查询词典 speed controller

This paper shall attempt to look at some aspects of controller synthesis for the multivariable servomechanism problem when the plant to be controlled is subject to uncertainty-in this case,a controller is to be found so that satisfactory regulation/tracking occurs in spite of the fact that the parameters of the plant may be allowed to vary,subject only to the condition that the resultant perturbed system remains stable.

例7 本篇将致力于探讨在待检对象受到不确定性的影响，而仅仅服从受扰动的系统最终保持稳定，这一条件之情况下的多变量随动系统中控制器综合的某些方面的问题。在这种场合，尽管受控对象的参数允许发生变化，而控制器必须具有令人满意的调节和跟随性能。

Compared with PID controller, PIDA algorithm can provide more phase lead, more damping and system stability, but it cause big controller's output.

该算法提供了更大的超前相角，改善了系统阻尼特性和稳定性，但造成控制量过大。

This paper presents a stability criterion for design iterative learning controller. From the criterion,one can change the design problem into finding a positive definite discrete matrix kernel. It has been shown that what kind of variable can be controlled by the iterative learning,(2) and what kind of filter can be included into the controller.

摘要提出了一种针对自学习控制的稳定性判据，应用这一稳定性判据将自学习控制器的设计转化为寻找正定离散矩阵核，从而回答了两个问题，其一什么样的量可以通过自学习叠代加以控制，其二学习叠代中什么样的滤波环节的引入不会影响学习收敛性。

The improvement project for intelligent fuzzy controller to take the place of PI controller is advanced.This paper researches the water level control of pressurizer in reactor control system of Daya Bay Phase I, and describes the method of intelligent fuzzy control in practice.

本文提出以智能模糊控制器取代原有常规PI控制器的改进方案，并以大亚湾一期工程反应堆控制系统的稳压器水位控制为研究对象，着重阐述智能模糊控制原理在具体实践中的使用方法，最后对改造前后的系统输出进行LabVIEW仿真比较。

Then the hardware and software principium of GPIB controller and channel controller is explained in details .

由此出发，重点介绍GPIB控制器和通道控制卡的硬件和软件的设计思路和实现方法，它是自动测试系统的基础和关键。

The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.

摘 要：针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题，提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法：在电机基频以下调速时，略去了常规的磁链观测控制环节，改进了转矩计算方法，通过转矩滞环控制选择所施加的空间电压矢量。

A new brushless DC motor DTC scheme was studied to solve those problems associated with direct torque controlof brushless DC motor,such as difficulty to control flux and complexity to estimate torque.The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.

摘 要：针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题，提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法：在电机基频以下调速时，略去了常规的磁链观测控制环节，改进了转矩计算方法，通过转矩滞环控制选择所施加的空间电压矢量。

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。

In charpter Ⅳ, by the divisibility of the system, the design program of the multi-grade adaptive controller of the system is presented, and under the suppositions of realitic subsystems, the global stability of two-grade adaptive controller of the system is proved.

第四章，由电液伺服系统的可分性，对电液伺服系统自适应控制的可实现性进行了分析。

In the local area network, sometimes in order to facilitate management of the establishment of regular first primary domain controller and backup domain controller in the domain for each user to set up user name, and a large number of information resources stored in the member server within the domain.

在局域网中，有时为了管理上的方便经常首先建立主域控制器和备份域控制器，在该域中为每位用户设立用户名，并将大量的信息资源存放在该域的成员服务器内。

The studies on the developing of new media are very important to the increasing of the area density of HDD and to the implementation of hybrid recoding technology.

光磁混合记录方法，是一种可以突破超顺磁极限的限制，并进一步提高硬盘记录密度和读写速率的一种新型超高密度信息存储方式。

In io, mTOR inhibition promotes T cell anergy under conditions that would normally induce priming.

体内研究中，在正常可激发免疫反应的条件下，抑制mTOR可促使T细胞无能。