One-tenth decade Research on Nonlinear Interaction Effects in Avalanche Device and Its Mechanism in High Order Frequency Multiplication 1/10的十倍频程雪崩器件非线性效应及高次倍频机理研究
Aiming at the existing problem in harmonics measurement of power system, the paper ( presented) a collecting method based on frequency multiplication phase-locked. 针对电力系统谐波测量方法存在的问题,提出了一种基于锁相倍频采集方法。
The utility model discloses a clock synchronized frequency multiplication circuit, in particular relating to clock synchronized frequency multiplication circuit in circuit design and PLC design. 本实用新型公开一种时钟同步倍频电路,尤其涉及电路设计和可编程逻辑器件设计中时钟倍频电路。
Improvement of Phase-locking Moir é Fringe Subdivision Method Using Frequency Multiplication Technology 乘法倍频对锁相式莫尔条纹信号细分方法的改进
The Anti-jitter Fourfold Frequency Multiplication Circuit Design of a Rotary Encoder Based on FPGA 基于FPGA的旋转编码器抗抖动四倍频电路设计
Research of inverter power system based on unipolar& frequency multiplication SPWM 基于单极性倍频SPWM调制的逆变电源系统研究
Design of Bi-Directional Radio over Fiber Transmission System Based on Optical Frequency Multiplication 基于光学倍乘法产生光毫米波的全双工毫米波光纤传输系统设计
The application of frequency multiplication modulation in detecting current for active power filters 倍频调制在电力有源滤波器电流检测中的应用
The industrial grating signals can be digital frequency multiplication with a phase-locked loop ( PLL) controlled by a microcomputer. 用微型计算机控制锁相环(PLL)可对计量光栅信号进行数字倍频。
Based on the two dimensional holographic spectrum and the bandpass phase filtration, a method of reconstructing the low frequency axle center trail and the frequency multiplication axle center trail was proposed for the defects in the diagnosis of rotating machinery with conditional axle center trail method. 针对传统的轴心轨迹方法在回转机械诊断中的缺陷,在二维全息谱和带通保相滤波的基础上,提出了重构低频和倍频轴心轨迹的方法。
Frequency multiplication and velocity analysis 频率倍增与速度分析
Adaptive Linear Frequency Multiplication in Double-frequency Laser Orientation System 自适应线性倍频在双频激光定位系统中的应用研究
A method of designing rotating-speed and torsion detecting system of electric device performance based on ARM and CPLD is presented, and also the method of implementing four frequency multiplication measuring and orientation inspecting circuit using CPLD is introduced. 介绍了基于ARM单片机和CPLD的电动装置转速和转矩测试仪的设计方法,给出了光电编码器输出脉冲信号的四倍频鉴向相电路的CPLD实现方法。
LQ Control Strategy Based on Frequency Multiplication Sampling and State Prediction 基于倍频采样和状态预测的LQ控制策略
In the paper, controlling the phase-shift of precession signal with the method of digtal phase-locked frequency multiplication and the conveniently controlling direction of the gyroscope precession was realized. The problem of controlling direction of the gyroscope precession while searching and tracking of the target was completely solved. 论文采用锁相倍频的数字式方法控制进动信号移相,实现了对陀螺转子进动方向的方便控制,彻底解决了导引头在对目标的搜索与跟踪时进动方向控制的问题。
This method rotational speed signal takes from with the diesel engine coaxial connected generator, and uses the phase-locked loop technology realization signal the frequency multiplication. 该方法的转速信号取自与柴油机同轴相连的发电机,并采用锁相环技术实现信号的倍频。
Tracking Frequency Based on Frequency Multiplication Phase-locked and Synchronization of Multi-period 基于多周期同步和倍频锁相的频率跟踪技术
To introduce the T/ M rotational speed measuring method applied to the direct torque control ( DTC) system. The frequency multiplication circuit is designed by means of phase-lock loop. Therefore, the range of rotational speed detected is expanded and the accuracy is ensured. 介绍在直接力矩控制系统中采用T/M测速方法,并利用锁相环技术设计了倍频电路,从而拓宽了测速范围,保证了测速精度,为改善系统的低速性能奠定了良好的基础。
The tested part adopts a referenced command current optimize PWM detecting method based on signal's time domain vertical property, and high speed simulating switch is controlled by frequency multiplication phase-locked circuit and EPROM unit. The circuit configuration is simple and easy to implement. 其中检测部分采用了基于信号时域正交特性的参考指令电流优化PWM检测方法,并通过锁相倍频电路和EPROM单元来控制高速模拟开关,电路简单,便于实现。
A new method of detecting compensating reference current for active power filters by frequency multiplication modulation ( FMM) is presented in this paper. 提出了一种电力有源滤波器补偿参考电流的倍频调制检测新方法。
The significant advantage of the proposed scheme lines in that the pulses frequency multiplication and counting were not driven by pulses rising edge, but driven by sampling and comparing pulse states. 这种方案的主要优势在于倍频和计数操作不是通过信号的边沿触发,而是通过对信号的状态进行采样和比较来实现。
Focus on the research of the sine wave magneto-optical modulation& frequency multiplication method, and analyze the precision of this method. ( 4) Compare and summarize simulations of the rectangular wave and other wave magneto-optical modulations. 重点对正弦波磁光调制&倍频法进行了实验研究,并对其精度做了一定的分析。
Two optical generation methods of mm-wave signals with frequency multiplication are proposed. 提出了两种利用光学方式产生多倍频毫米波的方法。
The work in this dissertation solve the problem of direct high order frequency multiplication in millimeter wave band by nonlinear solid device and provide a new technology to obtain high quality millimeter wave signals. 本论文突破了毫米波频段非线性器件高次倍频的技术难题,提供了一种新型短波长毫米波频率源技术,对打破国外技术封锁,应用于军事和民用电子系统,具有重要的现实意义。
Both of the proposed frequency multiplication methods are simple in structure, and good in scalability. 这两种方法结构简单,具有可扩展性。
In addition, a digital phase-locking frequency multiplication method based on FPGA was proposed, where the decimal frequency-division was realized using the integral frequency-division assemble. 此外,还提出一种基于FPGA的新型数字锁相倍频方法,利用整数分频组合实现了小数分频。
Millimeter-wave frequency multiplication technology is an important method to obtain high-qualified millimeter-wave signal. 毫米波倍频技术是一种获取优质毫米波信号的重要方式。
According to the topology structure of main circuit, design the control circuit. It includes design of locking signal circuit, lacking phase detection circuit, locking phase and frequency multiplication circuit, and PWM pulse-width modulation circuit. 根据主电路拓扑结构,设计了其控制电路,包括同步信号电路、缺相检测电路、锁相倍频电路和PWM脉宽调制电路的设计。
To generate high efficiency, high output power, broad band, low noise, tunable and compact millimeter and submillimeter wave sources, frequency multiplication is a very effective way to realize it now. 为了产生高效率,大输出功率,宽带宽,低噪声,可调谐和紧凑的毫米波和亚毫米波源,倍频方式是一个非常有效的途径。
The scheme uses CORDIC algorithm to generate digital baseband Chirp signal, and then though orthogonal modulation and frequency multiplication to expand the signal bandwidth, which satisfies UWB communication requirement. 该方案利用CORDIC迭代运算产生数字基带线性调频信号,再通过正交调制和倍频技术拓展信号带宽,实现带宽满足UWB通信要求的Chirp-UWB信号。