| 1. | The vector control mathematical model of linear induction motor is established under the synchronization reference frame
摘要在同步旋转坐标系下，建立了直线感应电动机的矢量控制数学模型。 |
| 2. | Low frequency models and high frequency models are set up in abc coordinate , coordinate , and dq coordinate , respectively
分别在abc静止坐标系、静止坐标系和dq旋转坐标系中建立了低频和高频数学模型。 |
| 3. | The flux terms in the governing equations was directly calculated in the inertial coordinate system without projection to the rotate one
通量项计算直接在惯性坐标系下进行，没有投影到旋转坐标系下，方便了计算。 |
| 4. | In this paper we discussed the evolution of two states system and geometric phase in a rotating magnetic field by using the method of coordinate transformation
本文用旋转坐标系系法对二能级系统的在旋转磁场中的演化和几何相进行了研究。 |
| 5. | By means of vector analysis , dymazttic model of sssc is deduced in dq orthogonal co - ordinate within synchronously rotating reference frame , and dynamic characteristics is invcstigatcd
采用矢量分析方法，推导了基于同步旋转坐标系的sssc的动态数学模型，并在此基础上研究了sssc控制潮流的动态特性。 |
| 6. | In rotating frame of reference , the construction method of three dimensional finite volume tvd schemes is systemically analyzed , in which implicit euler defiference is applied for time discretization
在旋转坐标系下，发展了一种含旋转源项的雷诺平均navier - stokes方程的三维有限体积tvd格式，时间离散采用隐式euler方法。 |
| 7. | The steady - state errors of current closed loop system with pi current regulator in stationary and synchronous frames are compared using complex vectors . also , the corrector of rotor displacement control is studied by the root locus method
应用复合矢量概念，对比了静止坐标系和同步旋转坐标系pi电流调节器组成电流闭环系统的稳态误差，并用根轨迹法对转子位移控制系统的校正环节进行了研究。 |
| 8. | Taking core loss into account has important effect to improve the torque performance of the motors " field oriented control . in this paper , the transient mathematical model of the asynchronous motor with core loss is setup . the method is proposed that minimizes the loss in a variable speed and torque at the synchronous rotating coordinate
在对损耗分析的基础上，建立了考虑铁损时异步电机的动态数学模型，推导出在同步旋转坐标系下变速、变转矩时使电机功率损耗最小的方法，并且结合矢量变换提出了基于快速转子磁场定向的矢量控制。 |
| 9. | The paper analyzed the basic theory and mathematic model of three phase voltage pwm inverter and proposed one kind of control strategy based on the voltage - current double - loop . it used the exterior loop to control the voltage the eps outputted , and used the inner loop to control the current . simulation testified that the control method could improve the dynamic response character and interference rejection ability
在建立三相电压型pwm逆变器在两相同步旋转坐标系下的数学模型的基础上,提出了一种三相电压型pwm逆变器基于电压电流双闭环的控制方法,利用电压外环实现对输出电压的稳定控制,电流内环实现对输出电流的控制,仿真证明该方法有效地改善了系统的动态响应及抗干扰能力。 |
| 10. | Aimed at rotating wheels of hydrodynamic torque converter , the basic formula that suited hydrodynamic torque converter was given out ; the model of type yj380 hydrodynamic torque converter was established and the finite element method was chosen , the model was taken into an appropriate boundary conditions in order to proceed the simulative calculation of the internal flow field in torque converter , at last the theoretic results were compared with the experimental results
摘要给出了适合于变矩器的旋转坐标系下的基本方程组；建立了yj380型液力变矩器三维模型，选择了有限元法作为其分析方法，给模型加以适当的边界条件，对其内部流场进行三维动态仿真；将理论计算结果与实验结果进行对比分析。 |
