查询词典 feedback control system

Some possible applications of wide-area measurement system in power system are gathered up, including applications in static analysis, recording dynamic procedures of the whole power network and post-contingency analysis, identifying and calibrating the dynamic model of power system, transient stability prediction and control, voltage and frequency stability monitoring and control, analyzing and damping the low frequency oscillation, global feedback control, fault location and parameter measurement o...

综述了广域测量系统(Wide-Area Measurement System，WAMS)在电力系统稳态分析、全网动态过程记录和事后分析、电力系统动态模型辨识和模型校正、暂态稳定预测及控制、电压和频率稳定监视及控制、低频振荡分析及抑制、全局反馈控制、故障定位及线路参数测量等方面的应用。通过这些应用可以看到，WAMS给电力系统分析与控制提供了新的视角和解决方法，值得深入研究。

Adopt AT89S51 MCU as the main part to realize the automatic control of the object motion locus in this design, system using multiturn potentiometer to measure the position of object, and introduces local closed-loop feedback control system link to correct error, in that case system can improve the accuracy of control and orientation.

设计采用AT89S51单片机作为核心器件实现对物体运动轨迹的自动控制，通过多圈电位器实现对悬挂物位置的精确测量，并引入局部闭环反馈控制环节对误差进行修正。以达到对物体的控制和对坐标点的准确定位。

Stability analysis of nonlinear magnetic suspension, the magnetic suspension system model was found based on electromagnet dynamics and voltage balance of the electromagnet coil; The feedback of position and velocity and current are used as the control variable; After the control rule was applied to the electromagnetic system, the louts criterion was used to get the range of the control parameter in which the system was steady-going.

非线性磁悬浮系统的稳定性分析，通过电磁铁动力学和电磁线圈的电压平衡方程，建立磁悬浮系统基本模型。求出系统奇点后，通过系统线性展开求出系统矩阵。用PD控制外加电流反馈量，将控制规律带入系统模型方程组求出矩阵的特征方程，由劳斯判据得知非线性系统稳定的位置反馈系数及取值范围。

Automated Control covers: feedback control, optimized control, stochastic control, and self-adaptive control, etc.

自动控制包括：反馈控制，最优控制，随机控制，自适应控制等。

The theory and approach are introduced, and the general expression containing arbitrary parameter is obtained for the feedback gain matrix. This method changes the problem of multi-input system to several problems of single-input. The number is the cycle index of system matrix. Compare with some known results, this method put forward that the least number of unknown entries of the feedback gain matrix is the order of the system matrix.

汽配置问题，得到了反馈增益矩阵的一般表达式，此表达式中含有任意参数，此方法将多输入线性系统极点配置问题转化为个数为系统矩阵循环指数的单输入系统的极点配置问题，进而推导出确定一个反馈增益矩阵的最少元素个数即为系统的阶数。

The stability theory of feedback system and isolated vibration of STM is studied, the method of operating point determinated for STM feedback system and the designing project of isolated vibration system for STM were proposed, the unstability problem of inchworm was overcome.

论文研究了STM反馈系统的稳定性和系统隔振的理论，提出了确定反馈系统工作点的有效方法和隔振系统的设计原则，并设计和制作了STM反馈和隔振系统。

The design of output feedback H(subscript ∞) controllers is discussed for nonlinear discrete singular systems. First of all, by means of generalized Lyapunov function and linear matrix inequalities, zero solution E-asymptotically stable is studied for the system, a sufficient condition is given such that the system is zero solution E-asymptotically stable and a H(subscript ∞) norm constraint. And the output feedback H(subscript ∞) controller is designed to guarantee the performance of the resulting closed-loop system.

主要对非线性离散广义系统的输出反馈H控制器的设计问题进行讨论，首先利用广义Lyapunov函数和线性矩阵不等式，对系统的零解E-渐近稳定性问题进行分析，在此条件基础上给出系统零解E-渐近稳定且具有H范数约束的充分条件，然后设计系统的输出反馈H控制器，使得闭环系统具有同样的性能。

In the course of the report, the news editors adopt the method of feedback more often to control the reporting activity, i.e. use the feedback information at every proceeding point to control the next stage of the report.

在报道进程中，新闻编辑通常更多地采用反馈控制方法来控制报道活动，即通过报道进展过程中每一个点上的信息反馈来控制报道的下一段进程。

Two PI adjustors were applied for wire feeding velocity control, one performed motor armature voltage feedback, the other one executed arc voltage feedback to determine the given velocity.3、 Exchanging data of power source and process controller by adapting 20mA current loop by a serial communication interface, which satisfy real time control demand.

该控制器具有焊接参数预置、记忆、锁定、数显以及自动引弧、收弧等功能。 2、焊接电源采用三相半控桥晶闸管整流电路，用不同方法计算偏差进行多变量数字解耦PI调节获得恒流、恒压、陡降和缓降四种输出静特性。

The substance of the Skyhook control is discussed and a new semi-active vibration control strategy based on acceleration feedback and velocity feedback is established.

该文讨论了Skyhook控制策略的本质，建立了基于加速度和速度反馈的半主动减振系统控制策略，该控制策略能使被控物体在该文所选择的性能指标函数下得到近似最优控制。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。