查询词典 loop control

Based on the discussion on the formation of the main loop and control strategy, the construction scheme of the control system for high-voltage rectifying circuit is presented.

通过对主回路的构成和控制策略的讨论，提出了高压整流电路的控制系统的构成方案。

The performance of magnetic suspension is determined mainly by its control system. Due to the inherent nonlinearities and open-loop instability of the magnetic suspension system, as well as the problem of uncertainties caused by parameter variety and disturbance, increase the difficulty of magnetic suspension control technology.

悬浮性能的好坏主要取决于控制系统的设计；由于悬浮系统本身固有的非线性特性和开环不稳定性，以及参数摄动和外干扰引起的不确定性等问题，增加了悬浮控制技术的难度。

The technique made full use of the characteristic of PR controller which can realize zero steady-state error in AC input signal in stationary frame. In the method, the active and reactive current component in the vector control strategy were transformed in the stationary frame to achieve the objective of keeping the DC-link voltage constant, adjusting the power factor and decoupling the active and reactive power. Compared with conventional double close-loop proportional integral controller, the PR technique is better in harmonic compensation without the complex rotating frame transformation and the couple or feedback voltage which is easily influenced by temperature and circuit parameters. The control algorithm is easy to be realized while the robustness and power quality is improved.

该方法充分利用了PR控制器能够在静止坐标系下对交流输入信号无静差控制的优势，将矢量控制策略下的有功电流和无功电流分量转换到静止坐标系下进行调节，实现网侧变换器维持直流电压稳定和调节功率因数的控制任务和双馈电机有功、无功功率的解耦控制，与传统的双闭环PI控制相比，该策略无需繁琐的坐标旋转变换，不存在受温度及电路参数影响的耦合项和前馈补偿项，且易于实现对系统低次谐波电流的补偿，减小了控制算法实现难度，提高了控制系统的鲁棒性和电网电能质量。

A neural network was used to design a PID controller with adaptively adjustable parameters for the vehicle stability control program, and a self developed hardware-in-the loop simulator was presented. The tests were made to debug the control program with the above mentioned simulator.

设计了面向车辆操纵稳定性控制的车轮制动神经网络PID控制器参数自调整算法，介绍了自行研制的车辆ESP硬件在环试验平台，采用该平台进行了控制算法的台架试验。

In the control system,a simple control which substituted for the multiple-loop servomechanism was applied.

在生产过程中，如何调整每个拉拔电机的转速，保持各个环节的张力平衡，是个关键问题。

The PVC insulated and sheathed control cable is suitable for used in occasion of control, monitoring loop and

聚氯乙烯绝缘和护套控制电缆使用交流额定电压450/750V及以下控制、监控回路及保护线路等场合。

Able to read power single-line drawings, motor control circuit diagrams and instrument control Loop diagrams.

能独立阅读配电单线图，马达控制原理图，仪表控制回路图

A novel robust design method of cascade control system is proposed for the reheated steam temperature control system of 300MW power-unit in Yuanbaoshan Power Plant. The method successfully solves the problem that the design of main loop and subloop interact each other and the parameter of the controller is difficult to be tuned.

本文所作的主要工作如下：结合带偏置的继电反馈辨识方法和基于期望幅相裕度的整定方法，设计了一个简单有效的、易被工业过程采用的自整定PID控制器。

Base on inductive circle loop, use to counting frequency mode detect vehicle's velocity, length, runoff, arrival and departure, and transmit the corresponding figures to the upper computer in tollgate control center through RS-232 serial port of the toll computer, or provide control signal for other toll advice.

基于感应式环形线圈，采用计频方式检测车辆的速度、长度、流量、到达与离开，并将有关资料通过RS232串口送至收费站监控室的监控主机。

All signals of the closed-loop system are proved to be semi-globally uniformly ultimately bounded under the proposed control, while the effectiveness of the proposed control is illustrated by simulations.

证明了所提出的控制方法能够保证闭环系统的所有信号半全局一致最终有界，并通过仿真验证了该方法的有效性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。