查询词典 device driver

But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.

本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究，所开展的主要工作和研究结果如下： 1、对过电压的产生机理及其影响因素进行了分析，指出单相重燃是导致开关设备损坏的主要原因，而两相重燃则是导致电容器组损坏的主要原因，因此单相重燃和两相重燃过电压是防护的重点； 2、对电容器组操作开关的特殊运行条件进行了分析，指出在这种运行条件真空开关难于实现不重燃，因此采用保护装置更具有现实意义； 3、对RC与MOA的保护效果和存在的不足进行了分析，指出这两种方法均只能有效抑制单相重燃过电压，而不能在发生两相重燃时保护电容器组； 4、重点对G-R阻尼装置的工作原理进行了分析和讨论，指出该装置接入后线路中将会出现两种频率的高频振荡，而电容器组上的过电压是由这两种振荡共同决定的； 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低，并提出了电容器组电压和最佳电阻值的近似求解方法； 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算，证实该装置确实可以有效抑制重燃时的电容器组过电压； 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法，经过修正后的过电压计算结果与仿真结果吻合较好； 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析，指出采用编织电阻和真空间隙可能是最佳选择。

A high-precision liquid filter includes a liquid treating device among which the interior has a filtrating device with filter screen along the periphery set up, the lower end of its one side is the liquid inlet, and the upper end is the treated liquid outlet and the lower end is the impurity outlet, a steel plate for hoisting the filtrating device is set up in connection below the cover shell at the upper end of liquid treating device in which or on its outside a magnetizing device is further set up and on its bottom two stands are fixed.

高精度液体过滤器，包括一液体处理装置，其中内部设置有周缘设置有滤网的过滤装置，其一侧下端为液体入口，上端为处理过的液体出口，下端为杂质出口，处理装置上端盖壳下连设一用以吊设过滤装置的钢板，液体处理装置内或外侧还设置有一磁化装置，液体处理装置底部设有两支架。

Taking a general view of the paper, major innovative ideas and returns are as follows: The main innovative ideas are as follows: 1. The paper put forward the new idea that combine water-saving drilling with rotary percussion drilling creatively according to the present situation of water resource lack seriously and the background of implementation of state geological survey strategy. 2. The working principle of new designed system of water-saving hydraulic percussion device completely different from traditional hydraulic percussion device, the system can carry out rotary percussion drilling on the condition that no surface water be consumed, and achieve the purposes that saving surface water, cutting cost and improving drilling efficiency. 3. The design conception of steel ball percussion device is very novel, the percussion device is durable, with a simple structure, at the same time drilling efficiency would be improved highly and drilling cost would be reduced greatly when drill with the steel ball percussion device.

综观全文，论文的主要创新点及研究成果如下：主要创新点： 1、结合我国许多地区水资源严重短缺的现状以及国家实施地质大调查战略的背景，创造性地提出了&节水钻探&和&回转冲击钻进&结合起来的新思维； 2、设计出的节水型液动冲击器系统，其工作原理跳出了传统液动冲击器要消耗大量地表水的原理模式，在基本不消耗地表水的情况下便能实现回转冲击钻进，达到节约地表水、降低成本、提高钻探效率的目的； 3、设计的球体冲击器构思新颖，克服了同类产品冲击功传递效率低的弊端、且结构简单、经久耐用，可大幅度提高钻探效率、降低钻探成本。

The brake device is preferably a caliper brake device such as a cantilever brake device, a side pull brake device, or a center pull brake device.

制动装置最好是一悬臂制动装置之类的卡钳式制动装置，侧拉式制动装置，或中心拉动式制动装置。

The loudspeaker device may further include a fourth acoustic driver comprising an axis, arranged along the line so that a projection onto the azimuth plane of the fourth driver axis and the projection of the second driver axis are coincident.

扬声器装置还可以包括具有轴线的第四声学驱动器，沿着所述直线设置所述第四声学驱动器，使得第四驱动器轴线在方位平面的投影和第二驱动器轴线的投影重合。

In this paper a kind of "safety belt compulsory device based on speed limit"is mentioned. It can berealized by means of the sensor and the control system installed between the accelerator pedal and the ECU: when the driver and passengers aren't wearing the safety belt, it limits the speed in a certain range no matter how the driver operates the accelerator pedal; when it is needed to speed up, it will remind the driver and passengers to fasten the safety belt in order to ensure the security of person. This safety belt humanizes the automotive passive safety system, which improves the driving comfort and safety.

