| 摘要 |
<p>A flyer frame has a first AC motor 22 for obtaining a general rotational movement of various parts of the frame and a second AC motor 30 for obtaining only a variable component of the rotational movement of the bobbin 18. An inverter 68 is provided for operating the first and second AC motor. A controller 72 is divided into a general section 80 for operating the frame powered by AC power source, and a winding section 74 for obtaining a winding control of the frame. The winding control section 74 is operated by a DC current, which is usually supplied by an outside AC source. A DC output of the inverter 68 is connected to the winding section via a diode or relay, which usually disconnects the DC line to the winding section and which is closed upon the occurrence of the power failure, for supplying a regenerating current from the inverter 68 to the winding section. A desired winding control is thus maintained upon the occurrence of the power failure, until the stoppage of the frame, to prevent rovings at respective spinning positions from being broken. <IMAGE></p> |
