矩形波

焊铝合金用IGBT交流矩形波弧焊逆变器

IGBT AC Square Wave Arc Inverte for Aluminium Alloy Welding

矩形波冲击时双线性包装系统的产品损坏边界

Damaged Bounds of Products Packaging System With Bilinearity Under Square Wave Shock

电流跟踪型矩形波PWM逆变器的优化开关策略

Optimal switch strategy of a current control PWM inverter with square waveform

变频采样PWM矩形波电流控制

Rectangular Waveform Current Control Using Self-Tuned Frequency Sampling PWM Method

矩形波板法测量光锥与CCD耦合器件的光学传递函数

Measurement for Modulation Transfer Function of CCD Coupled with Fiber Optic Taper by Rectangle Bar

矩形波直流脉冲TIG焊电弧稳定性的研究

Studies of arc stability in high frequency pulsed TIG welding with rectangular waves

在低频范围内，通过试验研究了矩形波脉冲频率f，脉冲宽度比B对刷镀速度的影响规律。

The influence of two parameters , frequency and pulse width ratio of wave pulse brush plating speed about , is studied on the base of experiment in this paper .

具体分析了预处理矩形波交流电电流频率f、电流密度J、处理时间t、处理温度θ以及cAl3+/cH+值对比电容量C的影响。

The influence on specific capacitance of current frequency , current density , pretreatment time , solution temperature and the ratio of cAl3 + / cH + is analyzed .

矩形波直流脉冲TIG焊小电流焊接薄板时，电弧稳定性是一个关键问题。

In the pulsed TIG welding of thin plates with low current , the stability of welding arc is the key problem .

使用DDS技术产生频率扫描信号，控制功率开关器件对直流高压高速开关，产生频率扫描的矩形波。

DDS technology is used to produce sweep frequency signal which drives power switching devices to switch DC voltage to produce sweep frequency rectangular wave .

最后400Hz矩形波通过LC谐振滤波电路输出正弦波。

Finally , the 400 Hz rectangular waves , by way of LC filtering circuit , yield sine-waves .

论文还研究了矩形波激励下的磁损模型，引入一个比例系数KD，定义为相同频率、相同磁感应强度下矩形波激励磁损与正弦波激励磁损的比值。

A ratio named KD is introduced and defined as the ratio of core loss under rectangular waveform excitation to that of under sinusoidal waveform excitation supposed both of which are under the same frequency and the same flux density .

该方案采用交流变频调速驱动系统、双逆变交流矩形波焊接电源、矩形波交流电弧的弧长自动调节系统、可编程控制器（PLC）为主控器的焊接程序控制系统等。

The speed change driving system of alternating current frequency conversion , alternating current rectangular wave welding current , the automatic arc length regulating system of rectangular wave alternating current arc and programmable language controller were adopted in the device .

用数学软件Matlab进行了数值模拟计算，发现折射率调制类型为矩形波的光栅传输谱不是由它的各次余弦光栅谱的线性叠加而成的。

The transmission spectra of LPG are numerically calculated by using the mathematical software , Matlab . It 's found that the transmission spectra of LPG with the rectangular index modulation are not the linear superposition of its cosine gratings ' spectra .

矩形波串法（boxcar）用于过程数据压缩，算法简单，压缩和重建的实时性好，获得广泛的应用。

Boxcar method is used generally to compress process data with simple and good real time performance of compression and restoration .

利用MOS管、半桥驱动芯片LM27222、栅极驱动变压器等器件，设计了变极性矩形波发生电路。

A rectangular wave generating circuit has been designed with MOSFETs , half bridge driver chip LM27222 and gate drive transformer .

本文推导了离子在矩形波四极场中的运动规律，并以常用于正弦波四极场的马绍方程参量a，q来表出离子的稳定性。

The ion motion in such an electric field is derived , and the stability of ions is presented in the a q diagram which is commonly used for sinusoidal wave quadrupole mass spectrometry in association with the solution of Mathieu Equation .

中频电源输出40kHz对称矩形波，通过输出网络与负载匹配。

Rectangular wave exported by medium frequency power supply is matched load by a export network .

例如，矩形波串法、后向斜率法、SDT算法、PLOT算法及矢量量化方法等，并进一步指出了过程数据压缩中的一些实际问题。

Several algorithms of process data compression are introduced in detail , such as box car , backward slope , SDT , PLOT and vector quantization . Furthermore , several practical problems of process data compression are pointed out .

利用MTS矩形波加载，研究了短纤维复合材料在反复低速冲击下的力学行为、温度变化规律和断裂特征，并与正弦波常规疲劳进行了对比。

Mechanical behavior , thermal and fracture characteristics of short fiber composites under repeated low velocity impact are studied by means of Materials Test System to simulate rectangle wave loading . They are compared with the results of the test under sinusoidal wave normal fatigue loading .

文章利用施密特（Schmitt）触发器为核心的状态延迟及转换元件，并采用恒流充放电技术，配合精确的时序控制，实现了一种高稳定的低功耗矩形波振荡电路。

In this paper , Schmitt trigger are used as key element of delay in steady-state transient , and a low power and highly stable pulse OSC waveform are generated by using current source charging and discharging under accurate timing control .

一种用于过程数据压缩的矩形波串法及其性能分析

A Boxcar Method for Process Data Compression and its Performance Analysis

低频矩形波励磁电磁流量计设计

Design of Low Frequency Rectangle Wave Excitation Electromagnetic Flow Meter

矩形波冲击时瓦楞纸板衬垫破损边界曲线的研究

Study on Damage Boundary Curve of Corrugated Board Cushioning Under Rectangular Pulse

矩形波交流原油脱水电源的优化设计

Optimization Design of Crude Oil Dehydration Power Supply with Alternating Rectangular Wave

本文推导了矩形波进料的固定床色谱的数学模型的解析解。

A analytical solution of mathematical model of fixed-bed chromatography is presented .

基于温补晶振的高稳定度超低频矩形波发生器

Ultra-low Frequency Rectangle Wave Signal Generator with High Stability Based on TCXO

矩形波脉冲交流电源的控制系统设计与分析

Design and Analysis of Control System for a Rectangular Pulse AC Power Supply

矩形波冲击下瓦楞纸板缓冲包装衬垫的冲击响应

The Response of Corrugated Paper Board under Rectangle Pulse

单缝衍射与矩形波频谱的联系

The relations between single - slit diffraction and square - wave frequency spectrum