STEPPING MOTOR CONTROL DEVICE, COMPONENT MOUNTING MACHINE PROVIDED WITH STEPPING MOTOR CONTROL DEVICE, AND STEPPING MOTOR CONTROL METHOD

摘要

A stepping motor control device is provided with a stopping position determination section and a drive control section. The stopping position determination section determines whether a mover stopping position during the holding state is a stabilized phase or a semistable phase. When it is determined that the mover stopping position is a semistable phase during the holding state by the stopping position determination section, and the control state of the stepping motor transitions from the holding state to the standby state in which the holding of the mover is released due to a trigger signal from a device or the holding state persisting for a fixed time, the drive control section changes the mover stopping position to one of the stabilized phases adjacent to the mover stopping position during the holding state.

主权项

1. A stepping motor control device which controls a stepping motor using half-step driving or micro-step driving, comprising:
a stopping position determination section which, when positions corresponding to stator magnetic poles are set to stabilized phases and intermediate positions between the stabilized phases which are adjacent are set to semistable phases among mover stopping positions of the stepping motor, determines which of the stabilized phases and semistable phases the mover stopping position is during a holding state in which the mover reaches an instructed target position and is held at the target position; and a drive control section which, when it is determined that the mover stopping position is the semistable phase during the holding state by the stopping position determination section, and the control state of the stepping motor transitions from the holding state to a standby state in which holding of the mover is released due to a trigger signal from a device or the holding state persisting for a fixed time, changes the mover stopping position to one of the stabilized phases adjacent to the mover stopping position during the holding state.