| 摘要 |
PROBLEM TO BE SOLVED: To eliminate stress to a player by reducing a starting-time constant at the time of starting driving of a stepping motor to increase inrush current with respect to current flowing through a stator coil to improve a driving torque higher than a prescribed value so as to smoothly start a belt. SOLUTION: In the case of performing driving control by the stepping motor 118 in a Palot(R) machine 300 applied with belt driving type varying parts 350A, 350B and 350C, a resistor 146 is interposed at the time of starting this stepping motor 118 to apply power voltage VM, thereby the inrush current is increased to improve the torque. This torque up eliminates a starting mistake resulting from the expansion ratio etc. of a belt 114, so that the belt driving type varying parts 350A, 350B and 350C can smoothly be driven. COPYRIGHT: (C)2004,JPO
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