平均电压
- 网络average voltage;MPV Mid-Point Voltage
![平均电压](../cache/1193737.jpg)
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根据机械特性方程式提出SR电机两种基本调速方法,即调节相绕组的通电角和调节相绕组的平均电压。
And two basic methods for regulating motor speed are proposed based on this equation . That is to adjust the energizing angle and the average voltage of phase winding .
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微细电火花加工间隙平均电压检测方法理论研究
Research of gap average voltage measuring method in micro-EDM
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缺陷尖晶石型Li(1±x)Mn2O4中,随着Li成分的增加,晶胞参数逐渐增大,总能量和电池的平均电压逐渐减少,理论容量随着含锂量或Li/Mn摩尔比的增加而减少。
In addition , the theoretical capacity decreases with an increase in lithium content or the Li / Mn molar ratio .
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测量的QRS波时间比正常图形(<0.11ms)明显延长,R的平均电压除V1导联大于正常图形外其余导联均在正常范围内。
Except V_1 lead average amplitude of R wave is larger than normal figure , the others are in the normal range .
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当CP脉冲为高频时,各相绕组平均电压和平均电流随之增大,输出转矩相应增大,有效提高了步进电动机的高频运行特性;
When the frequency of CP pulses is high , average voltages and currents of windings will increase and output torque will enlarge accordingly . It effectively improve high frequency running property .
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当CP脉冲为低频时,各相绕组平均电压和平均电流较低,电动机磁场储能较少,一定程度上克服了共振现象。
When the frequency of CP pulses is lower , average voltages and currents of windings will decrease and magnetic field energy of motor is very little so as not to produce resonance .
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文章用平均电压的方法分析了SVPWM逆变器的死区效应以及死区效应对控制系统运行性能的影响,尤其是相电流的零电流箝位现象与相电压的畸变情况。
The dead-time effect on SVPWM inverters and the dead-time effect on the control system , especially , zero-current clamping phenomenon and the output voltage distortion were analyzed by means of the average value method .
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论降低铝电解槽平均电压的途径
The Ways of Lowering the Average Pressure in the Aluminium Electrolyzer
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高压静电除尘整流变压器及其输出空载直流平均电压飙升的浅析
Analysis of HV Electrostatic Precipitation Rectifier Transformer and Its Output No-Load DC Average Voltage Boost
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实验结果表明,本算法在达到良好的平面布图规划效果的同时,有效地降低芯片的平均电压降以及最大电压降。
Experiments show that good results can be obtained with average IR-drop and maximum IR-drop decreased dramatically .
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在电火花加工中,间隙平均电压是伺服控制的重要依据。
Average gap voltage is one of most important parameters of servo-control in Electro-Discharge Machining ( EDM ) .
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铝电解槽的电能消耗率同平均电压和电流效率两个因素有关。
The energy consumption rate of aluminum electrolytic bath is related with the average voltages and current efficiency .
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同时还显示了两个电极鞘层上的平均电压随着两个电极面积之比的变化关系,两个电极的面积之比越大,它们的平均鞘层电压之比也越大。
As increasing the rate of two electrode area , the rate of the time-average sheath voltages in two electrodes is increase .
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针对不同工况,本文分析了按火花率控制、按最高平均电压控制、按火花强度的二折线控制三种常用的控制方式。
During different conditions , the paper analyzes three common methods which are the spark rate control , the highest average voltage control and the spark intensity control .
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检测方法有很多,最常用的是间隙平均电压检测法和峰值电压检测法。
There are many methods of testing spark states of the gap , the method of testing the average or the peak value of voltage is used commonly .
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电火花加工的间隙平均电压是伺服控制的重要依据,是保证电火花加工稳定、高效的关键。
Average gap voltage is one of most important parameters of servo-control in Electro-Discharge Machining ( EDM ), and is the key to ensure stable and high speed machining .
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通过对准圆形轨迹上的零电压矢量的控制,改变逆变器的平均电压和平均频率。
By controlling the output of zero vectors on the side of the polygon , the mean voltage and the mean frequency of the inverter are varied as expected .
