| 1. | Research on the estimation of conversion state of equivalent current test based on phasor measurement
基于相量测量的等效电流量测变换状态估计的研究 |
| 2. | Influences of measured values from phasor measurement units on equivalent current based measurement transform algorithm in state estimation
相量测量单元测量值对状态估计中等效电流量测变换算法的影响 |
| 3. | Rcs of facets of targets coated ram was resolved by combining impedance boundary condition ( ibc ) and geometric optics ( go ) and rcs of those edges were approximated by computing the rcs of edges of impedance wedge through method of equivalent currents
其中，涂覆目标面元的散射场是通过结合阻抗边界条件和几何光学法( go )而得到；而涂覆目标棱边的散射场则是通过等效电磁流法求解阻抗劈的边缘绕射场近似得到的。 |
| 4. | The properties of different permanent magnetic bearings with both axial and radial magnetization are studied by mean of equivalent current and finite element method respectively . the levitation forces and stiffness have been calculated and agreed well with measured data
研究了采用轴向和径向不同磁化方向的永磁环所构成的永磁磁悬浮轴承悬浮特性，分别运用等效电流法以及有限元法分析计算了磁悬浮力以及刚度特性。 |
| 5. | In addition , the mom - po hybrid method is proposed to dissect radiation from radome - enclosed antennas and the correction impedance matrix upon which the solution to equivalent currents of radome ' s surface depend is built . a comparative analysis of those methods is finally presented to examine respectively their accuracy as well as computational efficiency
最后，对矩量法物理光学法的混合算法分析问题的过程进行讨论，给出混合算法分析带罩天线辐射问题的具体解决方案，建立混合算法求解天线罩表面等效电磁流的校正矩阵。 |
| 6. | By successful solution of non - linear magnetic fields and revision of the program , we can reach following conclusions : in the computation of nonlinear magnetic fields , if iteration method is used , under - relaxation is necessary when amending the permeability distribution in soft magnetic materials ; and when < wp = 5 > calculating the equivalent current density in permanent magnets , under - relaxation is not a necessity ; when searching for permeability values by interpolation method on the demagnetization curve of soft magnetic materials , if a fixed saturation point is set , around this point an abrupt change of permeability values will be obtained ; this sudden change may cause a little problem in the smoothness of magnetic field distribution ; because the magnetic circuits of microwave tubes are too complicated , in the author ' s view , to describe the working state of a magnet system , the working points of magnets can not do it properly but average energy production of magnets will serve ; as to indicate the quality of a magnet system design for microwave tubes , the efficiency of magnetic energy utilization will be a very good criterion
由此得出结论，在非线性磁场计算中：采用迭代法的情况下，在各迭代循环之间进行磁导率修正时，一个欠松弛迭代过程是必需的；对永磁体中的等效电流修正时可以不作欠松弛迭代；在纯铁的磁化曲线上指定某一个固定的磁感应强度为磁饱和值，会使得插值求出的磁导率在该磁饱和值附近有一突变,这一突变对计算结果中磁场分布变化的光滑性稍有影响。在微波管磁系统设计中，由于微波管磁路比较复杂，作者认为磁体的工作点并不能很好地反映磁体的工作状态，而采用平均磁能积为衡量磁体工作状态的标准更加符合微波管磁系统的实际情况；要表示磁系统设计好坏的程度，则用磁能利用的效率为标准更好。 |
| 7. | In order to meet the needs of real time computation of electric power system state estimation , the estimation algorithm based on decomposing the measurement of voltage scope and power scope and the estimation algorithm based on the measurement transformation of the equivalent current are brought forward and deduced in this thesis . these two algorithms all can make the jacobian matrix a constant matrix and they are stimulated
为了满足电力系统状态估计实时性的要求，本文首先提出并推导了可以使雅可比矩阵为常数阵的基于分解电压测量量和功率测量量的估计算法和基于等效电流测量变换的估计算法，并对此进行了仿真。 |
| 8. | An idea to establish a cancellation database on the basis of the smooth of rcs of the protected target is also introduced the field scattered by facets and fringes and the multiple scattering effect are calculated by a hybridization of the theory of physical optics , equivalent currents and areal projection - physical optics , which are utilized to compute the rcs of an aeroplane
还提出了根据被保护目标rcs的平滑值确定对消数据库的思想。应用物理光学法、等效电磁流法和区域投影物理光学方法计算了面元散射场、劈边缘绕射场以及多次散射场，采用此方法计算了某飞机的rcs ，并对该目标的rcs进行了平滑处理。 |
| 9. | In order to consider the different heating of positive - sequence current and negative - sequence current of the motor stator generally , the equivalent current is adopted instead of the traditional phase current . the way how to gather positive - sequence current and negative - sequence current is brought forward , and the recurrence fourier - algorithm is adopted to calculate the effective value of current and voltage , the effective value of positive - sequence current and negative - sequence current
为了全面考虑感应电动机定子正序电流和负序电流的不同发热效应，提出了正序电流和负序电流获取的方法，并采用递推傅氏算法来实现电流、电压及电流正序和负序分量的有效值的计算。 |
