直轴

曲轴部分采用的是直轴和偏心轮一起精密铸造的技术，刚性好，动态性能优。

The crankshaft is made using a straight shaft and the eccentric wheel with precision casting technology , good rigidity , dynamic performance and .

曲轴部分采用的是锻造后，再由加工中心一次装夹加工完成，较直轴和偏心轮一起精密铸造的方法精度差，刚性不好。

The crankshaft is used after forging , machining center by once clamping completed processing , precision method than the straight shaft and the eccentric wheel with precision casting is bad , not good rigidity .

介绍了三相异步电动机的直轴和交轴模型的建立方法，并利用MATLAB语言对两种模型进行仿真，仿真数据包括定子电流、电磁转矩以及转速。

Introduces a constituting method for A-axis and D-axis models of three-phase asynchronous motor . Simulating for those two models by MATLAB language .

通过对直轴中扭转弹性波主动控制的仿真计算，讨论了LMS算法中的收敛系数对控制系统收敛时间的影响。

By computer simulation , the influence of the convergence coefficient in LMS algorithm on the convergence time of system is discussed .

直轴电流的自抗扰控制器除完成对id控制外，还要借助于控制器中的扩张状态观测器（ESO），完成对动子速度的辨识。

The first controller controls straight axis current ( i_d ), and identifies the speed of mover by means of expanded state observer ( ESO ) in it .

含阻尼绕组同步发电机电磁力矩系数的传统算式忽略直轴阻尼绕组与励磁绕组的互感，且不考虑自动励磁调节（AVR）的作用。

In traditional formulas of electromagnetic torque coefficients for the damped synchronous generator , the mutual inductance between d-axis damping winding and excitation winding is neg-lected and the effect of AVR ( Automatic Voltage Regulator ) is not considered .

利用H∞控制理论设计了VSC-HVDC系统附加H∞控制器，使用Matlab/Simulink进行了控制器的仿真研究，其结果表明设计的控制器能有效抑制交流侧直轴电压分量的扰动。

Additional H_ ∞ controller of VSC-HVDC system is designed by use of H_ ∞ control theory . Meanwhile , a simulation on Matlab / Simulink is proceeded to do some researches and the results show that the designed controller can effectively limit the disturbance of AC voltage d-axis component .

异步电机的交直轴模型及其仿真

Simulation researching for A-axis and D-axis models of asynchronous motor

直轴水工渐变段的计算机辅助设计与绘图

Computer Aided Design and Drawing for Hydraulic Gradual Transitions with Straight Axis

超精密非球面镜面模具直轴磨削的研究

Study of ultra-precision vertical grinding for aspheric lens mould

用时步有限元法计算汽轮发电机直轴瞬态参数

Calculation of D Axis Transient Parameters of Turbogenerator by Time-stepping Finite Element Method

直轴旋转叶片型面的数学模型

The Mathematic Model of Straight Axis Rotate Blade Profile

本文主要阐述了电站汽轮机转子塑性变形后的三种直轴工艺。

Three straightening techniques of distorted rotors are presented .

直轴的计算机辅助设计系统开发

The development of CAD system of axis parts

本文分析了稀土永磁同步电机直轴电枢反应。

The D-axis armature reaction of rare earth permanent magnet synchronous generator has been analysed .

新概念内燃机&往复活塞式直轴内燃机

A New Concept Internal Combustion Engine & Reciprocating Piston Type Franck Shaft Internal Combustion Engine

直轴瞬变短路时间常数

Direct axis transient short circuit time constant

基于CAD/CAM的直轴方圆渐变段的设计与实现

Design and Implementation of Square-Circle Transition Region with Straight Axis Based on CAD / CAM

内置式永磁同步电机交、直轴电枢反应电抗的准确计算

Accurate Calculation of Quadrature-axis and Direct-axis Armature Reaction Reactance for a Interior Permanent Magnet Synchronous Machine

新系统通过定子电压直轴分量直接控制定子磁链的变化率；

In new system , variation of stator flux linkage is directly controlled by d-axis stator voltage ;

汽轮发电机饱和同步电抗的波动凸极同步电动机矢量控制中交直轴电流变换的研究

Research on quadrature - direct axis current transformation in vector control of salient - pole synchronous motors

直轴瞬变电抗和直轴超瞬变电抗的计算运用了场路耦合法，计及了励磁绕组端部漏抗对计算结果的影响。

The coupled field-circuit method is used to calculate the direct-axis transient reactance and the direct-axis sub-transient reactance .

该方法综合考虑了交直轴电枢反应共磁路的问题以及永磁体励磁的饱和影响问题。

At the same time , it also considers the influence of the saturation of the permanent magnet .

减小直轴电感可以增大最大电磁转矩、基本转速、功率因数；增大交轴电感可以增大最大电磁转矩，减小基本转速则对功率因数影响不大。

Namely , maximum electromagnetic torque and basic speed and power factor are increasing with d-axis inductance being reduced .

针对直轴&轴承系统，计算了不同轴承油膜压力分布时的轴应力；

The stress of shaft in shaft-bearing system is calculated on condition of different film pressure distribution of bearing .

计算分析结果表明，直轴&轴承系统中轴承油膜压力分布形态对轴强度影响显著；

The calculating results indicate that the distribution of film pressure remarkably affect the strength of shaft in shaft-bearing system .

实测交直轴电感与三维有限元分析结果吻合较好，验证了分析的正确性。

The experimental results which agreed well with calculated results by3D finite element method verified the validity of the analyses .

通过实验测试了在不同频率及转子在不同轴向位置时电机的交直轴电感。

And the inductances of a prototype were measured at different test frequency and with taper rotor at different axial locations .

利用解析法对永磁体和铁磁体多支路并联磁路的交、直轴电抗进行了推导，给出了满足工程设计精度的计算方法。

The q-axis and d-axis reactance , in which is parallel structure with several branches , is studied by analytical method .

利用等效交直轴法和保存磁导率法借助有限元软件对多台表面式和内置式永磁同步电机的交直轴电抗参数进行了计算，将计算结果汇总分析。

Calculations of quadrature and direct axis reactance parameters for many sets of surface-mounted and interior PMSMs are carried out using the method .