分析了非正弦周期电压作用下的RC串联电路（线性、非时变电路），得到了暂态响应分量和稳态响应分量。
The RC series circuit (linear time - invariant circuit)excited by the non - sine periodic voltage is analysed, both the transient response and the steady - state response of this circuit are obtained.
以氮气滑动弧为例，分析了其在一个周期内电弧电压、电流、电阻和功率的变化特性。
The arc voltage, current, power and resistance of a nitrogen gliding arc in one period were studied.
在测量电流之前，施加一定时间周期的测试电压。
The test voltage is applied for a specified period of time before the resulting current is measured.
该方法通过实时检测三相交流输出电流方向得到方向函数，利用该函数选择一个PWM周期内不同电压矢量作用时间来控制中点电流的方向，实现电压平衡。
By getting the direction function from the output AC current, the applied time of voltage vectors in one PWM period was chosen, the direction of central current was controlled for DC voltage balance.
通过键盘可设置：功率、测试时长、记录周期、电压下限、电压上限、导线内阻、操作模式、日期、时间等参数。
Power, test time, record period, voltage lower limit, voltage upper limit, lead internal resistance, operation model, data and time parameter can be set with keyboard.
偏置电压的大小、门脉冲宽度和周期的选择对后脉冲的消除起着关键的作用。
How to choose the bias voltage, the width and the period of the gated pulse is very important.
该信号发生器输出电压的周期很精确且装定十分方便。
The period of output voltage of it is very accurate and easy toadjest.
在常规直接转矩控制系统中，每一采样周期中只施加一个电压空间矢量。
Only one space voltage vector is applied in each sampling period in the implementation of the conventional PMSM DTC system.
单片机对焊接电流、电弧电压、电流给定、脉冲周期、占空比、基值电流、收弧电流衰减时间、前气和后气时间等焊接参数进行采样、计算和控制。
The welding current, arc voltage, preset current, the period and ratio of pulse, base current, down slope time, gas pre and post flow time are sampled, calculated and controlled by microprocessor.
设计了一种基于长周期光纤光栅的电压传感系统。
A kind of fiber voltage sensing system based on long period fiber grating is designed.
该方法将实际输出电压和期望输出电压的比较偏差作为负反馈加到下一个采样周期的开关调制函数矩阵中。
The discrepancy between the actual output voltage and expected output voltage of the matrix converter is calculated and added to the switch modulation matrix in the next sampling period as feedback.
该方法能有效控制铁磁谐振过电压从混沌状态转移到期望的周期轨道，实现系统状态在混沌和有序之间的转换。
The proposed method can effectively control the ferroresonance over voltage from the chaos to period orbit and implement the transformation of system status between chaotic and ordered situation.
其在电压与频率的同步测量、双积分整周期测量交流信号电压平均值等问题都提出了一些有创意的解决方法。
There are some inventive attempts to measure voltage and frequence synchronously and obtain average alternate voltage through dual-slope convenor in the integral times of input signal period.
二是心率处理电路：选用电压比较器提取一个心电周期中的R波，检测上升沿个数以记录心率。
The second one is the circuit which deals with the heart rate, it selects th voltage comparator to collect the QRS wave in one cycle, and detect the rising edge to record the heart rate.
对于任意周期性电压与电流信号的单相电路，提出一种新的电流分解方法。
A new method of current decomposition is proposed for single-phase circuit with periodical voltage and current.
在一个调制周期内，可预先求出几个死区电压矢量的合成矢量，用控制软件的方法实现对参考空间电压矢量的校正，从而消除死区效应。
During a modulation period, several dead voltage vectors were synthesized. Using the control software, the reference voltage space vector could be corrected. Thus the dead-time effect was eliminated.
在双电压合成矩阵变换器中，需要将每个周期内的输入、输出电压划分成若干扇区。
The input and output voltages in matrix converter based on two voltage synthesis are supposed to be divided into some sectors in each period.
PLC采样发电机的剩磁电压，通过软件编程测取剩磁电压的周期，来获得原动机的点火转速信号。
PLC samples the remanence voltage of generator and measures its period with software to get the signal of fire speed.
在运动涡旋相，电压的轨迹相对时间是周期性的，其振动频率与电流密度成正比。
In the moving vortex lattice phase the time dependent voltage is periodic with time, and the frequency of voltage is proportional to the current density.
由于采样时刻的电压和磁链误差，可在下一个控制周期内得到补偿，因此转矩和磁链的误差始终很小，二者的脉动很小。
The voltage and flux errors at the sampling instant can then be compensated for in the next control period, so the errors are always kept small, which leads to small fluxes and torque ripple.
只需检测两相电源电流和直流侧电容电压，通过简单计算就可直接求出每个开关周期内各开关的占空比。
The duty ratios of switches in each switching cycle can be directly obtained by simple calculation using two phases source currents and dc bus capacitor voltage.
控制电路包含电压开环控制电路，半周期电流滞环控制电路。
A control circuit comprises a voltage open-loop control circuit and a semi-periodic current hysteresis-loop control circuit.
该方法以电网电压为同步信号，在电网电压信号的过零点采样直流侧电容电压，并通过周期离散控制可以获得负荷电流有功分量。
The new control way can realize linear control for DC-bus voltage and get the fundamental component of the load current synchronously with a little of calculation.
为了克服逆变电源因带整流性负载而引起的输出电压波形周期性畸变，本文选取重复控制技术为研究对象。
Most research is concentrated on repetitive control technique in this paper for the sake of overcoming the repetitive distortion when inverter induced by rectifier-type nonlinear loads.
写入驱动器在预定周期期间，使用具有电平高于正常驱动电压的过驱动电压驱动第二局部线。
The writing driver drives the second local lines using an over-driving voltage having a higher level than that of the normal-driving voltage during a predetermined period.
由于我国使用的电压、频率规格不同，这些产品只能从国外购进，价格之高，供货周期长可想而知。
Because power supply's voltage and frequency in China are different from aircraft's, the above products would only be bought from abroad if there were not aircraft power converter.
电流模式控制架构，方便易于补偿设计，并确保快速响应的电压和负载瞬态逐周期电流限制。
The current-mode control architecture facilitates easy compensation design and ensures cycle-by-cycle current limit with fast response to line and load transients.
智能型真有效值电压监测仪，采用AT89C52单片机，在一个周期内对电网电压等间距采样N次。
Singlechip AT89C52 was adopted by intelligent real available value voltage-monitoring apparatus to sample N times for the electrical network voltage between equal spaces in one cycle.
智能型真有效值电压监测仪，采用AT89C52单片机，在一个周期内对电网电压等间距采样N次。
Singlechip AT89C52 was adopted by intelligent real available value voltage-monitoring apparatus to sample N times for the electrical network voltage between equal spaces in one cycle.
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