磁路

The paper introduces the magnetic circuits and their relatives in electric Machinery Course,including the ferromagnetics, law of magnetic circuit , law of electromagnetic induction and the inductance reactance, from the need for the course teaching.

本文从电机学要求出发，介绍磁路及相关内容，它主要包括铁磁物质、磁路定律、电磁感应定律和电感的电抗等问题。

The magnetic flux linkage equations and voltage equation are established according to the magnetic circuits and the magnetic conductance equation is listed according to the relations among magnetic flux, current and magnetic circuit.

模型从三相五芯柱变压器磁路出发，建立了磁链方程、电压方程，并根据铁芯和铁轭的磁通和电流关系及磁路关系列出磁导计算方程；给出了仿真模型的参数确定方法，其中参数确定与变压器的结构紧密相关。

ABSTRACT The researches of this thesis are carried out around the development of high performance machine tool spindle permanent magnet synchronous motor and its drive system. Five parts are included: First of all, concerning the operating characteristics of the machine tool spindle drive system, the optimum current control strategies of spindle PMSM are determined; The design rules of spindle PMSM's key parameters are summarized, based on the study on the influences of the design parameters on the performances of the PMSM operating at different current control strategies; The practical methods to improve the flux-weakening ability of the PMSM are presented; Based on the analysis and comparison of the operating performances of PMSM with different rotor structures, a novel PMSM rotor structure, which is of excellent mechanical performance, suitable for fluxweakening operation and can improve the torque output capacity in the same time, is presented.

本文围绕高性能机床主轴永磁同步电动机及其传动系统的设计研究展开，所做工作主要包括五部分：首先，确定了主轴永磁同步电动机定子电流的最优控制策略；通过对不同控制策略下主要设计参数对主轴永磁同步电动机性能影响的计算研究，总结了参数设计规律；提出了永磁同步电动机弱磁扩速的实用措施；在分析比较不同转子磁路结构电机的性能，尤其是弱磁扩速能力的基础上，提出了一种机械性能优越，易于弱磁扩速，同时能保证电机恒转矩运行时的转矩输出能力的新型转子磁路结构。

The invention concerns a vibration damping device comprising an element converting mechanical energy into electrical power mounted on a base designed to be fixed on a structure to be damped. Said converting element comprises an electrodynamic motor including a coil (20) mechanically connected to the base (1) and a magnetic circuit suspended by at least a spring (22), and the coil (20) is coupled with an electric charge having a resistive component and it includes a control device for varying the value of said resistive component based on at least two values.

本发明涉及一减震装置，所述装置包括一种把机械能转换为电能的能量转换装置，所述装置可安装在待减震结构的底座上，其特征在于，所述转换装置包括一电动机，所述电动机有一线圈(20)及一磁路，所述线圈采用机械方式连接底座(1)，所述磁路通过至少一根弹簧(22)悬置着，线圈(20)耦合着一具有一电阻元件的电载荷，并具有一控制装置，用于按至少两个值来改变所述电阻元件的阻值。

The variable section permanent magnet is decomposed into a series of magnetic circuit with lumped parameters in this paper.

利用分段法将变截面永磁体分解为一系列具有集总参数的磁路，推导了两种凸度系数下的永磁磁路的通用计算公式，该方法适合于非线性磁阻的计算机编程计算。

The main research work include (1) introduces the gemal method and steps of asteroidal magneto design, especially the method and steps of electromagnetism compute, follow these steps, the design parameters such as relative structure dimensions, coil and magnetic circuit parameters can be obtained. This method is easy to use.

本文主要工作如下：(1)本文指出了星形磁电机设计的一般步骤和方法，重点讨论了电磁计算的方法步骤，据此可以得出有关机械结构尺寸、绕组及磁路参数等设计参数；本文提出的磁路计算方法，简单适用；本文还提出了一系列关键参数规范化设计模型的经验系数。

The paper introduces the working principle of the device, calculation method and step of the magnetic circuit, makes magnetic division to working airspace and calculates magnetic circuit by leakage coefficient method.

介绍该装置的工作原理、磁路的计算方法及步骤，对工作气隙进行磁场划分，用漏磁系数法计算磁路。

Non-linear transient magnetic circuit method was used to model the shading coil of double E -type electromagnet.

采用非线性瞬态磁路方法建立E型电磁铁分磁环的磁路数学模型，结合电磁场分析和可视化技术对交流接触器的工作特性进行了仿真计算，通过实验验证计算的正确性。

Non-linear transient magnetic circuit method was used to model the shading coil of double E -type electromagnet. With electromagnetic field analysis, the characteristic of ac contactorwas simulated by visual technology. The simulationwas validated by experiment.

采用非线性瞬态磁路方法建立E型电磁铁分磁环的磁路数学模型，结合电磁场分析和可视化技术对交流接触器的工作特性进行了仿真计算，通过实验验证计算的正确性。

The magnetic circuit was designed by finite element method, and the precision of magnetic circuit was improved.

作者采用有限元法对力矩器的磁路设计进行了深入的研究，提高了磁路设计和分析的精确程度。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。