Owing to the semi-conductor is sensitive to the temperature, so an experimental research on the temperature characteristics of magnetic sensing resistance are conducted under both the free and the biasing magnetic field.

Therefore, the magnetostrictive force model was derived, and the effects of the set static bias magnetic field and alterative current magnetic field on the magnetostrictive force was analyzed systematically.

为此，本学位论文还理论研究了磁致伸缩力模型，系统分析了磁致伸缩力与静态偏置磁场和交变磁场之间存在的作用关系。

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Calculated and analyzed the magnetic field spatial distribution of the current-carrying wires, the study found that when the wires with the small current, above the surface of the substrate near 50 microns generated one zero magnetic field point or one magnetic field minimum point.

详细计算和分析了上述载流导线磁场的空间分布，研究发现在导线中通以较小的电流并附加一定的偏置磁场，即可在基底表面上方50微米附近产生磁场零点或磁场最小值。

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It is indicated that under arbitrarily inclined magnetic field the radiation resistance of MSWs propagating in the different direction are not equal, which is obviously different from the case of normal magnetization;

计算了YIG薄膜中传播的静磁正向体波特性，结果表明：在倾斜偏置磁场中沿不同方向激发的静磁波具有不同的辐射阻抗，这与垂直磁化情形明显不同；

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In magneto-optic ( MO) film waveguides, the interaction between guided-optical waves ( GOWs) and magnetostatic waves ( MSWs) excited by the RF signal within microstrip line under external bias magnetic field may lead to the Bragg diffraction effect and mode conversion of the GOWs.

在磁光薄膜波导中，在外加偏置磁场作用下，微波信号激发的静磁波与入射导波光作用会引起导波光的Bragg衍射效应并发生模式转换。

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The conclusion may help to appropriately design the bias magnetic field, and as a result the diffraction performance of the MSW based MO Bragg cells can be improved.

该结论对适当设计磁光Bragg器件的偏置磁场，提高其衍射性能等方面有指导作用。

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Research on Finite Element Simulation in Bias Magnetic Field of the Magnetostrictive Sensor Used for Steel Strands

钢绞线用磁致伸缩传感器偏置磁场的有限元分析

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The elastic guided waves are generated by application of the static bias magnetic field and the dynamic magnetic field which is induced by the alternating current passing the exciting coil, and the elastic guided wave displacement formula is derived by its equation of motion in the steel pipe.

在静态偏置磁场和通过传感器激励线圈交变电流形成的交变磁场作用下，管道中产生弹性导波，由弹性导波运动方程，推导其位移表达式，由位移求出应变。

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Analysis on Nonuniform Bias Magnetic Field of Magneto-optic Bragg Cells

磁光Bragg器件的不均匀偏置磁场分析

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With the analyses of magnetic biases and internal magnetic field in magnetostrictive moment actuator, the strongpoint and the shortcoming of the giant, medium and small size moment actuators are studied, and as a result, a new kind of giant moment actuator was developed.

通过对磁致伸缩力矩激励器的磁偏置和内部磁场的分析，研究了大、中、小型力矩激励器在磁偏置和内部磁路上的优点和缺点，并在此基础上发展了一种新型的大型力矩激励器。

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The relationship between the high peak power junction circulator and the bias magnetic field is described and a method to improve the temperature characteristic of this circulator is given.

阐述高功率结式环行器的温度特性与偏置磁场的内在联系，给出提高温度特性的方法。

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And that the insertion loss can be decreased under appropriately inclined bias magnetic field, so that the diffraction effect of guided optical waves in MSW-based Bragg cells is also enhanced.

适当倾斜偏置磁场可降低静磁波的插入损耗，从而可增强静磁波对导波光的衍射效应。

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The output characteristic of the transducer in different bias magnetic fields was studied in detail. The results of experiments were compared and analyzed in order to guarantee the reliability of testing results. The research results have an important meaning for the design and development of magnetostrictive transducers.

主要研究换能器在不同偏置磁场下的输出应变的变化，经过多次测试，对实验结果进行比对与分析，保证测试结果精度高、误差小，得到的实验结果对于换能器的设计与开发具有重要意义。

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The experiments of the stress and magnetic induction under different bias magnetic fields are carried out, the results show that the magnetic induction is maximal when the bias magnetic field is 5kA/ m.2.

进行了一定偏置磁场下外应力和磁感应强度的实验研究，实验结果表明偏置磁场为5kA/m时，磁感应强度最大。

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From the experiments of different prestresses without magnetic bias and different magnetic biases without prestress, it was deduced that the actuator output can be improved significantly by appropriate prestress and magnetic bias.

零偏置磁场驱动下不同预应力对致动器位移输出影响的实验和零预应力下两种偏置磁场对致动器输出性能的比较实验，验证了合理选择预应力和偏置磁场可有效地改善致动器性能的论点。

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When playing heat treatment on the amorphous wires, adding proper biasing magnetic field can further improve the GMI effect, linearity and sensitivity of the specimens, furthermore the soft magnetic property was optimized.

在对非晶丝进行热处理时加适当的偏置磁场，能进一步提高样品的GMI效应、线性度和磁场灵敏度，优化非晶丝的软磁性能。

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The primary contents and original contributions of this thesis are as follows: ( 1) In view of the problems of magnetic bearing, a hybrid active magnetic bearing system is proposed by a permanent magnet generate static bias magnetic field and electromagnets provide the control magnetic field.

针对目前电磁轴承中存在的问题，提出了利用永久磁铁提供偏置磁场、电磁铁提供控制磁场的混合式主动磁悬浮轴承系统。

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Then, the finite difference method is employed to get numerical solution of quantum dynamic equations of superconducting quantum interference device at the static magnetic field bias and offset alternating magnetic field respectively.

本文分别推导了量子干涉仪的经典动力学方程及其量子化的量子动力学方程；并利用有限差分法求解了静磁场偏置和交变磁场偏置的超导量子干涉仪量子动力学方程的数值解。

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The generation and propagation of Magnetostatic Forward Volume Waves ( MSFVWs) in the Bi-doped YIG film under transversely nonuniform bias magnetic fields are analyzed using the variational approach.

采用变分方法分析了垂直偏置磁场横向不均匀时掺Bi的YIG薄膜中微波静磁正向体波的激发和传播特性。

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Bearingless motor make the rotating magnetic field of itself as the bias magnetic field, so magnetic power greatly reduced, with the advantage of high quality energy-saving.

由于该电机磁悬浮是以电动机本身的旋转磁场为偏置磁场，所以磁悬浮功耗较小，具有节能质优的特点。

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The negative feedback system with fixed bias is designed based on nonlinear response of the magnetostrictive materials so as to keep the sensor work at its most sensitive situation.

针对磁致伸缩材料的非线性响应特点，设计了定偏闭环反馈系统，使探头始终工作在最佳偏置磁场下。

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