In order to control speed , the pulley needs to be continually spinning 為了控制速度,滑輪必須連續(xù)旋轉(zhuǎn)。
Minimum control speed 最低控制速度
Change electro - control speed regulating of skip lifter into numerical - control cascade control 箕斗提升機電控改造為數(shù)控串級調(diào)速
Study on locally filtering and leaching technology with control speed in lanbeikeng ionic rare - earth deposit 蘭貝坑離子型稀土礦就地控速淋浸技術(shù)研究
The paper gives the vector control speed system of the double - fed machine on the rotor current orientation 在進行定子磁場定向后,保持轉(zhuǎn)子電流與定子磁鏈相垂直,進行轉(zhuǎn)子電流定向。
Feature : the machine adopts magnetic clutch to control speed . so when it runs the speed is smooth . it can run automatically from feeding , curling , discharge , to stacking cups 特點:本機采用電磁離合器無級調(diào)速,速度平滑。杯子從送杯臺開始送杯,卷杯,出杯,到收杯臺,自動完成這一系列動作。
Compared with the traditional d - h transformation matrix algorithm , this method reduces the complex computation of inverse kinematic equations , which is very useful to improve the control speed of multi - joint robot 該方法與矩陣變換法相比能很大程度上減少運動方程逆解的計算量,對于提高關(guān)節(jié)的控制速度極為有利。
Deeply study the theory of vector control on pmsm and build the mathematical model of pmsm . based on the model , the sensorless pmsm vector control speed adjustment is discussed . the control block diagram is provided 論文深入研究了永磁同步電機的矢量控制理論,建立了永磁同步電機數(shù)學模型,并在此基礎(chǔ)上討論了永磁同步電機無位置傳感器矢量控制調(diào)速方案,給出系統(tǒng)控制框圖。
The test shows that the vector control speed system has low inverter power , high power factor , perfect dynamic performance , wide speed range . it suits the variable speed system of fan machine and pump and has good prospect on industry application 試驗證明調(diào)速系統(tǒng)具有變頻器功率小、功率因數(shù)高、動態(tài)性能好、調(diào)速范圍廣等優(yōu)點,適用于風機、泵類負載的調(diào)速,有良好的工業(yè)應(yīng)用前景。
However , the current method of estimating and controlling speed has one or more of these serious disadvantage : complicate structure , difficulty to realize or high dependency of the parameter of motor which will result in the inaccuracy if the motor runs for a long time 但是,目前所用的速度估算方法和控制方法,要么結(jié)構(gòu)復雜,實現(xiàn)困難,要么過多的依賴電機的參數(shù),對電機長時間運行的準確性造成不利影響。