90年代以来，人工智能研究又出现了新的高潮。我们有幸采访了中国科学院计算技术研究所智能信息处理开放实验室史忠植研究员，请他和他的实验室成员引领我们走近人工智能这个让普通人感到深奥却又具有无穷魅力的领域。目前人工智能研究出现了新的高潮，那么现在有哪些新的研究热点和实际应用呢？ai研究出现了新的高潮，这一方面是因为在人工智能理论方面有了新的进展，另一方面也是因为计算机硬件突飞猛进的发展。 ups的供电方式可分为集中供电方式和分散供电方式两种，集中供电方式是指由1台ups向整体线路中各个负载集中供电，分散供电方式是指多台ups电源对多路负载分散供电，ups为何要接地，一方面为保护人身安全防止触电，另方面良好的接地有利于消除耦合噪声干扰，以单独接地方式供ups及计算机设备使用,接地电阻值建议小于5ω,材料选用一级品且施工需严格要求,接地点须与避雷针接地点远离。skb72/12 双电梯联动控制系统完能够运用于两台电梯的联动控制，具有较好的兼容性，并且可以达到稳定可靠的性能。该系统很容易实现实现多台群控， 具有广阔的应用前景。可编程控制器plc是一种以计算机技术为基础专为工业环境而设计的数字运算与操作的控制装置。plc作为传统继电器的替代产品，可以用软件来改变控制过程，同时又具有体积小功能强速度快可靠性，以及很大的灵活性和可扩展性，现以广泛应用于机械制造冶金化工电子纺织印刷等工业控制的各个领域。在现在生产条件下，当利用变频器构成自动控制系统进行控制时，[标题]很多情况下是需要采用plc和变频器相配合使用，例如轴承清洗包装纸印刷 pcb板制作等。plc可通过输出点或由通讯提供各种控制信号和令的通断信号。一个plc系统主要由三部分组成，即中央处理单元输入输出模块和编程部分。
当在同一母线上有多条配电线路时，无论哪一条发生单相接地，都不能与主变压器的绕组线圈直接构成回路，线路中不会出现短路和过负荷等大电流现象。仅有线路与大地之间形成的电容电流发生变化，表现为每一条线路中会出现微弱的零序电流。此电流非常小，从几毫安到几百毫安或数安培不等，与线路的长度成正比；通常条件下，每公里长的架空线路约为15毫安左右。在电力行业内把这种供电系统称为：“小接地电流系统”或“小电流接地系统”。9711181b 光泽度与平滑度：印刷品的光泽度取决于纸张的光泽度与平滑度，印刷用纸的表面属于半光泽表面，尤其是涂料纸，在彩色印刷品上，当光线以45°入射角照射到纸张表面时，约有4%的光会被反射掉，这就是首层表面反射光。
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南车时代（株洲电力机车研究所）由所本部、株洲南车时代电气股份有限公司、株洲时代新材料科技股份有限公司组成，集团现有员工5000余人、资产总额超过29亿元，年销售收入近16亿元。南车时代主要从事机车电传动技术及工业、民用变流技术的应用研究和工程化研究，承担电力机车、内燃机车、地铁及轻轨车辆、客车、大型养路机械、电动汽车用电气控制装置以及工业变流装置、电力电子器件、传感器、新材料等产品的开发与生产。 可见，plc的定义实际是根据plc的硬件和软件技术进展而发展的。这些发展不仅改进了plc的设计，也改变了控制系统的设计理念。这些改变，包括硬件和软件的。以下列出了plc的硬件进展，采用新的、先进的微处理器和电子技术达到快速的扫描时间，小型的、低成本的plc，可以替代4到10个继电器，现在获得更大的发展动力； 根据绝缘结构尺寸的不同分为模型1和模型2，试验时模型的左边界和下边界接地，将上下静电板及靠近静电板的线饼连接在一起施加雷电全波，图6为原模型简化后的下半部分区域。试验爬电现象为从图6b中的电力线位置沿靠近线饼侧的第一层纸筒表面向下并分别从纸筒下端跨。9711181b 管理功能主要包括系统设置和人员权限管理两部分。系统设置主要用于对监控主机工作参数的设置。人员权限管理主要是针对不同的工作人员分配不同等级的管理权限，包括系统管理权限，控制权限及操作权限。
r2619zd25k 该协调控制单元的控制结构框图如图2所示。主要包括：协调控制模块、故障点分析模块、故障识别模块、故障诊断及自处理模块、一次风机系统保护模块、保护动作连接模块、挡板开度函数器、模拟量i/o模块、数字量输入模块、数字量输出模块等十余种模块组成。9711181b can总线优势，多个can节点可以同时发送数据（多主发送），最高速度可达1mbps，在传输速率50kbps时，传输距离可以达到1公里。在10kbps速率时，传输距离可以达到5公里，支持网段划分，多个网段之间数据传输完全隔离，相当于虚拟出若干独立的虚电路，差分电平传输及全自动硬件级crc校验机制，确保可靠数据传输，每条can总线最多可以连接110节点。
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9711181b 线路板上的导线是的接收和辐射天线，由于导线的存在，往往会使线路板产生过强的电磁辐射。同时，这些导线又能接收外部的电磁干扰，使电路对干扰很敏感。在导线上使用信号滤波器是一个解决高频电磁干扰辐射和接收很有效的方法，图１（ａ）是没有使用信号滤波器时脉冲信号的频谱，可以看出，脉冲信号的高频成份很丰富，这些高频成份可以借助导线辐射，使线路板的辐射超标。， 将万用表红黑表笔按图3一4接触发光二极管两引脚，测量发光二极管两极间电压。正确读出电压数值,用万用表测量固定电阻器两端电压。首先判断正负表笔应接触的位置，然后测量,在以上三步的测量中，哪一项电压值若小于2.5伏，可将万用表选择开关换为v2.5伏档再测量一次，比较两次测量结果（换量程后应注意刻度线的读数）。