Now the novel linear motor of bidirectional pulse variable-frequency control is applied to drive the flow control pump successfully.
目前，设计的双向脉冲变频控制的直线电机已成功应用于计量泵的驱动器中。
As the mine hoist on the speed of addition and subtraction accuracy and speed requirements of high precision, variable-frequency control system must be used.
由于矿井提升机对转速精度及加减速度要求较高，必须采用高精度变频调速系统。
In the light of the pickup current of a submersible electric pump being too large when started at full pressure, a new variable frequency control system is developed.
针对电动潜油泵工频全压启动时存在启动电流过大等诸多问题，开发出新型电动潜油泵变频控制系统。
It also gives energy consumption analysis caused by the variable frequency control method.
对变频控制进行了能耗分析。
In the field of ac machines control, a strategy called variable frequency control is mostly used.
在交流调速领域中，应用最广的是变频调速技术。
The hydraulic circuit of the whole vehicle is designed by using the variable frequency control mode.
采用变频阀控复合调速方式，设计了整车液压回路。
Based on the above study, the author of this paper designed variable frequency control speed system in electric twin-pod propulsion.
基于以上各部分，作者设计出双吊舱变频调速试验系统。
ZVS conditions (developed in the paper) lead to an interesting way to control the converter, and a discrete variable frequency control is proposed.
ZVS工作条件产生了有利的变流器控制方法，并提出了一种离散变频控制方法。
Adopt variable frequency control, stepless speed regulation, the roller tilt Angle can be adjusted.
采用变频控制，无极调速，滚筒倾斜角可调节。
The invention relates to a variable frequency control method of an AC transducer.
本发明涉及一种交流变频器的变频控制方法。
Host fan with variable frequency control, steady speed, low power, accurate and reliable.
主机风机采用变频控制，调速平稳、省电、准确可靠。
Host fan with variable frequency control, steady speed, low power, accurate and reliable.
主机风机采用变频控制，调速平稳、省电、准确可靠。
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