控制矢量

The magnetization intensity and direction of AlNiCo PM can be controlled by pulses of d-axis stator current vector.

通过定子直轴电流矢量脉冲控制铝镍钴的磁化强弱和方向，使钕铁硼和铝镍钴产生的磁通共同穿过气隙；或者使钕铁硼产生的磁通部分穿过气隙、部分被铝镍钴在转子内部旁路，利用永磁体的记忆能力使永磁气隙主磁通受控。

The simulation results show that the vector control system based on this improved scheme has better dynamic and static performance. It solves a lot of problems such as larger error in the MRAS based on the back electromotive force when the motor runs across the zero speed and the instability based on the instantaneous reactive power in the regenerating mode and has high estimating precision.

仿真表明基于该方法的矢量控制系统动静态性能好，能有效解决反电动势模型参考自适应方法在速度过零点辨识误差大以及瞬时无功功率模型参考自适应方法在转速给定为负阶跃时转速不稳定问题，转速估计精度高。

The precision of motor parameter is the base of high-performance for sensorless vector control system.

摘 要：电动机参数的检测精度是提高无速度传感器矢量控制系统性能的基础。

A simulation model base vector control was built for the electric-wheel of the self-developed electical drive truck.

针对自行设计的交流电动轮驱动重型卡车电传动系统，建立基于矢量控制的传动系统仿真模型。

Variable control theory for doubly-fed induction generator is analyzed in this paper, and the control strategy of an adaptive PID controller based on neural network to realize the speed control of DFIG is proposed.

分析了双馈发电机矢量控制原理，提出了基于神经网络自适应PID 控制器对双馈发电机的控制策略。

Based on this background, this dissertation analyses the theories of vector control of induction machine, and designs a electric vehicle driver employing TMS320LF2407, IPM and so on.

在这个背景之下，本论文对异步电机的矢量控制技术进行了理论分析和研究，采用数字信号处理器TMS320LF2407为核心控制器，IPM为功率模块，设计并在车上运行调试和优化出适合电动汽车运行工况的电动汽车驱动电机控制算法。

The ship electric propulsion system that we are going to discuss consists of the following parts: six-phase double Y winding shifted by 30°synchronous motor, diode clamped three-level inverter, fixed pitch propeller and control installment of electric propulsion systems based on air-gap-field orientation vector control.

本论文所研究的船舶电力推进系统各个组成部分分别是：双Y移30°六相电励磁同步电动机、二极管嵌位式三电平逆变器、定距螺旋桨船舶推进器和采用基于气隙磁场定向矢量控制策略的电力推进系统控制装置。

The supersonic interacting flowfield induced by gaseous secondary flow injected into supersonic flow is typical and encountered in many fields, such as thrust vector control, gas-turbine cooling, and fuel-air premixing in scramjet engines, et al.

二次射流与超音速来流的干扰流场主要应用在推力矢量控制、飞行器气动控制、超音速燃烧和气膜冷却等方面。因为其复杂性和应用的广泛性，二次射流干扰流场多年以来一直是流体力学界的重要研究课题。

The vessel power electric propulsion PMSM has been controlled by the MC modulated space vector and DTC.

该控制策略同时实现了矩阵式变换器的空间矢量调制和永磁同步电机DTC控制，仿真结果验证了该方法良好的动态性能，有创新性。

Three type of dynamic equivalent circuit of asynchronous motor was figured out in this paper.

通过对异步电机的三种动态等效模型的数学推导，分析了用于矢量控制的异步电机T-Ⅰ动态等效电路和用于直接转矩控制的异步电机T-Ⅱ动态等效电路及其特定的物理意义。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。