| 1. | Clinical research on the correlation between tcm syndrome and vwf , txb2 and 6 - keto - pgf1 in coronary artery disease 前列环素与冠心病中医证型相关性的临床研究 |
| 2. | Another function is to send the signal to the d / a board which converts the signal into real control electric current . this current control vwf which control the wind machine to create the wind 单片机把此16进制数化asc码送显示,再送给d a板,由d a板的数字电位器转化成真正的控制电流。 |
| 3. | The key of the implementation of the full digital speed - sensorless vwf system lies in how to obtain the speed calculation modek voltage vector decoupling modek speed adjuster model and how to obtain the pwm switch signal 全数字化无速度传感器变频调速系统实现的关键在于速度的推算模块、电压型矢量解藕模块、速度调节器模块的实现以及如何实时地得到pwm开关信号。 |
| 4. | The paper lucubrated the control theory of induction motor ' s vector transform and the method of calculating speed by induction motor ' s torque current weight , based on which , the paper designed a close - loop speed - sensorless vector control vwf system and realized the system in matlab / simulink 本文深入研究了感应电动机矢量变换的控制理论和利用电动机转矩电流分量进行速度推算的方法。在此基础上设计了一个闭环的无速度传感器矢量控制变频调速系统。 |
| 5. | In the last few years , the speed - sensorless vwf system of induation motor has become a new study hotspot and development trend . the paper primarily studied the design method and software of speed - sensorless vwf system of induction motor based on the digital signal processor ( dsp ) tms320f240 近几年来,感应电动机无速度传感器变频调速系统已成为新的研究热点和发展趋势。本文主要研究了基于数字信号处理器( dsp ) tms320f240的全数字化感应电动机无速度传感器变频调速系统的设计方法及软件实现。 |
| 6. | In the vwf system of induction motor , it is indispensable to need a speed - sensor in order to realize speed close - loop control . some matters that are brought by speed - sensor fixed and the system running condition usually become the system ' s a breakdown root and low the system ' s dependable , which is in contravention of people ' s original intention to use induction motor 在感应电动机变频调速系统中,为了实现转速的闭环控制,速度传感器是必不可少的,速度传感器的安装及其运行环境所带来的问题,往往成为系统的一种故障源,进而降低了系统的可靠性,这有悖于人们采用感应电动机的初衷。 |