查询词典 control signal

With the small signal modeling of the rated working point proposed in this dissertation, we can applying the classic control theories to explain why gas discharge lamp can't work steady whiling connecting to the voltage souce, we also can design the electronic ballast's stable characteristics.

本文提出的气体放电灯在某一个额定工作点的小信号模型，能应用经典控制理论对具有负阻特性的气体放电灯直接接到电压源上时不能稳定工作的特性作了定量的方法，为电子镇流器稳定性设计和判别打下了一个基础。

Aiming at realizing embeddedARM control system on musical fountain, the design of software and hardware of this system was completed by Linux operating system with the frame of SAMSUNGs S3C2440 microprocessor. After extracting the sounds volume and tonality by dealing with the music signal in advance, the musical fountains spraying height, light and shape of water were controlled efficiently by embedded system.

为实现基于嵌入式ARM的音乐喷泉控制系统，采用三星公司以S3C2440微处理器为核心的架构，以Linux操作系统为平台，完成了音乐喷泉控制系统的软、硬件设计，并通过对音乐信号的预处理提取声音中的音量和音调，利用嵌入式系统有效地控制了音乐喷泉的喷水高度、灯光和水型变换。

In the automatic sprinkler system, alarm valve is a critical component, and its role to three factors: connect or disconnect the water supply, the output 600X Hydraulic Electric Control Valve alarm signal and the prevention of water pumped back into the water supply source, and through the alarm valve can be installed on the system of water supply and alarm device for testing.

在自动喷水灭火系统中，报警阀是至关重要的组件，其作用有三：接通或切断水源、输出报警信号和防止水流倒回供水源，以及通过报警阀可以对系统的供水装置和报警装置进行检验。

Compared with the traditional positioners, this has many advantages, such asproviding high control accuracy with low air consumption, low energy consumption,self-adjusting, wide application, the ability which can choose the flow characteristicand split range operation. Moreover, it has the function of displaying valve positionand sending alarm signal. At present, HART protocol instruments have wide marketrequirements. And it will play the leading role in the future.

与常规定位器相比，该定位器具有控制精度高、能耗低、调整方便、适用范围广及可任意选择调节阀流量特性和分程范围等优点，同时该定位器还具有阀位显示和故障报警等功能，有着广泛的市场需求，并将在相当长的一段时间内发挥主导作用。

ABSTRACT The research of metal transfer in metal gas arc welding is of great significance for the control of arc welding process and quality, the improvement of existing welding technology and the development of new welding equipment. With the powerful aid of welding arc spectrum which contains plenty of information of metal droplet transfer, this dissertation, which mainly aims at putting forward an effective detecting method with arc spectrum signal, has inspected the spectrum of metal gas welding arc and discovered their dynamic characteristics of each kind droplet transfer mode.

熔化极气体保护焊熔滴过渡的研究，对于焊接过程及质量控制、焊接工艺方法的改进和新型焊接设备的推出都具有重要意义，而熔化极气体保护焊电弧光谱中含有丰富的反映熔滴过渡的信息。

This ADC can change its resolution by the control unit of a multi-channel design for bio-electric and bio-image signal through SPI.

则在生理电讯号和生理影像讯号的撷取系统中，透过后端的控制来转换不同解析度的模式，达到不同通道共用一颗ADC的设计以结省整体系统面积和功耗。

These include: ground and coastal border protection systems based on radar and image intelligence designed to control international frontiers, airports, harbors, ground passes and railways; Signal Intelligence information gathering systems focusing on terrorist infrastructures; and commercial aircraft self-protection systems.

这些措施包括：地面和沿海边境保护系统基于雷达和图像情报旨在控制国际边界，机场，港口，地面传球和铁路信号情报信息收集系统，重点是恐怖主义的基础设施；和商用飞机自保护系统。

For the necessary vertical packaging machine, the computer measurement machine design, mainly applies in the particles transportation may the proceed signal recognition control the machine to stop automatically opens, is suitable for products and so on food, medicine, chemistry industrial product, screw, cap nut.

为配套立式包装机，电脑计量机设计，主要应用于颗粒物的输送可通过信号识别来控制机器的自动停启，适用于食品、医药、化学工业品、螺丝、螺帽等产品。

The system of the invention essentially comprises a frequency mixer, a cascade connection integral comb filter, a fraction-time interpolating device, a half-band filter, a signal shaping filter, a power detection module and a control interface.

系统主要包括混频器、级联积分梳状滤波器、分数倍内插器、半带滤波器、信号成形滤波器、功率检测模块以及控制接口。

During this research, detail test and analysis proved that vibration signal of ball mill can represent coal level of the ball mill and steel balls distribution. The test result could help to resolve a main problem of ball mill load measurement. The intelligent scheme for pulverizing system which was based on multi-sensors fusion technique as well as the intelligent control method was given in the thesis.

本文通过大量的分析研究和现场试验，通过对球磨机振动信号进行频谱分析，监测磨筒存煤量和钢球球径分布情况，初步解决了球磨机测控中一个关键问题；在此基础上，采用软测量、多传感器信息融合技术，引入神经网络模型等方法，并考虑与电厂DCS和计算机信息系统的连接，对智能化球磨机制粉系统进行了总体设计，在技术上有所创新。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。