查询词典 digital control

A detection system is presented for truth-preserving sampling corer in this paper. Based on control unit AT89S52, the temperature and pressure in the corer are monitored, and moreover, long distance transmission of digital signal is realized in this circuit.

介绍一种对保真取样器内部情况进行监控的检测系统，该系统以AT89552单片机为控制单元，对取样器内部的压力和温度进行检测，并利用RS485接口，实现数字信号远距离传输，在海底沉积物保真取样中有一定的实用性。

The intelligent CPS is based on Digital Signal Controller, using dsPIC30F6012A as the core control device.

本文对以断路器为主体的智能CPS进行系统设计，设计了智能动态控制方案。

Digital Cymometer control procedures for all study reference, when used according to its own system changes.

数字频率计控制程序，供大家学习参考，使用时根据自己的系统修改。

The digital cymometer is an important Module in Electric- Testing and Automatic- Control region.

数字频率计是电子测试、自动化控制等设备中不可或缺的重要模块。

This paper first utilizes the ideological design digital controler of double-loop control based on the magnetic defi...

在此基础上，考虑系统的参数摄动及外扰等不确定因素，基于系统的不确定模型运用变结构控制理论设计离散滑模变结构控制器，并进行了必要的仿真研究。

As a most important part of DEH (Steam Turbine Digital Electro-hydraulic Control System), EH system is composed of oil supply system, actuator and emergency trip system.

EH系统是汽轮机数字式电液控制系统——DEH中的一个重要组成部分，它主要由供油系统、执行机构和危急遮断系统三大部分组成。

The main product and the operation range: the paperless recorder\the pressure verify meter、the libration regulater、the multi-channels detecter、the intelligent PID regulater、the digital eletronic meter、the phasic triger、the power regulater、the thermocouple、the Thermo-resistant、the boiler control、the sewage dispose、the complete set of eletric auto engineering empolder、design、fixing.

公司主要产品及业务范围：无纸记录仪、压力校验仪、振动变送器、多路巡检仪、智能PID调节仪、数字电工表、移相触发器、电力调整器、热电偶、热电阻、锅炉控制、污水处理、电气及自动化工程开发、设计、成套。

The main product and the operation range: the paperless recorder、the pressure verify meter、the libration regulater、the multi-channels detecter、the intelligent PID regulater、the digital eletronic meter、the phasic triger、the power regulater、the thermocouple、the Thermo-resistant、the boiler control、the sewage dispose、the complete set of eletric auto engineering empolder、design、fixing.

公司主要产品及业务范围：无纸记录仪、压力校验仪、温度校验仪、振动变送器、多路巡检仪、流量积算仪、智能温控表、数字电工表、电阻分选仪、称重显示仪、移相触发器、电力调整器、涡轮流量传感器、热电偶、热电阻、锅炉控制、污水处理、电气及自动化工程开发、设计、成套。

It is a control surface for the embedded digital audio mixer of either the Deva IV or V location recorders.

它是嵌入式数字音频混合器或位置记录器的一个控制界面。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。