| 1. | Quantum nonthermal radiation of arbitrarily accelerating black hole with electric and magnetic charges 磁荷的一类任意加速黑洞的量子非热辐射 |
| 2. | Computational accuracy of equivalent magnetic charge method is high , but its calculation is complicated 等效磁荷法计算精度高,但计算过程相对复杂。 |
| 3. | The non - thermal effects of a spherically symmetric non - static black hole with electric charges and magnetic charges 带有电荷与磁荷的球对称动态黑洞的非热效应 |
| 4. | Utilizing the theory of magnetic charge , the model for computing the bearing capacity of permanent magnetic thrust bearing was established , and the influences of non - uniformity of magnet magnetization and soft magnetic material on the bearing capacity and rigidity of bearing were studied 运用磁荷理论建立了计算永磁推力轴承承载力模型,研究了磁铁磁化不均性和软磁材料对轴承承载力及刚度的影响。 |
| 5. | In many years , the analysis of mechanical characteristics of permanent magnet bearings is deeply studied by scholars in the world , mathematical model is built for analyzing mechanical characteristics of permanent magnet bearings by static magnetic circuit method and equivalent magnetic charge method 长期以来,国内外学者对永磁轴承力学特性进行了深入地研究,建立了采用静磁路法和等效磁荷法分析永磁轴承力学特性的数学模型。 |
| 6. | The general situation and progress of magnetic dipole theoryresearch during recent twenty years in china were introduced briefly including magnetic dipole ; linear and strip magnetic dipoles of finite lengths ; magnetic force on a magnetic particle ; the effect of magnetizing field orientation on the revelation of defect by magnetic particles ; longitudinal magnetization of rod , tube and cuboid steel ; the relationship between the slot depth in a workpiece and magnetic leakage field ; the cause of stray magnetic pattern along base apex edges of a workpiece magnetized circumferentially ; the analytic expression for the magnetic leakage fields inside and outside the slot on the cylindrical surface of a disc ; and the effect of a needle - like magnetic medium on the magnetic force between two point magnetic charges 简述20年来中国无损检测中磁偶板子理论研究的概况和进展,主要介绍磁偶极子,有限长磁偶极线和极带,磁粉颗粒的受力,磁化场方向对磁粉显现缺陷的影响,棒料、管材和方钢的纵向磁化,工件表面沟槽深度对其引起漏磁场的影响,周向磁化时工件底棱上的杂乱显示成因,圆盘边缘柱面上沟槽内外漏磁场的解析表达式和针状磁介质对两个点磁荷间磁力的影响等。 |
| 7. | Abstract : the general situation and progress of magnetic dipole theoryresearch during recent twenty years in china were introduced briefly including magnetic dipole ; linear and strip magnetic dipoles of finite lengths ; magnetic force on a magnetic particle ; the effect of magnetizing field orientation on the revelation of defect by magnetic particles ; longitudinal magnetization of rod , tube and cuboid steel ; the relationship between the slot depth in a workpiece and magnetic leakage field ; the cause of stray magnetic pattern along base apex edges of a workpiece magnetized circumferentially ; the analytic expression for the magnetic leakage fields inside and outside the slot on the cylindrical surface of a disc ; and the effect of a needle - like magnetic medium on the magnetic force between two point magnetic charges 文摘:简述20年来中国无损检测中磁偶板子理论研究的概况和进展,主要介绍磁偶极子,有限长磁偶极线和极带,磁粉颗粒的受力,磁化场方向对磁粉显现缺陷的影响,棒料、管材和方钢的纵向磁化,工件表面沟槽深度对其引起漏磁场的影响,周向磁化时工件底棱上的杂乱显示成因,圆盘边缘柱面上沟槽内外漏磁场的解析表达式和针状磁介质对两个点磁荷间磁力的影响等。 |
| 8. | Thereafter mathematical model on magnetic tensile force along axial direction was established based on magnetic charge integral calculus by equivalent magnetic charge theory , by which characteristics and relationship among structural parameters of magnetic poles and magnetic tensile force , as well as effect on the swimming characteristic of the robot by magnetic tensile force , were calculated and experimented 基于等效磁荷理论,采用磁荷积分法建立了驱动器的轴向磁拉力模型,对驱动器磁极结构参数与磁拉力的关系特性以及磁拉力与机器人游动关系特性进行了理论与试验研究。 |
| 9. | The dissertation places an emphasis on the research of mechanical characteristics of permanent magnet bearings , research is mainly done in the following aspects : mechanical characteristics of permanent magnet bearings is analyzed by static magnetic circuit method and equivalent magnetic charge method respectively , mathematical models are also built by the two methods 本文的工作内容围绕永磁轴承力学特性的研究展开,主要做了以下几个方面的工作:采用静磁路法和等效磁荷法对永磁轴承的力学特性进行了系统地分析,并建立了这两种方法的数学模型。 |
| 10. | The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm , based on the current model of pm . besides , two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages . then the effects of the motor parameters on the flux distribution are discussed 本文对空芯动圈式直线同步电动机进行了深入细致的研究,内容包括: ( 1 )采用电流模型推导出两种计算永磁磁极二维气隙磁场的解析公式(集中电流法、分布电流法) ,同时介绍了两种永磁电机气隙磁场计算方法(磁荷法,直接求解拉氏方程法) ,分析各种方法的优缺点,讨论电机参数对气隙磁密的影响; ( 2 )介绍了单层同心绕组的布置方式,根据安培定律推导出空芯动圈式直线永磁同步电动机的静推力计算公式,分析静态力?位移特性; ( 3 )建立空芯动圈式直线永磁同步电动机动态仿真模型,仿真不同驱动方式下电动机起动、稳态运行时电磁力、速度、位移的变化情况。 |