Based on vector control theory, a fully digital variable speed system is designed.
基于矢量控制理论设计了一套全数字变频调速系统。
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。
Based on vector control theory, a full digital variable speed system is designed. The system structure and method for designing the software and hardware are introduced.
基于矢量控制理论设计了一套全数字变频调速系统，介绍了系统结构及软硬件设计方案。
The speed sensorless technique which can simply the hardware structure of the variable speed system and reduce the system cost is a very hotspot of current research works.
无速度传感器技术能够简化调速系统的硬件结构，降低系统的成本，是近年来交流调速领域的研究热点。
Based on the rotor flux vector control as a kind of variable speed system control method, with very good dynamic and static performance, received extensive attention.
基于转子磁链定向矢量控制作为交流调速系统中的一种的控制方法，以非常优良的动态和静态性能，受到了广泛的关注。
LI Mingjie. Research and Design of HMT Variable speed System in High-speed Transplanter [d]. Hangzhou: Zhejiang Sci-tech University, 2013.
[3]李明杰。高速插秧机h MT变速系统的研究与设计[d]。杭州：浙江理工大学，2013。
A simple brushless motor variable-speed system without position sensors is designed, it is based on MCS-80C196KB and frequency raising-lowering control is realized.
本文设计了一个不使用位置传感器的无换向器电动机调速系统，采用MCS- 8单片机，实现了无换向器电动机的升降频控制。
The parallel inverter was used to explain the capacity of variable-speed system.
为了增大调速系统容量，采用了逆变器并联的方式。
The parallel inverter was used to explain the capacity of variable-speed system.
为了增大调速系统容量，采用了逆变器并联的方式。
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