When accurate rotor flux orientation is realized,ψrq is zero,thus a slip frequency correction method is proposed to ensure accurate rotor flux orientation.
该文将定子电流矢量定向同步坐标系下的转子磁链观测器与间接矢量控制系统相结合,利用观测器得到的实际磁链计算转子磁场定向下转子磁链的q轴分量,并根据定向准确情况下转子磁链q轴分量为零的特点提出一种间接矢量控制转差频率校正方法,保证间接矢量控制系统对转子磁场的准确定向。
The stack method after normal moveout is not effective.
本文针对因存在噪音和信号比较弱 ,致使正常时差 (NMO)校正迭加方法难以奏效的问题 ,提出提高信噪比和增强反射信号同相轴连续性的共反射面元 (CRS)迭加方法 。
In view of the situation that normal moveout correction stack method could not work very well for the low signal to noise ratio, we give an enlarging common reflection surface stack method to raise signal to noise ratio and enhance reflect wave s continuity.
因此 ,针对因地震资料的信噪比较低而导致常规的正常时差校正叠加方法难以奏效的情况 ,提出了提高信噪比和增强反射波连续性的扩大反射面元叠加方法。
Slip Frequency Correction Method Base on Rotor Flux q Axis Component for Induction Machine Indirect Vector Control System
基于转子磁链q轴分量的异步电机间接矢量控制转差频率校正
Study on Fast Main Frequency-Correction Parameters Based on Phase Difference Method
基于相位差法的快速工频频率校正的研究
Application of Windowing Phase Difference Correcting Algorithm in Frequency Measurements of Electric Network Measurements
加窗相位差校正算法在电网频率测量中的应用
The Vector Control Simulation of the Slip Frequency of Asynchronous Motor
异步电动机转差频率的矢量控制仿真
Frequency Transition Function Construction Algorithm of Differential Frequency Hopping System
一种差分跳频系统频率转移函数构造算法
Algorithm of Carrier Frequency Offset Estimation for MPSK Signal Based on Energy Centrobaric Correcting
能量重心校正法估计MPSK信号载波频差
Study on Novel Maximum-torque Slip Frequency Control Technology
基于最大转矩输出的改进型转差频率控制技术
Positive frequencies are produced by anticlockwise rotation and negative frequencies by clockwise rotation.
正频率是用逆时针旋转来产生，而负频率是用顺时针旋转来产生。
A highly sensitive GPS signal acquisition technique using frequency error correction
应用频率误差修正的高灵敏度GPS信号捕获技术
Research of the Slip Control-Based System of Speed Sensorless
无速度传感器转差频率控制系统的研究
Study on motor control strategy of the mutual-feedtest bed based on slip frequency
基于转差频率的互馈试验台电机控制策略研究
Research on Slip Frequency Vector Control Scheme of Asynchronous Motor
异步电动机转差频率矢量控制方案研究
Analysis on Principle and Error of Charge-Balancing Voltage-Frequency Converter
电荷平衡式电压—频率转换器的原理及误差分析
Vector Control of Brushless Doubly-fed Machine with Cage-rotor Based on Slip Frequency Rotating Frame
基于转差频率旋转坐标系笼型转子无刷双馈电机矢量控制
video frequency/IF/RF pre-correction
视频、中频、射频预校正
Experimental Investigation in Double Closed-loop Variable Frequency and Adjustable Speed System of Slip Frequency Controlled Asynchronous motor
转差频率控制的异步电动机双闭环变频调速系统的实验研究
Matching design of encoder and frequency transition function in different frequency hopping system
差分跳频系统编码器与频率转移函数的匹配设计
An equipment that corrects the time base errors in video tape recorders.
一种校正视频磁带记录器中时基误差的设备。