控制原理

The requirements of chemical components,producing technology of negative aluminium foil for electrolyze capacitor are explained.

阐述了电解电容器负极用铝箔对化学成分、生产工艺技术的要求，生产过程中的质量控制原理及方法。

ABSTRACT: The curriculum"Automatic control principle" is of strong practice, and there exits many difficult problems such as practice,prelect for many years.so its difficult for teachers to impress students lively and profoundly only by lectures and the performance of teaching is not very good.

摘 要：自动控制原理专业是一门实践性很强的学科，历年来存在着讲课难、实践难等老大难问题，课堂上的讲解并不能给学生留下鲜明而深刻的印象，教学效果很不理想，所以必须寻找新的教学途径，提高教学效果。

The article introduces some needed resolving problems. It brings forward principium of control, How can drive the servo signal and X and Z to the coordination of movements; How to change the feed rate; design of system structure, confirmation for input and output point, I / O address allocation;and also the project for speedup/down control during the screwthread processing. Method of programming design and manual operation trapeziform figure in system of numerical control lathe Corresponding project to problems is provided synchronously.

介绍可编程控制器应用于车床数控系统需要解决的问题，如何产生驱动伺服机构的信号及X、Z向的动作的协调；如何改变进给速度等；提出PLC作为数控机床主控制器的控制原理；系统结构设计；输入/输出点数确定及输入/输出点的地址分配；螺纹加工中升、降速的解决方案；程序设计及具体操作梯形图设计的方法，并给出相应的解决方案。

A new blasting vibration method,which is different from the traditional method to measure the delay time of detonating cord detonator,is proposed through studying the testing process and principle.

通过观察导爆管雷管延期时间的测定过程和研究测定控制原理，提出了与传统测定方法不同的爆破振动测定方法。

Some basic theories,such as methods of position detection,PWM control and starting policy of senseless BLDCM are disserted in the first.

首先分析了无传感器无刷直流电机的位置检测方法、PWM调制方式和启动策略等控制原理。

This structure applies non-controlled rectifier, boost chopper and SPWM inverter chopper to convert the electric energy dynamited by electrical machine into alternating current which can be accessed to the constant frequency and voltage of electricity grid.

详细介绍了直驱型风力风电系统的组成结构及其变流系统的控制原理，给出了一种在考虑现有开关器件功率水平的情况下符合大功率直驱并网型风力发电机组要求的变流电路拓扑结构，并给出了相应的主要部分的具体应用电路。

Benninger has successfully been using a ratio drive in mercerizing machines for processing knitted fabrics since 1977. This technique was first realised for woven fabrics on the BEN -DIMENSA in 1987. Since then there are more than 150 successfully operating installations.

贝宁格自1977年成功地将速比控制原理应用于针织物丝光机上，并于1987年将此技术第一次实现于机织物丝光机，自此已有150多台这样的丝光机成功地投入实际生产。

The control principle is presented and the configurations of both hardware and software are given.

文中介绍了控制原理，给出了系统硬件和软件的构成。

With the optimal structural control method, a new approach to determine the optimal damping constant of viscous damper is presented.

对拉索-粘性阻尼器系统的动力特性进行了研究，得到了拉索刚度、阻尼器安装高度及阻尼系数等参数对拉索系统模态阻尼比的影响规律；根据最优控制原理，提出了一种确定阻尼器优化阻尼系数的方法，该方法确定的阻尼系数能保证前几阶模态阻尼比得到整体优化，改进了现有的设计方法。

The control principle of electronic expansion valve and its energy saving advantage were described especially.

最后重点阐述电子膨胀阀的控制原理及节能方面的优势。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。