The problems are:the storage of cumulating variable at power off, multi-byte division, the detection of rotating speed and the control of facilities by AC power.
这几个问题是：累积量的掉电存储问题、多字节除法问题、转速的检测问题和交流电设备的控制问题。
DSP-based variable frequency AC motor speed control system, he is more use of the procedure.
基于DSP的交流电动机变频调速控制系统，他是比较使用的程序。
Being a simple and reliable speed control system for AC inductive motors, the device features better performance than AC variable voltage speed control system does.
本装置的性能优于交流调压调速系统，是一种简单而可靠的交流绕线式电动机转速控制系统。
From point of view of electric-energy control, AC excited generation system for wind-energy with variable-speed and constant-frequency includes AC excited generator, AC exciter and the control system.
交流励磁变速恒频风力发电系统从电能控制的角度来看，它包括交流励磁发电机、交流励磁器和发电控制系统。
The result of analysis and experiment show that the proposed method can be applied in the AC variable frequency speed control system which is nonlinear, fast changefully and difficult to be modeled.
理论分析与实验的结果表明：该方法对异步电机变频调速这一非线性、快速多变、难于建模复杂系统的控制是实用和有效的。
We discuss mainly some kinds of typical control methods of modern AC variable speed and their application in Marine electric propulsion.
综述了现代交流调速技术的几种典型控制方式在船舶电力推进中的应用。
Based on the new ANN (artificial neural network) inverse system control method, the AC variable frequency speed control system is analyzed and experimented.
本文运用神经网络逆系统这一新的控制策略，对异步电机变频调速系统进行可逆分析与控制试验。
In the field of modern power driving, the adjustable speed control of AC asynchronous motor by inverter is a hot spot because of its notable energy saving function and continuous variable speed.
现代电力传动领域中，交流异步电机变频调速具有显著的节能效果，并且可以实现无级调速，已成为当前电力传动领域研究的热点之一。
The performance of AC variable speed drive system has been improved greatly since field-oriented control is applied.
矢量控制使交流调速系统的性能产生了质的飞跃。
A brief introduction of the variable frequency AC motor speed control features, pointed out that the centrifugal pump inverter transformation of the economy.
简单介绍了交流电动机的变频调速特点，指出采用变频器改造离心式水泵的经济性。
Variable AC drive with independent digital R. P. M. readout for pumps offers precise control of AC motor speed, easily to set and maintain application speed tailored to line speed.
交流变频调马达，数码式泵转速(rpm)显示功能，便于精确控制马转速，易于设定和保持与生产线速同步转速！
Variable AC drive with independent digital R. P. M. readout for pumps offers precise control of AC motor speed, easily to set and maintain application speed tailored to line speed.
交流变频调马达，数码式泵转速(rpm)显示功能，便于精确控制马转速，易于设定和保持与生产线速同步转速！
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