The paper introduces the VVVF control method for single phase capacitor motor.
介绍单相电容电机变频调速的控制方法。
In this paper, MODBUS bus in VVVF control system applied constant pressure in the water supply system was discussed.
本文对MODBUS总线在变频调速控制系统在应用于恒压供水系统进行了探讨。
Customer can choose VVVF control to control running speed, the energy saving performance is obvious. It can prolong product life and reduce the operation cost.
可选用变频驱动控制，根据客人流量自动控制运行速度，节能效果显著，提高设备的运行寿命，降低运行成本。
With the increasing application of VVVF technology and constantly improving applied level, the accuracy requirement of VVVF control system is getting higher and higher.
随着变频调速技术的应用日益广泛，应用水平的不断提高，对变频调速控制系统的精度要求也同样的越来越高。
The fuzzy controllers were used to replace PID torque adjustor and PID flux adjustor of VVVF vector control system.
用模糊控制器代替VVVF矢量控制系统的PID转矩调节器和PID磁链调节器。
The paper introduces the composition, principle and dynamical performances of the closed loop VVVF system using magneto electric pulse tacho apparatus to constitute the slip frequency control.
介绍采用磁电脉冲测速构成转差频率控制的闭环变频调速系统的组成、原理及动态性能。
It USES PLC to process the logic control and USES VVVF to adjust the water pressure.
它采用PLC进行逻辑控制，采用变频器进行压力调节。
The closed - loop control of voltage and current differential has being used to depress the current oscillation, and this provides some reference for designing and manufacturing VVVF products.
采用电压和电流微分闭环控制，能有效地抑制电流振荡，为VVVF设计和制造提供了参考。
Process control requirements of the position or speed low voltage motors using VVVF, the brake.
工艺流程要求调速或定位控制的低压电机采用变频调速，制动。
This thesis mainly introduced a new digital signal processor TMS320LF2407A specially used in the asynchronous motor control and its applications in the VVVF system.
本文主要研究了一种专门用于交流异步电机控制的数字信号处理器TMS320 LF 2407a，以及它在现代变频调速系统中的应用。
A constant pressure water supply system was introduced to which used PLC to process the logic control and employed VVVF to adjust water pressure.
介绍了恒压供水系统，采用PLC进行逻辑控制，采用变频器进行压力调节。
This paper gave a new design for water feeding system, the system was based on VVVF motor driver. PLC and PID closed loop control.
本文介绍一种最新的供水系统设计，以变频调速技术、可编程控制器技术及PID调节器技术为基础，构成以压力为控制对象的闭环控制系统。
The variable voltage variable frequency(VVVF) control of 3-phase induction motor for driving trolleybuses is expounded.
介绍无轨电车采用变压变频控制的三相感应电动机驱动技术。
In this paper, the control principle of VVVF Providing-water system is introduced, mainly introduces structural properties of PLC control system, and the design method of hardware and software.
本文介绍了变频调速供水系统的原理，重点介绍了PLC控制系统的结构特点及系统硬件和软件设计方法。
The methods discussed cover all speed control schemes, including VVVF, direct or indirect vector control, direct torque control and soft start.
所收录的方法涵盖异步电机调速的各种方式，包括VVVF、直接或间接矢量控制、直接转矩控制，甚至软启动。
The advanced technology of autoimmunization and VVVF driving system in both inland and abroad are applied, the electric control system is in the highest flight of our country.
其电气控制系统较多的应用了国内外先进的工业自动化控制技术和变频调速传动技术，电气控制系统在国内属于领先水平。
According to the control strategy of ac motors, the two control means put forward to be applicable to electric vehicle about VVVF and space vector.
依据交流电机的控制策略，提出了适用于电动汽车交流电动机控制的变频变压调速和矢量控制两种控制的实现方法。
By use of VVVF technology to directly control elevator door operation simplified the mechanical structure of elevator door device with low noise in door closing and leveling in exact position.
采用VVVF技术对电梯开门机直接拖动，使电梯门机装置机械结构简化，关闭时噪声低，且可靠到位。
By use of VVVF technology to directly control elevator door operation simplified the mechanical structure of elevator door device with low noise in door closing and leveling in exact position.
采用VVVF技术对电梯开门机直接拖动，使电梯门机装置机械结构简化，关闭时噪声低，且可靠到位。
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