Optimum design of a long stroke variable torque pumping unit and simulation of its dynamic behaviors 扇形長沖程抽油機的優化設計與動力仿真
The paper research a predominant variable torque clutch ? hyperboloid clutch with rollers . the clutch makes convert mutually between force and torque reality to control transmission with special geometry relation and friction transmission . it is satisfy with the request of modern industry 本文所研究的是一種性能優越的可變扭矩加載器?雙曲面滾柱加載器,利用加載器接觸表面特殊幾何關系,通過接觸表面的摩擦傳動,實現軸向力與轉矩之間的相互轉換,從而達到控制制動和傳遞動力的目的,可滿足現代工業對加載裝置的要求。
Based on the torque - speed characteristic curve of induction motors , analyses were done on changes in slip with an variation in frequency when an induction motor drives different kinds of loads , including those with constant torque , constant - maximum torque , variable torque ( except fans and pumps ) and constant power , as well as fans and pumps , the formulas to calculate the slip and the speed under different frequencies and loads were presented 摘要以異步電動機機械特性曲線為基礎,分析了變頻調速異步電動機在拖動恒轉矩負載、恒最大轉矩負載、變轉矩(非風機和泵類)負載、恒功率負載以及風機和泵類負載時,轉差率隨頻率變化的規律。