1·The variable frequency variable speed system of three-phase asynchronous motor based on DSP has been researched in this paper.
本文研究一种基于数字信号处理器（DSP）的三相异步电动机变频调速系统。
2·The using of the automatic optimization and frequency variable technology can realize efficiency in circulated water of the power plant.
利用自动优化控制和变频调速技术实现火电厂循环水泵安全节能高效控制。
3·This paper introduces a frequency variable control system for elevator driven by linear induction motor, and this elevator has been tested.
设计了一套圆筒形直线感应电动机驱动的电梯全数字变频控制系统，对其进行了试验。
4·This paper introduces a frequency variable and velocity variable system using IPM. Some problems which should be noticed in applications are presented.
介绍一种应用智能功率模块的变频调速系统，提出了使用智能功率模块时应注意的关问题。
5·The paper presents a SPWM frequency variable and velocity variable system with SCR as main switching devices. The proposed scheme has been verified through experiment.
介绍一种以SCR作主开关器件的SPWM控制方式的变频调速系统，并通过实验对提出的方案进行了验证。
6·And using the frequency variable adjusting speed technique to control the speed of benzole cooling pump automatically, to achieve the temperature stability of the benzole.
同时利用变频调速自动控制粗苯冷却泵的转速，实现粗苯温度的稳定。
7·The signal power supply that this thesis proposed is a frequency variable power source used in test field. This thesis concentrates on analysis and designing the nuclear part: Inverter.
本文的信号电源就是变频电源在测试领域的应用，本文就信号电源的核心逆变器部分做了详细的分析和设计。
8·It can enhance the response speed of system to apply frequency variable adjusting speed technique, it is able to guarantee the optimization requirement of air-fuel ratio more satisfactory.
采用变频调速技术可以提高系统的响应速度，能比较满意地保证空(气)燃(料)比的优化需要。
9·The shortcomings of the protection itself is pointed out through analysis of examples and discussion on these two methods for microcomputer based power frequency variable distance protection.
从微机工频变化量距离保护两种试验方法和试验结果之间的矛盾入手，在分析其原理的基础上，以实例分析和讨论这两种方法，指出了保护本身的不足之处。
10·The topic of Energy saving on motor system has always being researched by scholars, and the variable frequency variable speed technology has been paid the focus attention among the researches.
电机节能问题一直是广大学者研究的热点，在电机节能技术中最受瞩目的是变频调速技术。