公开(公告)号：US20130015788A1

公开(公告)日：2013-01-17

申请号：US13625917

申请日：2012-09-25

申请人： KEVIN A. MILLER ,  ARI LUMBANTOBING ,  MEINDERT LAMBERTUS NORG

发明人： KEVIN A. MILLER ,  ARI LUMBANTOBING ,  MEINDERT LAMBERTUS NORG

IPC分类号： H02P31/00

CPC分类号： A61C17/221 ,  A61C17/34

摘要： An adaptive system for a personal care appliance, such as a power toothbrush, having a workpiece which is driven through an amplitude of motion by a drive mechanism which includes a stator member includes a circuit (13) for measuring average electrical current through the stator member and stored information (19) in the personal care appliance which relates the average current values through the stator during operation of the device to corresponding amplitude of motion of the workpiece. A processor (17) utilizing a stored program adjusts the operating frequency to produce a stator current value which correlates to the desired amplitude of motion of the workpiece.