查询词典 control unit

This paper presented a practical mathematical model of coordinated control object of supercritical pressure unit, adopting observer to estimate coal heat value, and design a synthetic coordinated control system with state feedback based on increment function observer-KDx, PID, intelligence control and British thermal unit.

该文给出超临界机组协调受控对象的一种实用数学模型，采用观测器预估燃煤的热值，设计一种基于增量式函数观测的状态反馈+串级PID+智能控制+热值补偿的综合型协调控制系统。

As long as the root of the characteristic equation is within the unit circle of z-plane and the corresponding PID parameter is got, the closed loop control system is sure to be stable. Although the root of the characteristic equation can vary within the unit circle of z-plane,different value may affect the control property differently.

本文所采用的这种确定PID参数的方法，虽然可以使特征方程的根在z平面的单位圆内任意取值，但各种取值情况对变风量空调系统的控制品质的影响却不同，因此，要对各种特征方程的根的取值情况进行寻优，本文采用遗传算法对特征方程的根进行寻优，从而使控制器的参数得以优化。

The temperature control system consists of AT89S52 single-chip microcomputer, cortege type keyboard unit , display unit and temperature control circuit of solid state relay,using microprocessor AT89S52 to collect and control temperature in real time.

温控系统由AT89S52单片机、行列式操作键盘、显示、继电器控温电路等部分组成，使用AT89S52单片机对温度进行实时的检测和控制，显示电路采用74164芯片进行动态扫描，能够同时显示当前温度和设定温度值。

Detailed introductions were made to the application in frequency converter for unit series multi-electrical level, power bus, micro-computer control and artificial intelligence, total digitalized optical fiber control and power unit standard modulization, insulated grid bipolar transistor drive circuit intelligentize etc.

介绍了变频器的市场情况以及变频技术的现状，详细介绍了单元串联多电平、功率母线、微机控制和人工智能、全数字化光纤控制以及功率单元标准模块化、绝缘栅双极晶体管IGBT驱动电路智能化等技术在变频器上的应用。

In the design of automatic control system for isomerization unit from heptane tower of PX devices, single-loop control is used in the control programme. There is a total of 11 circuit , of which is 8 single-loop control system and 3 cascade control system. It has done the choice and relevant calculation on the controller, control valves and measurement devices used in the control system. There is a total of eight chapters in this design.

在对PX装置异构化单元脱庚烷塔自动控制系统进行设计时，控制方案基本采用单回路控制，总共有11个设计回路，其中单回路控制系统8个，串级控制系统3个，并对控制系统所要用到的控制器，控制阀和测量元件等进行了选择且进行了相关的计算。

The system further includes an high-level data link control controller for transmitting and receiving a packet data to and from a subscriber wireless connection unit through an HDLC channel, a dynamic random access memory having a first buffer for storing a mobile image packet data transmitted between the HDLC controller and the LAN controller and a second buffer for storing a packet data other than the mobile image, and a CPU for performing the corresponding control function of a packet data routing unit.

系统进一步包括用于通过HDLC信道向/从用户无线连接单元发送/接收分组数据的高级数据链路控制控制器；具有用于存储在HDLC控制器和LAN控制器之间传输的运动图象分组数据的第一缓存器和用于存储运动图象分组数据之外的分组数据的第二缓存器的动态随机存取存储器；和用于执行分组数据路由单元的相应控制功能的CPU。

This system consists of a power unit, a four-electrode probe, a constant current drive unit, pre-amplifier and filter units, a signal generator unit, and data acquisition and control units, where the signal generator unit, and the data acquisition and control units are carried out utilizing DAQ card (PCI-6024E) which is mounded inside a PC.

本系统硬体方面主要包括下列几个部份：电源电路单元、四端电极单元、定电流驱动单元、前置放大与滤波单元、信号产生单元、和资料撷取与控制单元等。

Option One: a multi-polar set of ordinary water pipe installation balancing valve hole ① in charge of water line and the 20-hole HVAC balancing valves installed ② Install a balancing valve in the shaft exit ③ air box installed in each balancing valve ④ In each of the tenants on the installation of balancing valve outlet Option Two: Using the Dynamic Balance valve ① fan coil unit installed in the end of the balancing valve ② air-condition the box at the end of the balancing valve is installed After the economic comparison, the final adoption of the balance valve program ① air box end of the installation of balancing valve and the automatic control valve ② retail and office space within the District, a combination of two or three fan coil valves Valves and Controls, for personal use outside the district office for each fan coil unit and automatic control valve of a balance valve 3, balance valve application summary ① long pipeline DRS installation of large multi-level system price higher than the end of the normal balance valve device a dynamic balance valve.

方案一：安全阀多极设置普通水管井间安装平衡阀①在主管线与20个暖通水管井间安装平衡阀②在竖井出口位置安装平衡阀③在每个空调箱上安装平衡阀④在每个租户的出水口上安装平衡阀方案二：使用动态平衡阀①在末端装置风机盘管上安装平衡阀②在末端装置空调箱上安装平衡阀经过经济比较，最终采纳的平衡阀方案是①空调箱末端安装平衡阀及自控阀②零售和内区写字楼两或三个风机盘管合用一个平衡阀及自控阀，外区写字楼每个风机盘管自用一个平衡阀及自控阀 3、平衡阀应用总结①长管线异程大系统多级安装普通平衡阀价格高于末端设备一级动态平衡阀。

We can produce all electric control system of electrostatic demists precipitator with different control level, different control type and different hardware configuration and different unit configuration according to the requirements of our custom for improvement of requirements for production of automatic level and unit running reliability.

低压控制系统要求 DCS 控制站留有的 DO ， DI ， AI ， AO 数量由现场仪表及控制设备多少而定。运行状态，实时数据显示及各执行设备的相互连锁，由 DCS 组态完成。

The design of the generator line multiplying automatic synchronizing unit synchronizing unit SID-2CM 's coordinating with several synchronization point sharing synchronizing unit automatic selector switch SID-2X is used in Shanxi Datang International YunGang Thermal Power Co.LTD, realized the No. 1 unit's generator –transformer-line group circuit breaker, high voltage plant transformer circuit breaker, start spare transformer circuit breaker accept change DCS automatic control devices.

山西大唐国际云冈热电有限责任公司采用 SID-2CM 型发电机线路复用自动同期装置与 SID-2X 型多同期点共用同期装置自动选线器配合的设计，实现了1号机的发—变—线组断路器、高厂变断路器、启备变断路器接受 DCS 的全自动控制。

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。