现代运算放大器有某种方式的推挽式的输出级，许多也是不对称的，并且某一方向的压摆率有比其它方向的有更大的倾向。
While all modern op amps have push-pull OUTPUT stages of some sort, many are still asymmetrical, and have a greater slew rate in one direction than the other.
通过采用时变调制比的方法，可以消除不对称输入电压的影响，从而获得对称正弦输出电压或输入电流。
By using the time variant modulation ratio method, the harmonics can be eliminated and a sinusoidal and balanced output voltage or input current is obtained.
研究了对称组合系统的鲁棒输出调节问题。
The robust output regulator problem for symmetric composite systems was studied.
VB编程中，利用TAB函数和ABS函数的配合使用输出对称图形时，可以使程序简捷而且浅显易懂。
In the program of VB, the match usage makes use of TAB and ABS functions outputs the symmetry sketch, it can make program simple and plain to understand easily.
在功率输出级采用OCL互补对称功率放大电路，并对该功放电路增加电压负反馈，使得输出的正弦电压信号平滑而稳定。
At the power output, OCL complementally and symmetrical power amplifier is adapted. The output sine voltage becomes smooth and stable by adding voltage-negative-feedback to power amplifier.
为改善逆变器系统在严重不平衡负载情况下输出电压的对称性，文中提出一种新颖的控制策略——旋转坐标系下的PIR - P双环控制。
This paper presents a new method that PIR-P dual loop control based on rotating coordinates to improve the output voltage symmetry of inverter under the serious unbalanced load condition.
实验结果表明，采用微机软件实现脉冲移相控制，可有效地改善脉冲对称度，提高整流输出电压精度。
The experimental results show that the pulse shifting phase control by using software can improve effectively the pulse symmetry and the precision of the d. c. output voltage.
双活塞推动，齿条齿轮传动，结构紧凑，装配位置对称，动作迅速，通过简单的活塞颠倒可以改变输出轴转向。
Dual-piston driven. toothed bar and gear driven, structure is compact, position of assembly is symmetrical. Motion is swift. turning of output axis can be changed through simple reversal of piston.
本论文所论述的系统采用MSP430F149单片机通过不对称规则采样法来输出高精度的三相spwm波形，从而实现了逆变器的SPWM控制。
The system adopts MSP430F149 MCU and asymmetry regular-sampling strategy to output high precision SPWM wave, consequently transducer's SPWM control is realized.
它将输入叉指换能器激发的SAW中心对称分成两路并由各自的输出叉指换能器检测输出。
SAW excited by input interdigital transducer is divided centrosymmetrically into two paths detected by their output interdigital transducer.
针对一新型表面处理工艺，设计了一种符合工艺要求、可输出双向不对称脉冲的高压脉冲电源实现电路。
This paper introduces the design of high voltage low current pulse power supply with two polarities, which is used in a new type chemical surface disposal.
这时，输出正负电压始终对称，变化量相等。
In this case, the output voltage variations will be equal and opposite at the positive and negative outputs.
采用等效面积法产生的SPWM波形具有精度高、输出波形谐波小，对称性好等优点。
They also show that the SPWM waves generated by equiarea algorithm have advantages of high precision, small harmonic value of output waves and good symmetry.
在非对称输入电压情况下，对基于双空间矢量调制的矩阵变换器的输出电压波形进行了分析，提出了利用时变调制比改善输出电压波形的方法。
The output voltage waveforms of matrix converter which is based on the space vector modulation are analysed under the unbalanced input voltage. A time-variant modulation ratio method is proposed.
多维轴对称折叠-组合腔由一个或多个折叠腔和一个共轴球面腔组合而成，共用一个平凹输出镜产生并合光束。
Multidimensional axisymmetric folded-combined cavity which produces combined beams by a common output lens is made up with several folded cavities and a coaxal sphere cavity.
采用左右对称的输入输出耦合结构便于调整滤波器的传输零点，从而改善带外特性。
Tapped coupling can be used to change the transmission zeros so that the performance of filter is improved.
振为主要设计，并且设法改善了此架构输出不对称性的缺点。
LC tank, and manages to improve this structure the output not symmetry of fault.
注意：1掌握数据输入、输出基本语句；2掌握数据补零的编程要求；3掌握实信号频谱对称性原理。
Note: 1 master data input, output of basic statements 2 master data zeros programming requirements 3 grasp the real signal spectrum Symmetry Principle.
提出一种电网电压不对称情况下抑制三相脉宽调制(PWM)电流型变流器(CSC)直流输出电流二次谐波、减少网侧电流低次谐波的控制方法。
This paper presents a new control strategy to eliminate second harmonic of dc output current in the 3-phase unbalanced network voltage PWM current-source converters (CSC).
开发了变极性TIG焊电源的微机控制系统，通过调节输出电流的正负半波时间、幅值获得不对称方波。
The controlling system of the variable polarity power source for TIG welding by microprocessor-80C552 is developed with flexible setting time and scope of the DCEP and DCEN.
开发了变极性TIG焊电源的微机控制系统，通过调节输出电流的正负半波时间、幅值获得不对称方波。
The controlling system of the variable polarity power source for TIG welding by microprocessor-80C552 is developed with flexible setting time and scope of the DCEP and DCEN.
应用推荐