析,并将主观气味评价和全谱分析方法结合,通过将主观感知与客观数据对比分析,按照全谱测试中的物质特性进行分析,初步筛选气味的风险物质。依据零部件与整车气味匹配度,识别出有气味问题的零部件。分析结果表明影响该款车型整车气味关键零件是座椅和门板,而影响两种零部件的主要材料是包覆皮革。通过对同一厂家溶剂型皮和水性皮,以及不同厂家水性皮气味的对比分析,选择了合适的水性皮。配合其他零件的部分改善,最终将整车气味等级提高至标准要求。     

吉林省高速公路竣工文件档案体系和档号编制研究

我国高速公路竣工文件档案编制整理经历了从无到有，逐渐成长的一个过程。在介绍吉林省高速公路档案管理现状的基础上，对吉林省高速公路竣工文件体系和档号编制方法进行梳理，探讨吉林省高速公路竣工文件档案编制体系和档号编制的改良办法。     

论公路工程招投标中防止围标的对策

自工程招投标制度实施以来,招投标市场围标现象比较严重,这种不正当竞争是通过不正当手段,违背了招投标公平、公正、择优的目的,扰乱了公路市场的秩序.结合工作实践提出了防止围标的对策.     

港航工程招标合理设置资格预审条件的分析及探讨

港航工程有其自身的特点.招标时合理设置资格预审条件才能收到良好效果.阐述了资格预审工作的目的,资格预审条件设置的基本格式要求和港口与航道工程特点及其施工企业特点.重点阐述了港航工程资格预审条件设置技巧及注意点.可供参考.     

GSM-R语音组呼业务的信道分配方式研究

研究了GSM—R语音组呼业务原理，并从4个方面详细地对2种信道分配方式进行研究和比较，这对于GSM—R网络中信道分配方式的选择具有重要的意义。