公开(公告)号：US20060220599A1

公开(公告)日：2006-10-05

申请号：US11098050

申请日：2005-04-04

申请人： David Siegler ,  Thomas Gilmore ,  William Straw

发明人： David Siegler ,  Thomas Gilmore ,  William Straw

IPC分类号： H02P7/00

CPC分类号： B23K20/106 ,  B29C65/06 ,  B29C65/0618 ,  B29C66/1122 ,  B29C66/45 ,  B29C66/71 ,  B29C66/7392 ,  B29C66/8242 ,  B29C66/8322 ,  B29C66/9512 ,  H02P25/032

摘要： A drive unit for use with a vibration welder having first and second electromagnets, each having first and second terminals, and being operable to reciprocate a vibration platen, includes phase U, V, and W drive circuitry and control circuitry. The phase U drive circuitry is coupled to the first terminal of the first electromagnet. The phase V drive circuitry is coupled to the first terminal of the second electromagnet. The phase W drive circuitry is coupled to the second terminals of the first and second electromagnets. The control circuitry is operable to control the phase U, V, and W drive circuitry to generate a first drive signal for energizing the first electromagnet and a second drive signal for energizing the second electromagnet.