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   周期电压 的翻译结果: 查询用时:0.016秒
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周期电压
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  periodic voltage
     Measuring the effective value of the non sinusoidal periodic voltage by transistor MV -meter
     用指针式晶体管毫伏表测非正弦周期电压有效值
短句来源
     The RC Series Circuit Excited by the Non - sine Periodic Voltage
     非正弦周期电压作用下的RC串联电路
短句来源
  “周期电压”译为未确定词的双语例句
     The Definition Theory and Mathematical Model of Reactive Power for Arbitrarily Periodical Voltage and Current Waveform
     基于任意周期电压电流的无功功率定义及其数学模型
短句来源
     The result shows: The maximum discharge energy(Pmax) of dielectric plate +γ—Al_2O_3 reactor largely relates with dielectric constant of dielectric plate, the disciplinarian is as follows:(1) Pmax(ε=8)> Pmax(ε=590) > Pmax(ε=3700) > Pmax(ε=14000).
     在周期电压作用下对我们所研究的介质板介电常数范围,有如下规律:(1)Pmax(ε=8)> Pmax(ε=590)> Pmax(ε=3700)> Pmax(ε=14000)。
短句来源
     The measured polarization conversion efficiencies from TE mode to TM mode and from TM mode to TE mode are 93 6% and 95 1%,respectively. The electrical voltage for a period of the polarization conversion is about 380V.The possibility and measures to improve the performance of the polarization converter are also discussed.
     所研制的偏振转换器 ,由 TE模到 TM模和由 TM模到 TE模的偏振模转换效率分别约为 93.6 %和 95 .1% ,偏振转换周期电压约为 380 V.并讨论了器件性能进一步提高的可能性与方法
短句来源
     The extinction ratio between the 45°- and -45°-tilted-polarization components of the linear-polarization output is larger than 25 dB.With the electro-optical effect generated by contact poling,the conversion-cycle voltage of the TE-TM mode balancer is about 230 V while the modulation-cycle voltage of the TE-TM phase-difference modulator is about 192 V.
     所测得的输出线偏振光中,45°与-45°斜角方向偏振分量的消光比大于25dB。 基于接触式电极化法所获得的电光特性,TE TM偏振模式均衡器部分的偏振转换周期电压约为230V,TE TM相位差调制器部分的调制特性曲线周期约为192V。
短句来源
     CHAOS IN THE ALMOST PERIODIC FORCING ELECTRICAL POWER SYSTEMS
     准周期电压扰动下电力系统中的浑沌现象
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  相似匹配句对
     The Accuracy Measurement for Extremum Voltage of Cyclic Signal
     周期信号极值电压的准确测量
短句来源
     power voltage supply;
     电网电压
短句来源
     THE BASIC REPEATING CYCLE OF THE OUTPUT VOLTAGE OF AC—TO—AC FREQUENCY CHANGERS
     交—交变频器输出电压的基本重复周期
短句来源
     A BRIEF DISCUSSION OF CYCLE
     周期浅析
短句来源
     voltage of work;
     工作电压
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  periodic voltage
Below the threshold field for impurity breakdown, Ge samples behave like damped nonlinear oscillators, exhibiting characteristic chaotic response when driven by a time-periodic voltage.
      
In this kind of sensors a periodic voltage is applied to the solid state electrochemical cell and the current response is measured.
      
A periodic voltage gradient of 2?VDC/cm in cycles of 5?days on and 2?days off was applied in all the tests.
      
During the following sustain part, a square-wave periodic voltage is applied to sustain electrodes of all cells in the panel.
      
For operation, a periodic voltage is applied between the stationary and moving combs.
      
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A new algorithm for the RMS estimation of nonsinusoidal periodic signals is proposed, where two times of compensations and the optimization of starting-point are used to enhance the accuracy of the algorithm, and there is no need to design synchronous sampling or to measure the period of a signal. The validity of the algorithm is proved by a simulation calculation.

提出了测量频率波动的非正弦周期电压电流真有效值的一种新方法,分析了该算法的理论误差,在此基础上提出了采用两次补偿和算法起始点寻优来提高算法精度的思想。仔细研究了算法的收敛性,得到了一些新的结论.为加快数据处理速度,提出了一种简便的隐式开方算法.仿真计算的结果完全验证了本文的结论.

A type 8801 measuring standard of ultra-low frequency signal's voltage and distortion is a sample calculating instrument in which the A/D convertor and microprocessor are used. It can measure ultra-low frequency signal's period, voltage, distortion and harmonic. The accuracy of measuring voltage is up to 0.02%. This paper introduces the instruments main specifications, technical descriptions, technical features, error analyses, and simple introduction of the software.

8801超低频电压及失真测试仪是一种采用单片计算机、A/D变换器的采样-计算式仪器,它可以测试超低频信号的周期、电压、失真和谐波等各种参数。电压测试不确定度高达0.02%。文中介绍了主要技术指标、工作原理、技术特点、误差分析等,对软件作了简要说明。

The paper investigates the application of TMS320C240 in generating a series of SPWM waveform signals online for variable frequency loop systems. Using the algorithm of subsection modulation, voltage frequency ratio as well as numeration of sine function, real time sampling cycle, voltage amplitude, and pulse width at different frequencies are achieved and the time values are put into the timers of the special event manager EV in TMS320C240. Then through timing interrupt the high low voltages are sent to the...

The paper investigates the application of TMS320C240 in generating a series of SPWM waveform signals online for variable frequency loop systems. Using the algorithm of subsection modulation, voltage frequency ratio as well as numeration of sine function, real time sampling cycle, voltage amplitude, and pulse width at different frequencies are achieved and the time values are put into the timers of the special event manager EV in TMS320C240. Then through timing interrupt the high low voltages are sent to the interface circuits to generate real time SPWM waves. A series of SPWM waveform signals where the voltage frequency ratio and frequency can be changed real time is then achieved. The harmonic of SPWM generated by TMS320C240 is decreased. The output is fast and of good symmetry compared with that of a singlechip. The precision attainable is at the order of 0 015 Hz in the range 0~400 Hz.

研究使用 TMS32 0 C2 4 0在线生成用于闭环变频调速的 SPWM波形。利用分段同步调制法、压频比算法以及对正弦函数值的拟和 ,实时计算不同频率下的采样周期、电压幅值及输出脉宽 ,并将这些时间计数值送入 TMS32 0 C2 4 0事件管理器 EV中的定时器 ,利用定时中断向接口电路送出相应的高低电平 ,实时产生 SPWM波形。产生可实现变化压频比、实时频率变换的 SPWM波形。与单片机产生的 SPWM波形相比 ,该 SPWM的输出速度快、谐波小、对称性好。频率范围为 0~ 4 0 0 Hz时 ,精度可达约 0 .0 15Hz。

 
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