控制元件

High frequency and low noise of power device: Local and remote control can be realized and is simple in operation, which can be added the control of time, ampere-hour and temperature as well as PLC, field bus and computer interface.

功率元件工作频率高，不产生噪音。可实现本地和远程控制，操作简便，可增设定时、安时、温度等控制， PLC 或现场总线及计算机接口。

Thus, a new approach was proposed to solve these problems. A case study on alarm icon design for process control systems was used to demonstrate how the axiomatic design method with users' preferences on icon elements as inputs works for measuring the decision objectives, eliminating undesired alternatives, and suggesting the optimal alternative.

因此，本研究尝试以使用者对於图像元件之偏好程为基础，结合公设计方法，以程序控制系统中之警报图像设计为，对图像设计的决策问题提出新的决策方法，使其能明确与有效的衡决策目标，并能控制备选方案的，使决策者能根据此方法所预测的后果选取最好的方案。

A precision servo control system for Binary Optical Element laser direct-writing device is introduced. The structure of the spindle servo system and the performance requirements of the control system are analyzed.

介绍了二元光学元件激光直写设备的精密伺服控制系统，分析了主轴伺服系统的结构与控制系统的性能要求。

YXK-160 bit type control pressure gauge use the bourdon tube as the snsitive element, while controllingthe liquid medium pressure, itcan indicate the pressure value.

YXK-160 位式控制压力表采用弹簧管作为测压敏感元件，在对被测流体介质压力进行控制的同时，可同步指示出被测压力值。

This intelligent toy automobile is designed based on the SPCE061A as a micro-controller, gauging its position and posture through various sensors. Among them: making use of reflecting type infrared ray sensor, photo-electricity dynatron and Hall sensor to find the black line, the barriers, find the light and check the rotate speed.

摘 要：本智能玩具车是采用凌阳十六位单片机SPCE061A作为控制核心，对多通道多样化传感器综合控制：通过反射式红外线传感器检测路面黑线、光电三极管检测障碍物及光源、霍尔元件检测转速。

The step motor can receive digital signal directly and has the ability to response outer environment immediately and has no accumulation error, which often is used in driving system. In this driving system, open-loop control system is composed of stepping motor, which can satisfy the demand not only for control precision but also for the target of economic and practicality. On this basis , the analysis of stepping motor in power calculating and style selecting is also given.

由于步进电机能够直接接收数字量，响应速度快而且工作可靠并无累积误差，常用作数字控制系统驱动机构的动力元件，因此，在驱动装置中采用由步进电机构成的开环控制方式，这种方式既能满足控制精度的要求，又能达到经济性、实用化目的，在此基础上，对步进电机的功率计一算及选型问题经行了分析。

The microcontroller design as a central processing unit to control temperature measurement and temperature display and control of the implementation of components of the operation, Real-time display and alarm voltage detection function, and the completion of intelligent temperature control system of coordination and reliability.

本设计以单片机作为中央处理单元，控制温度测量，温度显示以及控制执行元件的运行，实现实时显示和电压报警检测等功能，并完成温度的智能化控制系统工作的协调性和可靠性。

The special equipment of a piston ring-process action requirements of piston ring beveller is explained.

阐述了一种活塞环专用设备—活塞环倒角机的工艺要求，介绍了该设备的继电器控制系统的设计方案，给出了电气控制系统的主电路、控制电路图以及主要电气元件的选择方法。

The hardware of intelligent temperature controller based on ARM single-chip microcomputer was designed with the K-type thermocouple and MAX6675 as a temperature detection circuit, and a solid-state relay as a temperature control element. The main circuit was controlled using the switching characteristics of the solid-state relay t.

以ARM单片机为核心，设计并分析了电阻炉智能温度控制系统硬件电路，由K型热电偶和数字转换芯片MAX6675组成温度检测电路，采用固态继电器来作为温控元件，利用开关特性来控制电路的断开和接通炉温控制主电路。

Based on these design guides, the analysis and design of a low phase noise and low power dissipation, with 0. 18μm CMOS process, integrated Colpitts crystal oscillator with automatic gain controlled feedback loop as the amplitude-limiting technique, low dropout voltage regulation with band gap reference voltage and frequency tuning monotonicity guaranteed by digitally controlled variable capacitor array is performed to revise influence caused by process, voltage and temperature conditions for. handset. The oscillation with very stable amplitude value and frequency value is achieved.

它利用对工作温度、电源电压和制造工艺不敏感的带隙基准源和在集成电路中元件特性之间匹配好的优点产生了一个不随温度、电源和工艺改变而且可以跟踪工艺变化的参考基准电压，同时通过自动频率控制环路利用数字电路控制可变电容阵列控制瞬态频率稳定度，校正温度、电源和工艺改变对频率的影响，从而可以在很宽的电源电压范围(2.7v—3.7v)和温度范围(-40℃—125℃)以及CMOS工艺参数变化(TT、FF、SS、SF、FS)的条件下提供幅度稳定、频率稳定的振荡输出信号。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了