控制元件

In order to improve output beam quality in ICF device, the optical element figure must be controlled strictly.

中文摘要在惯性约束聚变装置中，为了提高激光驱动系统的输出光束质量，需要对光学元件的面形进行严格控制。

The Periscope Drawtube will be bent because of the water resistance in sailing and this bend will cause the error of star measurement. Due to its especial structure, contactless measurement is the only way to measure its bend degree. First this paper introduces the method by linear array CCD based on structure and light path; Second it expatiates linear array CCD work principle and driving scheduling with example of TCD1501C and the driving circuit by CPLD. The output signal of linear array CCD includes common disturbance so the differential amplifier is needed. In order to make the signal adapt to computer processing, a threshold circuit with Schmitt characteristic and the data process following threshold are given. At last, some key problems in application are given.

潜艇潜望镜的镜筒在航行时受到水的阻力会产生弯曲变形，这种变形会造成潜艇对星体测量的误差；由于镜筒结构的特殊性，对其弯曲程度的测量只能采用非接触方法；首先从结构和光路方面介绍采用线阵CCD作为检测元件实现对镜筒弯曲程度的测量；其次以东芝公司的线阵CCD（TCD1501C）为例阐述了其工作原理及驱动时序的控制要点，并介绍了基于可编程逻辑器件的线阵CCD的驱动电路；线阵CCD输出的信号中含有共模干扰，必须采用差分放大器将其抑制；为将信号转化为适合计算机处理的数字信号，文中给出了有一定实用价值具有施密特特性的二值化处理电路及二值化后的数据处理过程；最后阐述了在实际使用中的一些关键问题。

Secondly, the driver circuit, the control circuit, magnetic component of the power supply are designed and optimized.

其次，对开关电源的驱动电路、缓冲电路、控制电路及主要磁元件进行优化、设计。

One or both of transmit and receive aperture controls may include preventing some element of the transducer array from transmitting or receiving, calculating weighting apodizations to combine with standard apodizations for each frame, or determining an aperture size based on an f-number for the transducer array for each frame.

发射和接收孔径控制中的一个或二者可以包括：阻止换能器阵列中的某个元件进行发射或接收，针对每一帧计算加权变迹以将其和标准变迹相组合，或者针对每一帧根据换能器阵列的F数来确定孔径尺寸。

Fusible element is a fixed fire extinguishing systems and fire safety, smoke detection and implementation of the system played the role of temperature control devices, motion devices in the automatic fire extinguishing system, kitchen equipment, fire-fighting equipment, smoke, fire-fighting equipment, fire dampers and smoke dampers implementing agencies, fire shutter temperature-controlled release devices, fire doors automatically closed device to be widely applied.

易熔合金元件是固定灭火系统和防火、排烟系统中起探测和执行作用的感温控制器件，在自动灭火系统动作装置、厨房设备灭火装置、烟雾灭火装置、防火阀和排烟防火阀的执行机构、防火卷帘温控释放装置，防火门自动闭门装置中得到广泛应用。

In this system,the VVVF(variable voltage variable frequency) control method based on magnetic flux trajectory is applied.In the system,it is the target for the magnetic flux linkage polygon to be greatly approximate to the ideal magnetic flux circle.Considering such limitations as the low speed torque ripple,high speed real time and the working frequency of switching element,through the subsection synchronization control method by applying different numbers of magnetic flux linkage polygon for different frequency range,the perfect precision specifications for speed can be obtained.

系统采用基于磁通轨迹法的他控式变频调速方案，以磁链多边形尽量逼近理想磁通圆为目标，并考虑低速转矩脉动、高速实时性和开关元件的工作频率限制等约束条件，通过采用分段同步控制方式，在不同的频段采用不同的磁链多边形边数，使系统获得了优异的转速精度指标。

Includes real full authority electronic governing, without the use of additional mag sensors or components.

含真正充分的权威电子控制，没有使用另外的磁传感器或元件

In the market, various forms of hair-dryer can see, but its internal structure is largely the same mainly by the motor and its drive blower fans, heating elements and electrical control switch pieces of three major components.

在市场上，各种样式的电吹风都能见到，但它的内在结构大致一样，主要由电动机和它的驱动风叶、发热元件及电器控制开关件三大部分组成。

Huntcapacitor compensation is simple and economic, but it can not follow the change of inductive loadin system, it can not achieve dynamic compensation of reactive power.

VC可以根据电网中无功功率的状况进行无功补偿，但是，在实际应用中SVC离不开具有时滞性的大容量储能元件，不能做到瞬时无功控制。

The inventer controller composed by separated analog devices before has developed into analog-digital or full digital controller based on microprocessor.

逆变控制器的发展经历从分立元件的模拟电路到以专用微处理芯片为核心的电路系统，并从数模混合电路过渡到纯数字控制的历程。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。