Fuzzy control tests of arc voltage and short-circuit frequency are conducted to improve welding quality.
采用模糊控制技术，实现了电弧电压或短路频率的控制，提高了焊接质量。
Using computer control, man-machine dialogue mode, the completion of the power frequency voltage breakdown of insulation media, power frequency withstand voltage test.
采用计算机控制，过人机对话方式，完成对、绝缘介质的工频电压击穿，工频耐压试验。
The design of the emergency control equipment for frequency and voltage based on digital signal processor (DSP) is presented with the hardware build and the software frame mainly discussed.
介绍了一种基于数字信号处理器(dsp)的频率电压紧急控制装置的设计方案，重点阐述了系统的硬件搭建和软件框架。
Taking MIG welding as example, under each control modes, the welding parameters such as the welding current, welding voltage, pulse frequency, etc.
以铝合金MIG焊为例，在每种脉冲模式下，分别改善焊接电流、焊接电压、脉冲频率、占空比等参数进行焊接并采集输出电流波形。
It is suitable for control weak voltage current signal in the frequency converter control loop.
主要用于变频器控制回路中微弱电压、电流信号的控制。
Some factors affecting the frequency and magnitude of power supply, such as supply voltage, duty of control signal, the resistance and capacitance of oscillation circuit are discussed.
讨论了一些影响放电电压大小及频率的电源参数，如供电电压、控制信号占空比、振荡电路的电阻和电容等。
A frequency control method for RSC converters was achieved based on the output voltage expression.
基于输出电压表达式，还提出谐振开关电容变换器的频率控制方案。
Some parameters affecting the frequency and magnitude of power supply, such as supply voltage, duty of control sigal. the R and C of oscillation circuit are discussed.
对影响放电电压大小及频率的电源参数进行了讨论，如供电电压、控制信号占空比、振荡电路的R和C等。
The method of single asynchronous generator's frequency and voltage control is fit to synchronous station absolutely, offering technical support to the development of the distributed generation.
孤立运行异步发电站的频率和电压控制方法必然可以在孤立运行的同步发电站中应用，为分散能源的开发提供技术支持。
When the variation of bus-bar voltage and frequency occurs, the reliability of electric motors, transformers, control and protection system is analyzed in this thesis.
当电网电压和频率的变化时，分析了电动机、变压器、控制及保护系统、照明系统、通信导航设备等受电器工作的可靠性。
Setting open-circuit frequency and voltage algorithm for steady-state control power flow .
稳态控制潮流的设定空载频率及空载电压算法。
Frequency spectrum analysis and the crossing point of voltage are adopted to control the corresponding filter branch switch.
采用了频谱分析法和电压过零点控制相应的滤波支路投入运行。
To maintain both the voltage and the frequency within limits requires fine power control and load regulation.
既要保持电压而在限制范围内的频率，需要良好的功率控制和负载调节。
The online variable step can also regulate the voltage convergence rate, and the phase-locked control circuit is designed to synchronously trace frequency and phase of power grid automatically.
在线调节步长改变电压收敛速度，设计锁相控制电路，自动同步跟踪电网频率和相位。
In this paper a novel hysteresis current control method based on quasi optimized space voltage vectors for Active Power Filters (APF) with constant switching frequency is proposed.
提出了一种基于优化电压矢量的有源滤波器定频滞环电流控制新方法。
With fixed frequency control circuit, it provides with over voltage, over current, overheat and short circuit protection.
该系列电源适配器，采用固定频率控制电路，具备限流、限压、过温、短路全功能保护。
A kind of medium voltage AC variable frequency control system, which consists of voltage source inverter, sinuous filter and stepup transformer with variable frequency, is introduced.
介绍一种采用低压电压型变频器、正弦波滤波器和变频升压变压器构成的低-高式中压变频控制系统。
The adopted control mode of previous common frequency converter is usually of open loop constant voltage ratio, which its control curve is not stable.
早期通用变频器大多为开环恒压比的控制方式，控制曲线不稳定。
Two major control algorithms, fuzzy control algorithm of frequency and voltage and prediction control algorithm for switch-on, are analyzed in detail.
重点分析了准同期并列过程中涉及的主要控制算法：模糊调频、调压控制算法和合闸控制预测算法。
By adjustment to control signal, systems might realize variable voltage, variable frequency, steady voltage, steady frequency closed loop control.
通过对控制信号的调整，系统可实现变压、变频、稳压、稳频的闭环控制。
To get constant voltage and constant frequency energy that users need, the software and hardware of the inverter control system is designed.
由于永磁直驱风力发电系统所发出的电能为电压和频率的交流电，为得到恒压恒频的电能，本文进行了逆变控制系统的软硬件设计。
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。
Frequency control is in reducing the output frequency at the same time the output voltage has been reduced accordingly, the output voltage proportional to torque.
变频调速控制是在降低输出频率的同时输出电压也相应降低，转矩正比输出电压。
The chip of TL494 functions very strong, and its operation frequency is high. The double closed loop control of output voltage and current is realized by integrating some simple hardware circuit.
TL 494芯片功能强，工作频率高，通过外扩简单的硬件电路即可实现输出电压电流的双闭环控制。
Starting from a new aspect, it explained a new way to realize energy saving without retrofitting DCS and control logic at site in the application of high voltage frequency conversion.
从全新的角度，诠释了高压变频在系统应用中不对DCS和现场控制逻辑改造，即可实现节能应用的一种新方法。
The system bandwidth of conventional voltage-control-mode motor driver circuits is limited by the intrinsic frequency of the load, and its phase lag is also load-dependent.
传统电压控制模式的电机驱动电路系统频率都受电机的本征频率制约，其相位延迟会随负载的变化而变化。
For this project ABB Italy and ABB South Korea will supply low voltage switchgear, intelligent motor control units and variable frequency drives.
ABB意大利公司和ABB韩国公司将为这个项目提供低压开关柜，智能电机控制单元，以及变频器。
The design of a novel high frequency fluorescent lamp IC, on which low voltage control circuit and high voltage power device encapsulated in one chip, is introduced.
本文介绍了一种高频荧光灯镇流器芯片的设计，在芯片的实现上充分体现了低压控制电路与高压功率器件在单一芯片上的兼容性。
A method to implement sensorless control of Surface Mounted PMSM based on fluctuating high frequency voltage signal injection was introduced.
本文介绍了一种基于脉动高频电压信号注入法实现面装式永磁同步电机无传感器控制的方法。
A method to implement sensorless control of Surface Mounted PMSM based on fluctuating high frequency voltage signal injection was introduced.
本文介绍了一种基于脉动高频电压信号注入法实现面装式永磁同步电机无传感器控制的方法。
应用推荐