磁链

The operating range suitable for three-phase reaction was obtained and a mathematical model established. The results show that MSB formed by fine magnetizable powder and fliudizing flow can be operated stably in a wide range. MSB has three kinds of regimes: particulate, chain, and magnetically condensed. In these regimes, the chain regime is the best for three-phase reaction. When Ni-RE-P catalyst particles mixed with some iron powder, magnetically stabilization is easily achieved; therefore, it is possible that NiRE-P catalyst can be controlled in the bed for reaction more easilly if adding certain percentage of iron powder.

研究结果表明：细粉铁磁性颗粒形成的磁稳定床可在较宽流速范围内稳定操作，该磁稳定床有三种操作状态：散粒状态，链式状态和磁聚状态，其中有利于进行气液固三相反应的操作状态是链式状态；当磁稳定床在最小流化速度和带出速度之间操作时，床层处于链式状态；最小流化速度和带出速度可用（1-24）、（1-25）、（1-27）、（1-33）式计算；弱软磁性Ni-RE-P非晶催化剂中混入定量铁粉颗粒后便可形成磁稳定床，因此利用混入铁粉颗粒在外加磁场作用下控制弱磁性非晶催化剂颗粒进行反应的方法是可能的。

The speed-sensorless vector control of induction motor is one of the hot topics in electric-drive field, whose main study is to adopt a kind of quick and effective method to accurately observe the rotor flux and rotor speed in the condition that the parameters vary and certain and uncertain disturbance exists.

感应电机的无速度传感器矢量控制是目前电气传动领域研究的热点之一，其主要研究内容为在存在参数变化、扰动及各种不确定性干扰的情况下，采用一种快速、有效的方法对转子磁链、转子转速进行较为准确的观测。

The fuzzy controllers were used to replace PID torque adjustor and PID flux adjustor of VVVF vector control system.

用模糊控制器代替VVVF矢量控制系统的PID转矩调节器和PID磁链调节器。

The spin-1/2 dimerized antiferromagnetic system is related to spin-Peierls tran-sition.There are still some discrepancy on the behavior of the ground energy densityand energy gap,such as pure power-law,logarithmic correction to the pure power-law in the uniform,integer powers in the dimerized limit,etc.

自旋S-1/2的二聚化反铁磁链与spin-Peierls相变有关，在对其基态能和激发能隙的临界行为描述上仍存在一些不完全一致的观点：如均匀极限的纯幂级数律，纯幂级数律的对数修正；二聚化极限的整数幂级数行为等。

This paper presents several control methods for BLDC motor, and describes their fundamental principles ,advantages and disadvantages in brief. The method of speed-independent function,based on a new flux linkage function,is explained in detail. This method makes it possible to detect the rotor position over a wide speed range from near zero to high speed.

本文介绍了几种无位置传感器无刷直流电动机的转子位置检测方法，并对它们的基本原理，优缺点作了简单的说明，详细地阐述了基于一种新磁链函数之上的与速度无关的位置函数控制方法，利用这种方法从零转速到高转速的宽速度范围内能检测到转子位置。

The inductance and torque models were also proposed from the fitting curve of flux linkage.This model function expression is simple and easy to modify the coefficient.

该模型函数表达式简单、系数修改方便、计算精度高，并且能够直观的反映SRM的磁链、电感和转矩变化情况。

Finally, an optimized control of constant ratio of the voltage and frequency is developed.

第二部分是对电机直接转矩控制的研究，在具体实现中对磁链和转矩的快速响应进行了研究。

According to the characteristics of SRM, this thesis designed a conventional sliding mode speed controller.

主要内容有：通过实测的电流-磁链数据，拟合了试验样机的最大电感曲线，并在此基础上建立了SR电机的非线性电感模型。

The simulation results show that the new algorithm can effectively eliminate the integrator drift with higher precision of flux estimation under permanent magnet synchronous motor wave input of EMF.

仿真结果证明，新算法在PWM 波反电动势输入情况下仍具有很高的磁链观测精度，可以有效地消除积分漂移误差。

After research on vector control of AC induction motor, this paper presents the method of calculation on flux linkage .

通过对交流电机矢量控制系统的研究，介绍了转子磁链位置的计算方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。