公开(公告)号：US20240313677A1

公开(公告)日：2024-09-19

申请号：US18599769

申请日：2024-03-08

申请人： SEIKO WATCH KABUSHIKI KAISHA (trading as SEIKO WATCH CORPORATION)

发明人： Ryota OYOKAWA ,  Tomohiro IHASHI ,  Masayuki NAKAMURA

IPC分类号： H02P8/40 ,  G04C3/14

CPC分类号： H02P8/40 ,  G04C3/146

摘要： Provided is a stepping motor control device that prevents a terminal voltage of a battery from decreasing even when a plurality of motors are driven simultaneously at a high speed. The stepping motor control device includes: a control unit configured to control a driving unit that drives a plurality of motors including a first motor driven at a prescribed driving cycle, and a second motor driven at a driving cycle that is the same as or an integral multiple of the driving cycle of the first motor to drive the motors by outputting a driving pulse; and a storage unit configured to store a width of the first driving pulse and a width of the second driving pulse. When a sum of a pulse width of the first driving pulse and a pulse width of the second driving pulse is longer than the driving cycle of the first motor, in the driving cycle of the first motor, a part of the first driving pulse and at least a part of the second driving pulse are simultaneously output, and a pause period is provided, in which neither the first driving pulse nor the second driving pulse is output after the first driving pulse and the second driving pulse are output and before a start timing of a next driving cycle of the first motor.