drag loading การใช้

• The major portion of the loading on an open frame structure consists of the drag loading .
• On the research and development platform based om digital signal processor tms320f240 , the paper made experiment of the , control system with 2 . 2kw induction motor . the result proved that the system has better capabilities of draging load , vary ing frequency and calculating speed
• The factors which affect load frequency characteristics are dissected in this thesis . frequency characteristics of constant revolution controlled load 、 synchronous motor dragged load 、 asynchronous motor dragged load and their effect to dynamic frequency characteristics are analysed . conclusion is reached as : increasing the efficiency of asynchronous motor can recede its slip and improve dynamic frequency characteristics