A pulse frequency modulation (PFM) with discrete frequency is designed.
设计了一种离散频率的PF M控制方式。
A discrete frequency control method is proposed for thyristorized static switch.
介绍了用于感应电机起动的离散频率控制方法。
A kind of induction motor soft start control method based on discrete frequency principle is introduced.
介绍了一种基于离散频率原理的电机软启动控制方法。
A concept and a numerical formula of flowing velocity on many blades are presented to discuss noise in the discrete frequency.
为了讨论离散性频率噪声，本文提出了多叶叶道流速激发的概念和计算公式。
It is a basic formula of acoustic characteristics in discrete frequency of the blade in which the gas flowing has many classes.
这是多级叶轮气流系统离散性频率声学特性的一个基衣公式。
It has four start mode: the ramp voltage start, the limit current start, the ramp speed start and the discrete frequency start.
所研究的软起动器具备四种起动方式：电压斜坡起动、限流起动、转速斜坡起动和分级变频起动。
The frequency synthesizer is a kind of discrete frequency singal generator with high stability, and it is widely used in communication, radar, apparatus and navigation system.
频率合成器是一种频率稳定度较高的离散间隔型频率信号发生器，广泛应用在通信、雷达、仪器仪表及导航系统中。
In the study of flow oscillation and discrete frequency noise of impinging jet, it is found that there is a critical pressure ratio for a given nozzle and a nozzle-to-plate distance.
为探索冲击射流离散频率噪声的产生机理，系统地研究了冲击射流离散频率噪声的特性。
Within these pulses are a number of discrete colours of light in what is known as a "frequency comb".
伴随这些脉冲的是很多离散光，被称为“频率梳”。
The paper presents a method of motion curve frequency domain filtering in Omni-directional M-mode echocardiography images based on Discrete Fourier Transform (DFT).
介绍一种基于离散傅里叶变换(DFT)的全方向M型超声心动图运动曲线频域滤波技术。
The alarming frequency of sophisticated and targeted advanced persistent threats has given further weight to the safety argument across both process and discrete industries.
复杂而有针对性的先进持续威胁的警报频率，进一步加重了整个过程和离散行业的安全参数。
Mechanism of the oscillation instability is then illuminated in frequency domain by amplification at the artificial boundary and multi-reflection of wave motion in a finite discrete model.
根据波在人工边界的放大效应和在有限离散模型中多次反射的概念在频域内阐明了这一常见的振荡失稳的机制。
A method of using fast Fourier transformation (FFT) to calculate the frequency characteristics of discrete mathematical model is introduced.
介绍了利用快速富里叶变换(FFT)计算离散数学模型频率特性的方法。
The error analysis shows that the measurement error is caused by the noise of the accelerometer, discrete double integration, noise of beacon and frequency characteristic error.
对线加速度计辅助惯性姿态角测量的误差分析表明，测量误差由加速度计噪声、二次积分离散化、信标噪声和加速度计频率特性误差组成。
For discrete convolution equation set, generally, people use Fourier transform method to solve. But in some positions, zero frequency will lose.
对于离散卷积方程组，一般采用傅氏变换的方法求解，但在某些特定系数的情况下，零频率丢失。
This paper proved that a frequency stochastic sequence obtained from a stationarily correlated time series by using discrete Fourier transform is orthogonal.
本文证明了时间域内的平稳相关序列经离散傅里叶变换之后，听得到的是频域内的正交随机序列。
This paper introduces an analyzing method for evaluating the color even degree on the tile surface in two dimensional frequency domain, that is by adopting two dimensional discrete fourier transform.
本文对采集的瓷砖图像采用二维离散傅利叶变换对瓷砖颜色分布均匀度在二维频域范围内进行分析，提出了一种瓷砖颜色匀度的评判方法。
This paper describes the need to transform the continuous periodic signal in time domain to the discrete signal in frequency domain by using Fourier Series (FS).
讨论了利用傅里叶级数把连续周期时域信号转换成离散的频域信号的必要性。
Actually the kernel design in the recognition method based on discrete time - frequency representation is a problem of feature selection from the ambiguity functions to reduce feature dimension.
基于离散时频分布的信号识别方法，将时频核设计问题转化为以信号自模糊函数为原始特征的特征选择问题，以实现特征降维和信号识别。
The filter processes input discrete sampling signal to recover continuous signal and suppress harmonic noise, and the zero-crossing frequency measuring method is improved.
该滤波器通过处理输入离散采样信号获得连续信号并抑制谐波噪声，改进了过零测频方法。
Finally, natural frequency is obtained by the existence condition of nontrivial solution of the discrete algebraic equations derived from the integral equations.
最后由积分方程的离散化方程组有非平凡解的条件，求得固有频率。
When we say "frequency transform" or talk about "representing frequency" we are usually talking about the Fourier transform, implemented as the DFT, or discrete Fourier transform.
当我们说“频率变换”或者说“代表频率”是我们通常所说的傅里叶变换，如离散傅里叶变换dft实现，或。
The numerical results demonstrate that the larger the zone of timing jitter and the higher the frequency, the less proportion the discrete PSD component is in the total PSD.
数值计算结果表明，随时间抖动范围增大和频率提高，离散功率谱分量所占比例下降。
Kalman filter used in linear discrete stochastic system has good convergence and the ability to remove high frequency noises.
卡尔曼滤波用于线性离散随机系统具有非常好的收敛性和滤除高频噪声的能力。
The SPM-D21 provides automatic frequency, phase and voltage matching using either analog or discrete output signals.
扫描探针显微镜- d21提供自动频率，相位和电压匹配使用模拟或离散输出信号。
The SPM-D10YB synchronizer provides automatic frequency and voltage matching using discrete output bias signals.
扫描 探针 显微镜 -d10yb同步器，提供自动频率和电压匹配使用离散输出偏置信号。
ZVS conditions (developed in the paper) lead to an interesting way to control the converter, and a discrete variable frequency control is proposed.
ZVS工作条件产生了有利的变流器控制方法，并提出了一种离散变频控制方法。
ZVS conditions (developed in the paper) lead to an interesting way to control the converter, and a discrete variable frequency control is proposed.
ZVS工作条件产生了有利的变流器控制方法，并提出了一种离散变频控制方法。
应用推荐