测量与控制

The calculated results were compared with the experimental results, and the agreements could be obtained. The effects of magnitude and distribution of the electromagnetic force on the flow around the aerofoil were investigated.

灿toke方程中考虑了可以控制电磁力大小和分布的电磁力源项，并把计算结果与实验测量结果进行了比较，发现两者符合较好。

A dynamic monitoring and identifying system of Fe2O3 series gas sensors for the research of electronic nose is introduced. The system has 6 channels to input 0~2.5V voltage signals, measures system temperature, makes thermoregulation for sensor with hardware and has LCD screen and voice function. The heating circuit using TL494 chip and PWM mode is realized. Offline and online identification is realized. The hardware design is based on 16 bits MSP430F149 microcontroller. The software design for digital acquisition and identification based on Windows operating system is compiled by Visual Basic 6.0. The test results show that friendly interface, simple operation, accurate data, reliability and stability are obtained. The real-time monitoring for all of the sensors in aerometry or identification can be realized by BP ANN.

介绍了一种用于电子鼻研究的Fe2O3系列气敏传感器阵列动态测试、控制和识别系统；该系统能够同时采集6路0~2.5V的模拟电压信号，测量系统温度、硬件对传感器进行温度补偿，同时具有液晶显示和语音功能；加热电路用TL494芯片采用PWM方式实现，能实现脱机和联机两种不同的识别模式；以16位单片机MSP430F149为核心设计了硬件系统，用Visual Basic 6.0设计了基于Windows操作系统下的数据采集与模式识别软件；该软件界面友好，操作简单，数据结果准确，运行可靠、稳定，既可以长时间实时显示各传感器的全部动态响应过程，又可以用BP神经网络进行模式识别。

The water-flow from the fountain is controlled by a mechanism linked to an anemometer (which measures wind speed and direction) located on top of an adjacent building.

喷泉射出的水流受到一个与风速计（用于测量风的速度和方向）相连的机械装置控制，前者安装在一幢邻近楼房的顶上。

The topic in view of the existing technique level, the main factors, which influence the measurement precision of the large scale test system, are analyzed in this paper, and the solutions improving the precision are put forward.1 using the multi-channel independent AC to transfer DC module, the power supply of the digit part and the simulation part is discerption, reducing the crosstalk between the digital signal and the simulated signal;2The feedback self-checking module is constructed by singlechip compositive 16 high accuracy A/D , established a closed-loop control system through this module and improved system's overall precision effectively.

本课题针对现有的技术水平，分析了影响大型检测系统测量精度的主要因素，提出了提高精度的具体方案和办法：1采用了多路独立交流转直流模块，数字部分与模拟部分分开供电，减小了数字信号与模拟信号之间的串扰。2利用单片机集成的16位高精度A/D构建了反馈自检模块，通过该模块建立了一个闭环控制系统，有效地改善了系统的整体精度。

According to More Effect,when the Hore component is placed in a gradient field,at the same time the direction of the current is perpendicular to the direction of the voltage,then between the two parallel side face come out the Hore voltage. When Hore component is set in this kind of uni-gradient magnetic field and the electric current is unchanged,the voltage output of Hore component will be proportional to the position of the Hore component in the magnetic field.

根据霍尔效应可知，置于磁场中的霍尔元件若电流方向与磁场方向垂直，则在霍尔元件垂直于磁场和电流方向的两个侧面将产生电势，将霍尔元件置于强度随空间位置线性变化的磁场中，且控制电流恒定，输出就正比于霍尔元件处于磁场中的位置，因此可以用霍尔元件来测量磁场与霍尔元件间的相对位移量。

With the development of society, in the fields of automatic test, control and manufacture and so on, in order to realize self-action and autonomy, such as part picking, placing, assembling and packaging operation in automatic manufacturing, or cruising, obstacle avoidance and navigation in mobile robotics, it is needed to measure the absolute distance between the target and the central point of measurement head.

随着社会的发展，在自动化测试、控制、制造等许多领域中，为了实现自动与自治，需要测量被测物与测头中心点之间的绝对距离，如自动制造业中工件的自动拾取、放置、装配、检测和包装，运动机器人的漫游、避障和导航等。

The Forth, the direct willingness survey method is used to identify and measure credit demand and credit constraint which is self-containedly categorized, in which repayment capacity, other credit sector and measurement errors are controlled.

第四，在信贷需求与信贷约束的识别上，采用直接意愿调查方法识别出了具有完备分类特征的信贷需求与信贷约束类型，并且，在调查过程中控制住还款能力、其他贷款渠道及测量误差等因素对调查的干扰。

And draw the conclusion: It is feasible for the prefigurative deviation and error adjust used in PC rigid frame bridge construction control to use the calculation model and program brought forward in this papers.

通过与实际施工数据及测量结果作分析比较，得到结论：运用本论文的计算模型和程序对预应力混凝土连续刚构桥施工控制过程进行结构分析与误差调整是可行的。

The relation among the bevel drive pinion bearing preloads, axial displacement and locknut screwing moment and the relation between the frictional moments were analyzed in this article.

该文分析了汽车主锥中圆锥滚子轴承的预紧力与轴向位移、压紧轴承的锁紧螺母拧紧力矩之间的关系，以及轴向位移量与启动摩擦力矩之间的内在联系，并研制出具有锁紧螺母预紧力矩和轴承启动摩擦力矩自动测量功能的主锥自动装配设备的控制系统。

It has unique architectural configuration,complex functions and big construction difficulties.A lot of technologies were applied to the construction to meet the design requirement and guarantee construction quality,such as tie plate or connector between profile-steel concrete column and steel beam,melted groove welding for steel bar ...

施工中采用包括型钢混凝土施工技术、型钢柱与混凝土梁采用连接板及连接器的应用技术、钢筋熔槽焊连接应用技术、自密实混凝土应用技术、录音棚房中房模板设计、弧形看台与斜柱施工技术、舞台桁架高空散拼施工技术、大型屋面钢网架安装技术、桁架整体提升技术、复杂形体幕墙安装技术、8坐标系统测量控制技术等，满足了设计要求，保证了施工质量。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。