设计了一种&基于限制车速的安全带强制使用装置&，该装置主要由传感器和控制系统组成，安装于加速踏板与发动机控制单元ECU之间，由此可实现：如果驾驶员和乘客不佩戴安全带，不管驾驶员如何操作加速踏板，将车速限定在一定的人身安全的车速范围内，当需要提速时，提醒驾驶员和乘客佩戴安全带，以确保人身安全，使汽车被动安全装置更为人性化，由此提高驾车舒适性和安全性。

The device, small in size, can be installed in the drivers' cab, which hasn't any side effect on driving. During the drive, the device captures the real-time parameter of driver' blinking frequency as well as the parameter of driving duration. Then the PERCLOS value is calculated to judge whether a driver is drowsing off or not.

该装置体积小，可安装在驾驶室内驾驶台上，完全不影响驾驶员正常的驾驶活动，行车过程中实时获取驾驶员的眨眼频率和眼睛持续闭合时间等与疲劳相关数据，计算 PERCLOS 值判断驾驶员是否打瞌睡。

This thesis brings forward the portable instrument system which is using μClinux, the embedded operation system, in portable instrument. Around portable instrument kernel board's designing and μClinux, the thesis has researched the hardware structure,μClinux porting, instrument system's running mechanism, device driver and net function, etc. The portable instrument system , from which hardware to software and device driver to application, has been researched in detail.

本课题提出了将μClinux这一嵌入式操作系统应用于手持式仪器构成一个手持式仪器系统，围绕手持式仪器核心部件的设计及μClinux操作系统，研究了仪器系统的硬件构成、在此基础上的操作系统移植、仪器系统的运行机制、设备驱动程序及网络功能的实现等，对手持式仪器系统从硬件到软件、从底层驱动到上层应用的诸方面做了较为深入的研究。

An unintelligent process that continues forever in the face of failures can generate thousands of retries per second; if your driver prints a "my device is broken" message every time, it could create vast amounts of output and possibly hog the CPU if the console device is slow－to interrupts can be used to driver the console, even if it is a serial port or a line printer.

一个设计糟糕的进程在遇到错误时会进入死循环状态，每秒中内会对函数进行上千次的重调；如果你的驱动程序每次都显示"设备损坏"的消息，那将会产生大量的输出信息，并且当控制台设备的是低速运行设备时有可能会独占 CPU ，即使它是一个串口或是一个行式打印机。

The main related design are on the following: Using RS232 to realize the target of communication links between host computer and target machines, and to test the PC serial; to make target machine startup disk; to design the Interface of target Machine ; to develop a device driver program module against remote data acquisition and control system ADAM5000 using the technical framework of xPC; and to realize Data Acquisition and controlling according to using ADAM5000 device driver program module against an actual water level in the block diagram of PID processing control system, the generation of real-time control procedures at the scene Debugging was expected to controlling effect.

本课题主要做了以下相关设计：利用RS232实现宿主机与目标机之间通信连接及对PC机串口的检测、制作目标机启动盘、设计目标机界面及在xPC技术框架下针对远端数据采集与控制系统ADAM5000开发了设备驱动程序模块，并以一个实际水箱液位为背景，在已有的PID液位过程控制系统算法框图中应用该设备驱动程序模块实现对现场设备的数据采集和控制，所生成的实时控制程序在现场调试中获得了预期的控制效果。

He has to relate with three women in the movie, and yet remain implicitly faithful to the unseen Lucinda.

让克劳德布里亚里成功地饰演试验了一个难度很大的角色：和三个女人打交道，但还要底下对观众未曾谋面的卢馨达保持忠诚。

The experiment was conducted to study effects of inulin on the growth performance, indices of immune organs and serum immunoglobulin of laying chicklings as well as the performance of inulin which replaced the antibiotics in diets by adding 0.2%, 0.4% and 0.8% of inulin, respectively.

试验旨在通过在蛋用雏鸡日粮中添加0.2%、0.4%和0.8%的菊粉，研究菊粉对蛋雏鸡生长性能、免疫器官指数和血清免疫球蛋白的影响，以及菊粉替代抗生素对蛋雏鸡的应用效果。