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Multi-motor synchronization variable speed drive of dyeing and printing machines without dancers and tension sensor;

印染设备无松紧架无张力传感器多电机同步调速

The paper studied the principle of the all-angle MUM(Mass-Unbalanced Modulation) reading realized through synchronous demodulation,discussed the factors that influenced the reading precision,and analyzed the reading errors resulted from the non-orthogonality of the electrodes-fixed frame and the inconsistent between the scale factors of different measuring channels.

研究了采用同步解调法实现静电陀螺仪质量不平衡调制(MUM)全姿态读取的原理,讨论了影响读取精度的因素,分析了各电极轴转子位移测量电路比例因子不一致和电极轴不正交造成的读取误差。

MFSK signal can be demodulated by synchronous demodulation and envelope demodulation.

MFSK信号可用同步解调和包络解调两种方式进行,采用不同解调方式的MFSK通信系统具有不同的性能特点,重点讨论采用同步解调的MFSK通信系统的抗噪声性能。

In synchronous demodulation, frequency and phase of a local carrier must be synchronous with sending station, distortion will be caused in output signals of demodulation as frequency error and phase error occur in the local carrier.

在同步解调中,本地载波的频率和相位必须与发送端载波同步,当本地载波存在频率或相位误差时,会使解调输出信号产生失真。

The design scheme is tested and debugged on a three-phase asynchronous motor in the end,and the results show that the method of mixed modulation has lower current harmonic,more efficient use of supply voltage,lower noise than the synchronized modulation and asynchronized modulation.

分别用同步调制、异步调制、混合调制三种方法实现电压空间矢量脉宽调制型逆变器,在一台三相异步电动机上进行了试验调试,实验结果表明:与同步和异步调制相比,混合调制时电机电流的谐波小,电压利用率高,电机的高频噪声低。

Technical innovation of synchronic speed adjusting system for 74-type open-width scouring-bleaching machine

74型平漂机同步调速系统的技术改造

Research on PMSM Speed Sensorless Control for Elevator Drive;

永磁同步调速电梯无速度传感器控制研究

Poster speed and conveyer belt speed transfer speed in step , can is it stick to standard exactness and poster quality to guarantee.

贴标速度与输送带速度同步调速，可确保贴标准确度及贴标品质。

The Design and Implementation of High Speed Burst Demodulator

高速突发解调器的快速同步技术研究

Research on Halbach PMSM Speed Control System;

Halbach永磁同步电机调速系统的研究

The Research on System of Permanent Magnet Synchronous Motor Variable Frequency Speed Adjusting;

永磁同步电动机变频调速系统的研究

Synchronized surface electromyography for muscular coordination of legs in speed skating;

速滑中腿部肌肉协调性同步肌电分析

Research on Wide Flux Weakening Speed Range of Permanent Magent Synchronous Motor

宽弱磁调速范围永磁同步电机的研究

SVPWM speed of PMSM based on TMS320F2812

基于TMS320F2812的永磁同步电机SVPWM调速

PMSM Drive System Based on Single Neuron PID Controller

同步电机调速系统的神经元控制方法

Study on High Precision Speed Control System of PMSM

永磁同步电动机高精度调速系统研究

FPGA implementation for the synchronization system of wavelet-based multirate modulation

小波多速率调制同步系统的FPGA实现

The neurons PID SVC of synchronous generator

同步发电机的神经元PID调速控制

The Reacher of Synchrodrive Algorithms on Asynchronous Motor s Variable Frequency Speed Regulation;

交流异步电机变频调速同步传动算法研究

Stepless speed regulator regulates speed synchronously,with fast speed regulation and high production efficiency.

无级调速电机调速。整机同步运转。即有提速快、生产率高等特点。

Implementation of Word Synchronization for HF Low-speed Modem;

短波低速调制解调器字同步的实现方案

The timing of the gun was precisely synchronised with the turning of the plane’s propeller.

风门的调速与飞机螺旋桨的转动精确同步。

Study on Variable Speed High Efficiency Permanent Magnet Synchronous Motor and Its Drive System;

调速高效永磁同步电动机及其驱动系统的研究