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针对三相/单相矩阵式变换器系统,提出一种平均电压脉宽调制方法,通过实时检测三相输入相电压,经过简单计算即可对输出进行正弦调制。
An average voltage modulation strategy is proposed for three-phase to single-phase matrix converter , which is used to realize sinusoidal output with three-phase input voltages detection and simple calculation .
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控制逆变器直流电容的平均电压与电压波动为适当值是保证并联型电力有源滤波器具有良好补偿性能的一个重要因素。
Controlling the DC capacitor average voltage and fluctuant voltage at an adequate value is an important factor which guarantees the excellent compensation characteristics of shunt active filter ( APF ) .
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板线匹配更合理。先进的板匹配,有效地提高了电场平均电压和板电晕电流密度,收尘效率更高。
Reasonable matching of wafer and wire : the advanced matching of wafer improves average voltage in electric field and current density of wafer corona , which the dedusting efficiency is higher .
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构建了锂离子电池体系中电极材料的晶体结构模型,应用第一性原理预测了电池的平均电压及正、负极材料的热力学性质,对于电池结构设计的优化及安全性能的提高具有非常重要的意义。
Based on established crystal structure model of electrode materials , average voltage of lithium ion battery and thermodynamic properties of the cathode and anode materials were predicted by using the first principles .
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该方法根据就地无功补偿原则,兼顾系统不同运行方式,将系统发生无功小扰动之后,平均电压偏离较大的负荷节点作为补偿地点。
Taking account of different operating conditions , the buses with big average voltage deviation are selected as compensation sites according to the principle of reactive power compensation on site after small disturbance occurs .
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针对微细电火花加工中脉冲宽度窄、频率高等特点,采用间隙平均电压法进行间隙状态的检测,采用统计的方法对间隙状态进行识别和判定。
To meet the narrow width of pulses and high frequency in micro-EDM , this paper employs the method of average-voltage to detect the spark states , and adopts statistical manner to identify determine the spark states .
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其中大电压概率密度和对飞溅率的影响最大,大电流概率密度和的影响次之;而平均电压和电压变异系数对飞溅率的影响相对来说较小。
Furthermore , the effects of the high voltage probability density are the biggest , the effects of high current probability density comes next , whereas the effects of average voltage and the coefficient of variation of voltage is relatively small .
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本文以整流电路为例,列举了几个不同的电路,详细地推导出计算有效电压、电流和有功功率,平均电压、电流及功率的正确表达式,并说明了他们的物理意义。
This text is to take commutate circuit as an example , enumerating a few different circuits , deducing an expression about valid voltage , valid current and efficacy power , average voltage , average current and power , their physics meaning is explained .
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设计了平均电压检测电路,将间隙的高频脉冲电压信号转换成平均电压信号,电压平均值经过单片机采样后传送到上位机中,上位机根据电压平均值判断间隙状态。
The average detection circuit was designed , it changed the high-frequency pulse voltage signal in the gap into a average voltage signal , this signal was transmit to the computer after sampling by the MCU , and the computer judge the gap state by the average voltage .
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其中,Cr2O3既具有较高的电化学活性,又具有较低的平均工作电压,因此是较适合的锂离子电池负极材料。
Thereinto , Cr_2O_3 is more fitting for its high electrochemical activity and low average working voltage .
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贮存时间越长,LiMn2O4的可逆容量损失越大,平均放电电压越低;
The longer the storage life , the greater the reversible special capacity loss of LiMn 2O 4 , and the lower the average voltage .
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该电池平均放电电压为3.9V,倍率充放电性能良好。
The average discharge voltage of the battery was about 3.9V . The rate discharge performance was satisfactory .
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样机瞬时点火功率小于1W,平均点火电压低于40V,理论推力约1.7mN。
The ignition instantaneous power required for each unit is less than 1 W , the mean ignition voltage is less than 40 V , and the theoretical thrust force is about 1.7 mN .