The principle of the SCR adjusting voltage circuit and the starting model of soft starter are introduced. The voltage adjusting model SCR is used in this paper.
介绍了晶闸管调压电路的原理以及目前软起动器的起动方式,本文采用晶闸管调压方式。
The self-adaptable control of output voltage could be realized under certain range by adding a APFC in ultrasonic generator and adjusting voltage feedback network with digital potentiometers.
本文在超声发生器中加入功率因数校正电路(APFC),并利用单片机控制数字电位器实现了对电压反馈网络的调节,从而实现APFC输出电压在一定范围内的自适应控制。
It also introduces the working principle of the SCR adjusting voltage circuit and the starter's main circuit, the hardware structure and functions of the soft starter and the software program design.
阐述了晶闸管调压电路及软起动器主电路的工作原理、软起动器的硬件结构和功能以及软件设计。
Once you begin adjusting GTLREF voltages (for each core data and address bus) you will find that different bus frequencies respond differently to variations in the voltage.
一旦你开始调整GTL ref电压(单独针对每个核心数据和地址总线)你将会发现不同的总线频率需要不同的电压组合。
According as compare of voltage deviation and its variable ratio, optimal control of voltage and current is realized with querying fuzzy control sheet and adjusting adverse variable pulse width.
比较电压偏差及其变化率,查询模糊控制表,调节逆变脉宽,可实现电压及电流的理想控制。
This provides a means of adjusting the output voltage to a lower value.
这提供了一个输出电压调整到一个较低的值表示。
Tested by PSPICE simulation and small power experiment, the designing project "adjusting output voltage by changing on and off time of the SPWM" is practical.
经PSPICE软件仿真和小功率电路实验证明,“通过改变开关角而实现调节输出电压”的闭环设计方案是可行的。
Meanwhile, the voltage rise caused by resonance in course of adjusting is controlled by series damping resistance.
并且通过串联阻尼电阻以限制调节过程中谐振引起的电压升高。
Feedforward signal includes the information of both grid voltage and DC side load. Power balance between the input and output can be maintained by adjusting AC side currents.
前馈信号同时包含了电网电压和负载的信息,通过快速调节交流侧进线电流,使得系统功率平衡得以维持。
When we measure the electric machines with little steady voltage adjusting rate, the absolute error of the voltmeter reaches out of the range of the steady state voltage adjusting.
在测量一些稳态电压调整率非常小的电机时,会出现测量用电压表的最大绝对误差大于稳态电压调整的范围。
KIWA synthetic power saver with his unique structure form eliminates higher harmonic of the electrical network by way of the balance in adjusting three-phase current and voltage.
KIWA综合节电装置以其独特结构形式,通过调整三相电流和电压的平衡,消除电网高次谐波。
Based on the method of SVPWM, various forms of phase voltage waveforms are generated by adjusting the duty time of the two zero vectors and the duty order of every vector.
在空间电压矢量形成PWM波的基础上,通过两个零矢量作用时间的不同分配及调节各矢量作用顺序,形成了不同形式的相电压波形。
While adjusting, it can measure the system according to the voltage of sensor signal that the instrument shows.
标定时可根据仪表显示的传感器信号电压进行系统检测。
The wind power converter must possess abilities of Low voltage Ride through (LVRT), available operation with unbalanced voltage fault and adjusting active as well as reactive power.
风电变流器在国产化的过程中也必须要具有低电压穿越、不对称故障下运行的能力和动态无功、有功功率的调节能力。
The speed adjusting system with field weakening with voltage feedforward, current closed negative feedback and speed closed loop was designed by adopting digital signal processor (DSP).
采用数字信号处理器(DSP)控制器,设计了具有电压前馈和电流截止负反馈的转速闭环弱磁调速系统。
This integrated circuit control the frequency and pulse width of the high voltage IC output signal conveniently by adjusting the input date of IC digital input port.
该集成电路通过对数字输入端口的输入数据的调节,灵活的控制了高压开关集成电路输出信号的频率和脉宽。
The influences on the beam current are observed by adjusting arc voltage and gas injection at different cases.
在多种参数下,通过调节弧压、进气量等观察了其对弧流的影响。
The switch mode regulated power supply using self - adjusting technique is introduced. In TV transmitter, it is used to the large power transmit-ting tubes with variable voltage for cold filament.
介绍了一种采用自适应技术的开关型稳压电源,对电视发射机大功率发射管的冷态灯丝平滑上电压,有效提高了发射管的使用寿命。
The results show that after triggering discharge, the wall charges can be varied by adjusting the driving waveform, and the high wall voltage can be obtained.
数值模拟结果表明,在放电期间恰当地调整电极上的驱动电位,可以改变介质层表面电荷积累,获得较高的壁电压。
An automatic laser power control circuit comprises a laser diode package, a voltage adjusting unit and a polarity adjusting unit.
一种自动激光功率控制电路,包括:激光二极管封装件,电压调节单元和极性调节单元。
The motor speed can be controlled and regulated by adjusting the input voltage.
只要调整输入电压的大小,就可以使电机的转速得到调整和控制。
This paper describes how to apply best adjustment theory to fix the parameters in a temperature-voltage adjusting system.
论述了如何应用最佳调节理论在温度-电压串级调节系统中进行参数整定。
The bath temperature, liquidus and anode effect were controlled by adjusting the AlF3 additions, aluminum tapping magnitude, cell voltage set-point and the alumina feeding interval.
通过调整氟化铝添加量、出铝量和设定电压,以及氧化铝下料间隔的自修正,实现对电解槽温度、初晶温度、效应系数的控制。
The system has voltage auto-adjusting functions of optics focusing and CRT's focusing.
研究了设计参量和制作误差对其聚焦性能的影响。
A fuzzy controller for capacitor voltage at DC side is designed by using fuzzy control rule with self-adjusting factors.
采用带有自调整因子的模糊控制规则设计了有源滤波器直流侧电压的模糊控制器。
By adjusting the resistor to a higher value, it is possible to keep the SCR from firing until the ac voltage has reached its peak value in the positive direction.
通过调节电阻为较高的值,因此能够保持在SCR从击发直到AC电压达到其峰值的正方向。
By adjusting under voltage regulation loop, it achieves the function of providing stable 110v DC output.
通过电压闭环调节,实现了输出恒定110V直流电压的功能。
A method for improving the ability of JZXC 480 track circuit once adjusting was presented. The method is to in crease the ratio of release voltage and work voltage of track relay.
为提高JZXC - 480型轨道电路一次调整的能力,提出改变轨道继电器返还系数的方法,并进行计算机仿真计算。
A method for improving the ability of JZXC 480 track circuit once adjusting was presented. The method is to in crease the ratio of release voltage and work voltage of track relay.
为提高JZXC - 480型轨道电路一次调整的能力,提出改变轨道继电器返还系数的方法,并进行计算机仿真计算。
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